NAVTA AVA practice questions

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Question 1Veterinary Medical Terminology and Anatomy

While reviewing a dog's physical examination notes, a veterinary assistant reads that a mass is located caudal to the scapula. In standard veterinary anatomical terminology, what does caudal mean?

Toward the back
Toward the head
Toward the tail Correct answer.
Toward the belly

Explanation

In veterinary anatomy, cranial means toward the head and caudal means toward the tail. Dorsal refers to the back or upper surface, and ventral refers to the belly or lower surface. These terms are used consistently in quadrupeds regardless of the animal's posture.

Question 2Veterinary Medical Terminology and Anatomy

The diaphragm forms a muscular boundary between which two major body cavities in the dog?

Cranial cavity and spinal cavity
Pericardial cavity and pleural cavity
Thoracic cavity and abdominal cavity Correct answer.
Pelvic cavity and abdominal cavity

Explanation

The diaphragm is the dome-shaped muscle that separates the thoracic cavity from the abdominal cavity. The thoracic cavity contains the heart and lungs, while the abdominal cavity contains most digestive and urinary organs. The pelvic cavity is a continuation of the abdominal cavity, and the pericardial and pleural cavities are subdivisions of the thorax.

Question 3Veterinary Medical Terminology and Anatomy

A veterinary record lists 'cystectomy.' Which meaning does the suffix -ectomy contribute to this term?

Surgical incision
Surgical repair
Inflammation
Surgical removal Correct answer.

Explanation

The suffix -ectomy means surgical removal or excision of a structure. For example, cystectomy refers to removal of the urinary bladder, while -otomy means incision into and -itis means inflammation. Recognizing suffixes helps decode veterinary medical terms accurately.

Question 4Veterinary Medical Terminology and Anatomy

Which anatomical plane divides the body into cranial and caudal portions?

Dorsal plane
Median sagittal plane
Sagittal plane
Transverse plane Correct answer.

Explanation

A transverse plane runs perpendicular to the long axis of the body and divides it into cranial and caudal portions. A dorsal plane separates dorsal from ventral portions, while sagittal and median planes separate left and right portions. The median plane is a midline sagittal plane.

Question 5Veterinary Medical Terminology and Anatomy

In a monogastric animal, which sequence correctly traces the path of ingesta from the stomach through the small intestine?

Stomach → duodenum → ileum → jejunum → cecum
Stomach → duodenum → jejunum → ileum → cecum Correct answer.
Stomach → ileum → jejunum → duodenum → colon
Stomach → cecum → duodenum → jejunum → ileum

Explanation

The small intestine is divided, in order, into the duodenum, jejunum, and ileum. Ingesta leaves the stomach through the pylorus and enters the duodenum first, then passes through the jejunum and ileum before reaching the cecum and colon. The listed order reflects that proximal-to-distal flow.

Question 6Veterinary Medical Terminology and Anatomy

Which blood vessel carries oxygenated blood from the lungs to the left atrium?

Aorta
Pulmonary vein Correct answer.
Caudal vena cava
Pulmonary artery

Explanation

Pulmonary veins return oxygenated blood from the lungs to the left atrium, which is an exception to the usual rule that veins carry deoxygenated blood. The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs. The caudal vena cava returns systemic venous blood to the right atrium, and the aorta carries blood from the left ventricle to the body.

Question 7Veterinary Medical Terminology and Anatomy

Which bone is the major long bone of the hindlimb that articulates proximally with the acetabulum?

Femur Correct answer.
Scapula
Humerus
Tibia

Explanation

The femur is the long bone of the thigh, and its head articulates with the acetabulum of the pelvis to form the hip joint. The humerus and scapula are part of the forelimb, while the tibia is the major distal hindlimb bone that articulates with the femur at the stifle.

Question 8Veterinary Medical Terminology and Anatomy

Which structure is the structural and functional unit of the kidney?

Ureter
Glomerulus
Renal pelvis
Nephron Correct answer.

Explanation

The nephron is the structural and functional unit of the kidney and consists of a renal corpuscle and renal tubules. The renal pelvis and ureter are urine-collecting and transport structures, not filtration units. The glomerulus is only one component of a nephron.

Question 9Veterinary Medical Terminology and Anatomy

Which nerve provides motor innervation to the diaphragm in the dog?

Trigeminal nerve
Sciatic nerve
Vagus nerve
Phrenic nerve Correct answer.

Explanation

The phrenic nerve supplies motor innervation to the diaphragm, making it essential for normal ventilation. The vagus nerve is primarily parasympathetic to thoracic and abdominal viscera, the sciatic nerve serves the hindlimb, and the trigeminal nerve supplies structures of the head. Damage to the phrenic nerve can impair breathing.

Question 10Veterinary Medical Terminology and Anatomy

In fetal circulation, which vessel connects the pulmonary trunk to the descending aorta and allows most blood to bypass the lungs?

Ductus arteriosus Correct answer.
Ligamentum arteriosum
Ductus venosus
Foramen ovale

Explanation

The ductus arteriosus is a fetal vessel that shunts blood from the pulmonary trunk to the descending aorta, reducing flow through the nonfunctional lungs. The foramen ovale shunts blood between the atria, while the ductus venosus bypasses the liver. After birth, the ductus arteriosus normally closes and becomes the ligamentum arteriosum.

Question 11Veterinary Medical Terminology and Anatomy

In veterinary directional terminology, which term means 'toward the nose' when describing a structure on the head?

Caudal
Rostral Correct answer.
Ventral
Dorsal

Explanation

Rostral specifically means toward the nose and is the preferred directional term for structures on the head. Caudal means toward the tail, while dorsal and ventral refer to upper/back and lower/belly surfaces, respectively.

Question 12Veterinary Medical Terminology and Anatomy

The prefix brady- in a veterinary term such as bradycardia indicates which meaning?

Painful
Slow Correct answer.
Rapid
Absent

Explanation

The prefix brady- means slow, so bradycardia refers to an abnormally slow heart rate. The contrasting prefix tachy- means rapid.

Question 13Veterinary Medical Terminology and Anatomy

Which suffix, when added to a root, denotes inflammation of the structure named by the root?

-osis
-megaly
-pathy
-itis Correct answer.

Explanation

The suffix -itis means inflammation, as in dermatitis or cystitis. It is distinct from suffixes that indicate a condition, enlargement, or disease process.

Question 14Veterinary Medical Terminology and Anatomy

Which lymph node is most readily palpated behind the stifle in a healthy dog?

Superficial cervical lymph node
Mandibular lymph node
Inguinal lymph node
Popliteal lymph node Correct answer.

Explanation

The popliteal lymph node lies caudal to the stifle in the popliteal fossa and is commonly palpated there. Mandibular, superficial cervical, and inguinal nodes are palpated at other body locations.

Question 15Veterinary Medical Terminology and Anatomy

Which heart chamber receives deoxygenated blood directly from the caudal vena cava?

Left atrium
Left ventricle
Right atrium Correct answer.
Right ventricle

Explanation

The caudal vena cava returns deoxygenated blood from the caudal body to the right atrium. Blood then flows into the right ventricle before entering the pulmonary circulation.

Question 16Veterinary Medical Terminology and Anatomy

The kidneys of the dog are described as retroperitoneal. What does this indicate about their position?

They are suspended within the peritoneal cavity by mesentery
They are enclosed within the omental bursa
They lie outside the peritoneal cavity Correct answer.
They are located within the thoracic cavity

Explanation

Retroperitoneal means the kidneys are positioned behind the peritoneum and outside the peritoneal cavity, against the dorsal body wall. They are not suspended by mesentery like intraperitoneal organs.

Question 17Veterinary Medical Terminology and Anatomy

In the permanent dentition of the dog, which teeth make up the carnassial pair on each side?

Upper canine and lower canine
Upper fourth premolar and lower first molar Correct answer.
Upper second premolar and lower second premolar
Upper first incisor and lower first incisor

Explanation

The carnassial pair in the dog is formed by the upper fourth premolar and the lower first molar, which are adapted for shearing food. Incisors, canines, and other premolars serve different dental functions.

Question 18Veterinary Medical Terminology and Anatomy

Which sequence lists the layers of the heart wall in order from outermost to innermost?

Endocardium, myocardium, epicardium
Myocardium, endocardium, epicardium
Epicardium, myocardium, endocardium Correct answer.
Pericardium, endocardium, myocardium

Explanation

The heart wall layers from outside to inside are the epicardium, myocardium, and endocardium. The myocardium is the thick muscular middle layer, and the endocardium lines the chambers.

Question 19Veterinary Medical Terminology and Anatomy

Which cranial nerve supplies motor innervation to the muscles of mastication?

Glossopharyngeal nerve (CN IX)
Trigeminal nerve (CN V) Correct answer.
Facial nerve (CN VII)
Hypoglossal nerve (CN XII)

Explanation

The mandibular branch of the trigeminal nerve (CN V) provides motor innervation to the muscles of mastication. The facial nerve controls facial expression, the glossopharyngeal nerve serves pharyngeal and taste functions, and the hypoglossal nerve controls the tongue.

Question 20Veterinary Medical Terminology and Anatomy

Which statement correctly distinguishes a ligament from a tendon in musculoskeletal anatomy?

A ligament connects bone to bone, while a tendon connects muscle to bone Correct answer.
A ligament connects nerve to muscle, while a tendon connects bone to cartilage
A ligament connects skin to fascia, while a tendon connects muscle to muscle
A ligament connects muscle to bone, while a tendon connects bone to bone

Explanation

A ligament is a fibrous band that connects bone to bone and typically stabilizes a joint. A tendon connects muscle to bone and transmits the force generated by muscle contraction.

Question 21Veterinary Medical Terminology and Anatomy

A veterinary assistant is describing the weight-bearing surface of a dog's forepaw distal to the carpus. Which directional term correctly identifies that surface?

Lateral
Plantar
Dorsal
Palmar Correct answer.

Explanation

In quadrupeds, palmar refers to the caudal surface of the forelimb distal to the carpus, including the metacarpus and digits. Plantar is the corresponding term for the hindlimb, while dorsal describes the opposite surface of the paw. Lateral means toward the side, away from the midline.

Question 22Veterinary Medical Terminology and Anatomy

The prefix tachy- appears in veterinary terms such as tachycardia. What does this prefix indicate?

Deficient
Slow
Fast Correct answer.
Painful

Explanation

Tachy- means fast or rapid, as seen in tachycardia, which is an increased heart rate. Brady- is the contrasting prefix meaning slow, while -algia denotes pain and hypo- often indicates deficiency.

Question 23Veterinary Medical Terminology and Anatomy

A veterinary technician is transcribing a term for a surgical incision into the abdomen. Which suffix correctly conveys 'surgical incision into'?

-ectomy
-otomy Correct answer.
-plasty
-ostomy

Explanation

The suffix -otomy means surgical incision into a structure, as in laparotomy, which is an incision into the abdominal cavity. The suffix -ectomy means surgical removal, -ostomy means creation of an opening, and -plasty means surgical repair.

Question 24Veterinary Medical Terminology and Anatomy

Which organ secretes the hormones insulin and glucagon?

Thyroid gland
Pancreas Correct answer.
Adrenal cortex
Parathyroid gland

Explanation

The pancreatic islets contain beta cells that secrete insulin and alpha cells that secrete glucagon, hormones central to blood glucose regulation. The thyroid gland produces thyroid hormones, the adrenal cortex produces corticosteroids, and the parathyroid glands secrete parathyroid hormone.

Question 25Veterinary Medical Terminology and Anatomy

Which type of epithelium forms the thin barrier lining the pulmonary alveoli?

Stratified squamous epithelium
Simple cuboidal epithelium
Simple squamous epithelium Correct answer.
Pseudostratified ciliated columnar epithelium

Explanation

Alveoli are lined by a very thin simple squamous epithelium that permits rapid gas diffusion between air and blood. Simple cuboidal epithelium lines many ducts and tubules, stratified squamous epithelium resists abrasion, and pseudostratified ciliated columnar epithelium lines much of the larger respiratory tract.

Question 26Veterinary Medical Terminology and Anatomy

Which valve separates the left atrium from the left ventricle in the dog?

Aortic valve
Tricuspid valve
Mitral valve Correct answer.
Pulmonary valve

Explanation

The mitral valve, also called the left atrioventricular valve, separates the left atrium from the left ventricle and prevents backflow during systole. The tricuspid valve is the right atrioventricular valve, while the pulmonary and aortic valves are semilunar valves located at the outflow tracts.

Question 27Veterinary Medical Terminology and Anatomy

Which tarsal bone articulates with the distal tibia to form the talocrural joint in the dog?

Cuboid
Calcaneus
Talus Correct answer.
Navicular

Explanation

The talus, also called the tibial tarsal bone, articulates with the distal tibia at the talocrural joint, commonly known as the hock. The calcaneus forms the heel and does not articulate directly with the tibia, while the navicular and cuboid are more distally located tarsal bones.

Question 28Veterinary Medical Terminology and Anatomy

Which region of the brain regulates body temperature, thirst, and hunger?

Cerebellum
Cerebral cortex
Medulla oblongata
Hypothalamus Correct answer.

Explanation

The hypothalamus maintains homeostasis by regulating temperature, water balance, hunger, and endocrine activity through its control of the pituitary gland. The cerebellum coordinates movement, the medulla oblongata controls vital autonomic reflexes, and the cerebral cortex mediates higher processing.

Question 29Veterinary Medical Terminology and Anatomy

Which glial cell produces myelin in the peripheral nervous system of the dog?

Microglial cell
Oligodendrocyte
Astrocyte
Schwann cell Correct answer.

Explanation

Schwann cells myelinate axons in the peripheral nervous system, wrapping individual axons to form myelin sheaths. Oligodendrocytes perform the equivalent role in the central nervous system, astrocytes support the blood-brain barrier, and microglia are phagocytic immune cells of the nervous system.

Question 30Veterinary Medical Terminology and Anatomy

Which structure normally passes through the esophageal hiatus of the diaphragm in the dog?

Trachea
Caudal vena cava
Aorta
Esophagus Correct answer.

Explanation

The esophageal hiatus is the opening in the diaphragm through which the esophagus passes from the thorax into the abdomen to reach the stomach. The aorta passes through the aortic hiatus, and the caudal vena cava passes through the caval foramen. The trachea remains in the cervical and thoracic regions and does not pass through the diaphragm.

Question 31Veterinary Medical Terminology and Anatomy

A veterinary technician notes that a dog's elbow lies proximal to its carpus. What does proximal indicate in this description?

Closer to the body or point of attachment Correct answer.
Farther from the body or point of attachment
Toward the tail end of the body
Toward the midline of the body

Explanation

Proximal means nearer the trunk or the point where a limb attaches to the body. The elbow is proximal to the carpus because it is closer to the shoulder and trunk. Distal would describe the carpus relative to the elbow.

Question 32Veterinary Medical Terminology and Anatomy

A surgical report describes a procedure as a gastrectomy. Which meaning does the suffix -ectomy contribute to this term?

Surgical removal of Correct answer.
Inflammation of
Surgical incision into
Surgical repair of

Explanation

-ectomy is a suffix meaning surgical removal of a structure. A gastrectomy therefore is removal of all or part of the stomach. It does not mean incision, inflammation, or repair.

Question 33Veterinary Medical Terminology and Anatomy

In the term hyperthyroidism, what does the prefix hyper- indicate about thyroid activity?

Absence of
Below normal
Inflammation of
Above normal or excessive Correct answer.

Explanation

The prefix hyper- means above, excessive, or more than normal. In hyperthyroidism, the thyroid gland produces excessive thyroid hormone. The opposite prefix is hypo-, meaning below normal.

Question 34Veterinary Medical Terminology and Anatomy

A transverse plane is used to divide a dog's body into which two parts?

Equal left and right halves
Dorsal and ventral portions
Superficial and deep portions
Cranial and caudal parts Correct answer.

Explanation

A transverse plane runs perpendicular to the body's long axis and divides the body into cranial and caudal parts. A median plane divides the body into equal left and right halves, while a dorsal plane separates dorsal from ventral parts.

Question 35Veterinary Medical Terminology and Anatomy

Which bone in the dog is classified as a sesamoid bone?

Patella Correct answer.
Calcaneus
Scapula
Radius

Explanation

Sesamoid bones are small bones embedded in tendons where they reduce friction or alter the direction of pull. The patella is the largest sesamoid in the dog and lies in the quadriceps tendon. The scapula is flat, the radius is long, and the calcaneus is a tarsal bone.

Question 36Veterinary Medical Terminology and Anatomy

In the ruminant stomach, which compartment is commonly called the honeycomb?

Omasum
Reticulum Correct answer.
Abomasum
Rumen

Explanation

The reticulum is the ruminant forestomach compartment with a mucosa raised into honeycomb-like ridges. The rumen has papillae, the omasum has many leaves, and the abomasum is the glandular true stomach.

Question 37Veterinary Medical Terminology and Anatomy

Which structure serves as a common passageway for both inhaled air and swallowed food in the dog?

Trachea
Larynx
Esophagus
Pharynx Correct answer.

Explanation

The pharynx is the shared chamber behind the nasal and oral cavities, and both air and food pass through it. The larynx and trachea carry air only, while the esophagus carries food only.

Question 38Veterinary Medical Terminology and Anatomy

Which gastric epithelial cells are primarily responsible for secreting hydrochloric acid?

Parietal cells Correct answer.
Chief cells
Mucous neck cells
Enteroendocrine cells

Explanation

Parietal cells, located in gastric glands, secrete hydrochloric acid and thus acidify the stomach. Chief cells secrete pepsinogen, mucous cells secrete mucus, and enteroendocrine cells release hormones.

Question 39Veterinary Medical Terminology and Anatomy

Which muscle group is the primary extensor of the stifle joint in the dog?

Biceps femoris muscle
Quadriceps femoris Correct answer.
Gastrocnemius muscle
Semitendinosus muscle

Explanation

The quadriceps femoris is the large cranial thigh muscle group that inserts on the tibial tuberosity through the patellar ligament. Its contraction extends the stifle. The biceps femoris and semitendinosus are hamstring muscles that flex the stifle, and the gastrocnemius acts mainly on the hock.

Question 40Veterinary Medical Terminology and Anatomy

A dog is presented with drooping of the left side of the face, an inability to close the left eyelids, and a loss of movement of the left ear. Which cranial nerve is most likely affected?

Oculomotor nerve (CN III)
Hypoglossal nerve (CN XII)
Trigeminal nerve (CN V)
Facial nerve (CN VII) Correct answer.

Explanation

The facial nerve (CN VII) supplies the muscles of facial expression, including the orbicularis oculi that closes the eyelids and the muscles that move the pinna, so a unilateral lesion causes facial droop, inability to blink, and ear droop. The trigeminal nerve carries facial sensation and motor supply to the muscles of mastication, while the hypoglossal nerve controls tongue movement.

Question 41Patient Restraint and Handling

Which restraint method is the recommended first choice for a fearful, fractious cat that needs a brief examination and must be removed from its carrier?

Grasping both hind legs and pulling the cat straight out of the carrier.
Placing a nylon catch pole around the cat's neck to control movement.
Wrapping the cat in a thick towel with the head left accessible. Correct answer.
Scruffing the cat firmly and lifting until the front paws leave the table.

Explanation

A towel wrap is a low-stress first choice because it limits clawing and biting while keeping the cat calm. Scruffing can heighten fear and cause injury, pulling limbs risks fractures, and catch poles are reserved for extreme situations where neck injury risk is managed.

Question 42Patient Restraint and Handling

When should a veterinary assistant place a basket-style muzzle on a dog?

After the dog has been restrained in lateral recumbency.
Only for dogs that have already bitten someone in the clinic.
Only after the dog has been sedated for a procedure.
Before handling any dog that may bite, even a calm dog. Correct answer.

Explanation

A muzzle is a preventive tool for any dog that may bite, even one that looks calm at first. Waiting for a bite or for obvious aggression leaves the team exposed, and sedation is not required before muzzling.

Question 43Patient Restraint and Handling

Which of the following is an appropriate use of chemical restraint in veterinary practice?

Using a prescribed sedative for a highly anxious patient Correct answer.
Sedating every patient before routine nail trims to save time
Replacing all physical restraint so handlers need no training
Giving an over-the-counter antihistamine to any growling dog

Explanation

Chemical restraint is appropriate when a prescribed sedative protocol lowers fear and injury risk for a highly anxious patient. It complements, rather than replaces, trained physical handling, and it is not used routinely for every patient.

Question 44Patient Restraint and Handling

A cat needs a jugular venipuncture. Which restraint approach best minimizes stress and allows safe access?

Standing the cat on its hind legs and pulling the head upward by the ears.
Placing the cat in dorsal recumbency with the front legs extended toward the assistant.
Sternal recumbency at the table edge with the head gently extended. Correct answer.
Holding the cat in a towel wrap with the head covered during the draw.

Explanation

Sternal recumbency at the table edge lets the cat's head be gently extended so the jugular vein is accessible without pressure on the trachea. The cat remains upright and can be supported close to the body, reducing stress compared with dorsal or towel-covered restraint.

Question 45Patient Restraint and Handling

A medium dog is held in lateral recumbency for a radiograph, with its back against the assistant. Where should the assistant's hands be placed?

One around the neck and one pulling the tail.
Both on the dog's head, pressing the muzzle to the table.
Both under the abdomen, lifting the body off the table.
One on the lower forelimb and one on the upper hindlimb. Correct answer.

Explanation

In lateral recumbency the assistant keeps the upper forelimb and upper hindlimb controlled while the dog's back rests against the assistant's body. This keeps the patient straight and still for the radiograph without pressing on the abdomen or neck.

Question 46Patient Restraint and Handling

A rabbit needs a physical examination. Which handling technique is safest for the assistant and the rabbit?

Allowing the rabbit to hop freely on the exam table during the examination.
One hand under the chest and one under the hindquarters, close to your body. Correct answer.
Holding the rabbit by the ears to keep the head still.
Lifting the rabbit by the scruff while holding the rear legs with the other hand.

Explanation

Rabbits have a fragile lumbar spine, so the hindquarters must always be supported and the rabbit held close to the handler's body. Lifting by the scruff without rear support or by the ears can cause spinal fracture or ear injury.

Question 47Patient Restraint and Handling

A bird needs a nail trim. Which restraint is appropriate?

A tight fist around the body that restricts the keel and prevents sternal movement
Index and middle fingers on each side of the head, body supported Correct answer.
One wing extended and held by the wingtip only while the body is free
Dorsal recumbency for the entire procedure with the feet held together

Explanation

Birds must be able to move the sternum to breathe, so restraint should support the body without compressing the keel. Placing fingers on each side of the head controls the head while leaving the sternum free, and dorsal recumbency is not used for the whole procedure.

Question 48Patient Restraint and Handling

A large, fractious dog needs an IV catheter. The veterinarian asks for a standing restraint. Which technique is best?

One arm under the neck and one around the abdomen, pulling the dog against you. Correct answer.
Straddling the dog's neck and squeezing the front legs together.
Applying a gauze muzzle and then letting the dog's head move freely.
Lifting the front legs completely off the floor and holding the dog against a wall.

Explanation

A standing hold with one arm under the neck and one around the abdomen keeps the dog close and lets the vein side be accessed. Straddling or lifting the dog off the floor increases struggle and injury risk, and releasing the head removes control.

Question 49Patient Restraint and Handling

A horse needs a brief procedure. When is a twitch appropriate?

For a foal under four months of age that resists handling by the team.
For a brief painful procedure on a healthy adult horse after other methods fail. Correct answer.
As the first choice for any horse that steps away from the handler during an exam.
As a substitute for adequate sedation during a thirty-minute procedure.

Explanation

A twitch causes a short endorphin release and is used only for brief procedures on healthy adult horses after gentler methods fail. It is not appropriate for foals, as a first-line tool, or as a substitute for sedation during long procedures.

Question 50Patient Restraint and Handling

A dog stops struggling during restraint and holds still with wide eyes, a tense body, and a closed mouth. What is the most appropriate interpretation?

The dog has accepted the restraint and the procedure can continue quickly.
The dog is falling asleep and should be left alone on the table.
The dog is freezing from fear, so the team should pause and reassess. Correct answer.
The dog is about to wag its tail and should be praised.

Explanation

A wide-eyed, tense, motionless dog is often showing a fear freeze, not relaxation, and continuing can lead to escalation or injury. The safest response is to pause, reassess the handling plan, and consider low-stress techniques or chemical restraint.