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Question 1Applied Anatomy and Physiology of the Human Body
In the standard anatomical position, the palms of the hands face in which direction?
- Backward
- Forward Correct answer.
- Toward the thighs
- Toward the floor
Explanation
The anatomical position is the reference posture used for all anatomical description: the body stands erect, the face and eyes point forward, the arms hang at the sides and the palms are turned forward. Any description of position, such as 'anterior' or 'medial', assumes this posture. Palms facing backward or toward the floor indicates a pronated, non-reference stance.
Question 2Applied Anatomy and Physiology of the Human Body
How many bones are present in the typical adult human skeleton?
- 176
- 256
- 206 Correct answer.
- 226
Explanation
The adult skeleton is conventionally described as having 206 bones, divided into the axial and appendicular divisions. An infant is born with roughly 270 separate bony elements, many of which later fuse. The figure of 206 is the standard reference used in anatomy texts.
Question 3Applied Anatomy and Physiology of the Human Body
Which structure is the largest organ of the human body?
- Lungs
- Liver
- Skin Correct answer.
- Brain
Explanation
The skin is the largest organ by both surface area and mass, forming the integumentary system that covers the entire body. It provides a protective barrier, thermoregulation and sensation. The liver is the largest internal solid organ but is smaller overall than the skin.
Question 4Applied Anatomy and Physiology of the Human Body
Which formed element of blood is primarily responsible for transporting oxygen?
- Erythrocytes Correct answer.
- Leukocytes
- Platelets
- Thrombocytes
Explanation
Erythrocytes, or red blood cells, contain haemoglobin, which binds oxygen in the pulmonary capillaries and releases it in the tissues. They are the most numerous formed element in blood. White cells and platelets serve defence and clotting respectively.
Question 5Applied Anatomy and Physiology of the Human Body
Which chamber of the heart ejects oxygenated blood into the systemic circulation?
- Right ventricle
- Right atrium
- Left atrium
- Left ventricle Correct answer.
Explanation
The left ventricle receives oxygenated blood from the left atrium and drives it through the aortic valve into the aorta and around the body. Its thick muscular wall reflects the high pressure required for systemic perfusion. The right side of the heart handles deoxygenated blood destined for the lungs.
Question 6Applied Anatomy and Physiology of the Human Body
How many pairs of cranial nerves arise from the brain?
- 12 Correct answer.
- 31
- 24
- 10
Explanation
Twelve pairs of cranial nerves emerge from the brain and brainstem, numbered I to XII from olfactory to hypoglossal. They carry sensory, motor or mixed fibres, mainly serving the head and neck. Spinal nerves are counted separately.
Question 7Applied Anatomy and Physiology of the Human Body
Which organ produces bile?
- Liver Correct answer.
- Spleen
- Pancreas
- Gallbladder
Explanation
Bile is secreted by hepatocytes in the liver and passes via the biliary ducts to the gallbladder for storage and concentration. Bile salts assist in the emulsification of dietary fats. The gallbladder stores bile but does not manufacture it.
Question 8Applied Anatomy and Physiology of the Human Body
Which endocrine gland is often described as the master gland because it regulates the activity of other glands?
- Thyroid
- Pituitary Correct answer.
- Pineal
- Adrenal
Explanation
The pituitary gland, seated in the sella turcica, secretes trophic hormones such as TSH, ACTH, FSH and LH that control the thyroid, adrenal cortex and gonads. Its activity is itself influenced by hypothalamic releasing factors. This controlling role underlies the 'master gland' description.
Question 9Applied Anatomy and Physiology of the Human Body
Which vessel is most commonly selected for arterial injection during embalming?
- Brachial artery
- Popliteal artery
- Carotid artery Correct answer.
- Radial artery
Explanation
The common carotid artery, usually the right, is the preferred injection site because it is large, lies superficially in the neck and distributes fluid directly to the head and via the circle of Willis and descending branches to the trunk. It is accessible through a short incision and is easily raised with a director. Limb vessels are used mainly when the carotid is unavailable or the case is restricted.
Question 10Applied Anatomy and Physiology of the Human Body
Which vein is most commonly used for drainage during embalming?
- Saphenous vein
- Jugular vein Correct answer.
- Femoral vein
- Cephalic vein
Explanation
The internal jugular vein, usually the right, is the standard drainage route because it lies close to the carotid injection site and drains the cerebral and facial venous sinuses. Paired with carotid injection it allows fluid to pass from the arterial side through the capillary bed and out at the drainage point. Limb veins serve as secondary options in restricted cases.
Question 11Applied Anatomy and Physiology of the Human Body
The mitral valve lies between which two chambers of the heart?
- Left ventricle and aorta
- Left atrium and left ventricle Correct answer.
- Right atrium and right ventricle
- Right ventricle and pulmonary trunk
Explanation
The mitral or bicuspid valve guards the left atrioventricular opening, preventing backflow from the left ventricle into the left atrium during systole. It is attached to chordae tendineae and papillary muscles. The right atrioventricular opening is guarded by the tricuspid valve.
Question 12Applied Anatomy and Physiology of the Human Body
Which layer of the skin is the outermost?
- Dermis
- Hypodermis
- Stratum basale
- Epidermis Correct answer.
Explanation
The epidermis is the superficial, avascular epithelial layer of the skin and forms the body's outer barrier. Beneath it lies the dermis with its vessels, nerves and collagen, and beneath that the fatty hypodermis. The stratum basale is merely the deepest cell layer within the epidermis.
Question 13Applied Anatomy and Physiology of the Human Body
Which structure separates the thoracic cavity from the abdominal cavity?
- Pleura
- Peritoneum
- Diaphragm Correct answer.
- Mediastinum
Explanation
The diaphragm is a dome-shaped musculotendinous sheet that forms the floor of the thoracic cavity and the roof of the abdominal cavity. Its contraction enlarges the thorax during inspiration. The other structures named are membranes or partitions within a single cavity.
Question 14Applied Anatomy and Physiology of the Human Body
What is the functional unit of the kidney?
- Neuron
- Alveolus
- Nephron Correct answer.
- Glomerulus
Explanation
The nephron is the structural and functional unit of the kidney, comprising the renal corpuscle and the tubule system that filters plasma and modifies the filtrate. Each kidney contains roughly a million nephrons. The glomerulus is only the capillary tuft within the renal corpuscle.
Question 15Applied Anatomy and Physiology of the Human Body
Which plasma protein is present in the greatest concentration?
- Fibrinogen
- Prothrombin
- Albumin Correct answer.
- Globulin
Explanation
Albumin accounts for roughly half of total plasma protein and is the chief contributor to plasma oncotic pressure. It is produced by the liver and also acts as a carrier for hormones, drugs and fatty acids. The globulins and clotting factors are present in smaller amounts.
Question 16Applied Anatomy and Physiology of the Human Body
What is the normal pH range of arterial blood?
- 7.50–7.60
- 7.35–7.45 Correct answer.
- 7.20–7.30
- 7.00–7.20
Explanation
Arterial blood is normally maintained within a narrow pH window of about 7.35 to 7.45 by buffer systems, respiration and renal regulation. Values below this range indicate acidaemia and values above indicate alkalaemia. Tight control is essential because enzymes and cell membranes are highly pH sensitive.
Question 17Applied Anatomy and Physiology of the Human Body
Which is the outermost of the meninges covering the brain?
- Falx cerebri
- Arachnoid mater
- Dura mater Correct answer.
- Pia mater
Explanation
The meninges are three connective tissue layers; from outside inward they are the dura mater, arachnoid mater and pia mater. The dura mater is tough and fibrous and lies against the inner surface of the skull. The falx cerebri is a dural fold, not a separate layer.
Question 18Applied Anatomy and Physiology of the Human Body
The knee joint is best classified as which type of joint?
- Pivot
- Hinge Correct answer.
- Ball-and-socket
- Saddle
Explanation
The knee is a modified hinge joint that permits flexion and extension as its principal movements, with a small amount of rotation when flexed. Its bony surfaces and ligaments restrict movement largely to one plane. Its classification follows from that restricted range rather than from the shape of the articulating surfaces alone.
Question 19Applied Anatomy and Physiology of the Human Body
In which structures does gas exchange between air and blood take place?
- Trachea
- Alveoli Correct answer.
- Bronchi
- Pleura
Explanation
Alveoli are thin-walled air sacs surrounded by pulmonary capillaries, and their combined surface provides the membrane across which oxygen and carbon dioxide diffuse. Bronchi and bronchioles are conducting airways that do not exchange gas. The pleura is a serous covering, not a respiratory surface.
Question 20Applied Anatomy and Physiology of the Human Body
Which option lists the three sections of the small intestine in correct proximal-to-distal order?
- Ileum, jejunum, duodenum
- Duodenum, ileum, jejunum
- Jejunum, duodenum, ileum
- Duodenum, jejunum, ileum Correct answer.
Explanation
Chyme leaves the stomach and enters the duodenum, then passes through the jejunum and finally the ileum before reaching the caecum. Each section has a characteristic mucosal structure and role in digestion and absorption. The order follows the direction of the food stream.
Question 21Applied Anatomy and Physiology of the Human Body
Which artery is the first branch of the aortic arch?
- Left subclavian artery
- Left common carotid artery
- Left coronary artery
- Brachiocephalic artery Correct answer.
Explanation
The aortic arch normally gives three branches in order: the brachiocephalic trunk, the left common carotid artery and the left subclavian artery. The brachiocephalic trunk then divides into the right subclavian and right common carotid arteries. Coronary arteries arise from the aortic root, not the arch.
Question 22Applied Anatomy and Physiology of the Human Body
Cardiac muscle tissue is best described as which combination of properties?
- Voluntary and non-striated
- Voluntary and striated
- Involuntary and striated Correct answer.
- Involuntary and non-striated
Explanation
Cardiac muscle is striated because its contractile proteins are arranged in regular sarcomeres, yet it contracts without conscious control, being governed by the intrinsic conduction system and autonomic tone. Its branched, intercalated-disc-linked fibres distinguish it further from skeletal muscle. The combination of striation with involuntarily control separates it from both skeletal and smooth muscle.
Question 23Applied Anatomy and Physiology of the Human Body
Which plane divides the body into equal right and left halves?
- Transverse plane
- Frontal plane
- Oblique plane
- Median plane Correct answer.
Explanation
The median or midsagittal plane runs vertically through the midline of the body, producing equal right and left halves. Any sagittal plane parallel to it divides the body into unequal left and right portions. Transverse and frontal planes divide the body along different axes.
Question 24Applied Anatomy and Physiology of the Human Body
Within the femoral triangle, the femoral vein lies in which relation to the femoral artery?
- Superficial
- Anterior
- Lateral
- Medial Correct answer.
Explanation
From lateral to medial the femoral triangle contains the femoral nerve, artery and vein, remembered as NAVel. The vein therefore lies medial to the artery and both lie within the femoral sheath. Recognising this relationship prevents misidentification of the vessels during exposure.
Question 25Applied Anatomy and Physiology of the Human Body
The thoracic duct empties lymph into which vessel?
- Azygos vein
- Left subclavian vein Correct answer.
- Superior vena cava
- Right subclavian vein
Explanation
The thoracic duct ascends through the thorax and terminates at the junction of the left internal jugular and left subclavian veins, returning most of the body's lymph to the bloodstream. Its right-sided counterpart, the right lymphatic duct, drains only the upper right quadrant. Venous return of lymph restores plasma volume and distributes absorbed fats.
Question 26Applied Anatomy and Physiology of the Human Body
Which division of the autonomic nervous system prepares the body for 'fight or flight'?
- Sympathetic division Correct answer.
- Enteric division
- Somatic division
- Parasympathetic division
Explanation
The sympathetic division mobilises the body during stress, raising heart rate and blood pressure, dilating the airways and releasing stored glucose. The parasympathetic division produces the opposing 'rest and digest' effects.
Question 27Applied Anatomy and Physiology of the Human Body
Which structure normally generates the electrical impulse that sets the resting rhythm of the heart?
- Atrioventricular node
- Purkinje fibres
- Bundle of His
- Sinoatrial node Correct answer.
Explanation
The sinoatrial node lies in the wall of the right atrium and depolarises spontaneously at the fastest rate, so it sets the pace for the rest of the conduction system. Impulses then spread through the atria to the atrioventricular node and onwards to the ventricles.
Question 28Applied Anatomy and Physiology of the Human Body
The patella is best classified as which type of bone?
- Long bone
- Flat bone
- Irregular bone
- Sesamoid bone Correct answer.
Explanation
A sesamoid bone is a small bone embedded within a tendon where that tendon crosses a joint; the patella develops in the quadriceps tendon at the knee. This arrangement improves the mechanical advantage of the muscle and protects the tendon from wear.
Question 29Applied Anatomy and Physiology of the Human Body
During quiet inspiration, contraction of the diaphragm produces which effect?
- It closes the glottis so that air is trapped within the lungs
- It relaxes and arches upward, reducing the vertical dimension of the thorax
- It contracts the abdominal wall and pushes the viscera upward
- It flattens and increases the vertical dimension of the thoracic cavity Correct answer.
Explanation
When the diaphragm contracts its fibres shorten and the dome descends, enlarging the thoracic cavity vertically. This lowers intrapulmonary pressure so air flows in from the atmosphere.
Question 30Applied Anatomy and Physiology of the Human Body
The serous membrane that directly covers the outer surface of the stomach and intestines is the:
- tunica adventitia
- visceral peritoneum Correct answer.
- visceral pleura
- parietal peritoneum
Explanation
Serous membranes are named by the surface they contact: the layer applied to an organ is visceral, while the layer lining the cavity wall is parietal. The visceral peritoneum therefore forms the serosal coat of the abdominal organs.
Question 31Applied Anatomy and Physiology of the Human Body
Which formed element of blood is chiefly responsible for forming the initial plug at a site of vessel injury?
- Platelets Correct answer.
- Erythrocytes
- Lymphocytes
- Neutrophils
Explanation
Platelets adhere to exposed collagen, become activated and aggregate to form a temporary haemostatic plug. This primary haemostasis is later reinforced by the fibrin mesh of the coagulation cascade.
Question 32Applied Anatomy and Physiology of the Human Body
In which of the following is smooth muscle the principal contractile tissue?
- The wall of the small intestine Correct answer.
- The biceps brachii of the arm
- The striated muscle of the tongue
- The myocardium of the atrial wall
Explanation
Smooth muscle is involuntary and non-striated, forming the muscularis of hollow viscera such as the gut, where it produces peristalsis. Skeletal and cardiac muscle are both striated and are found elsewhere.
Question 33Applied Anatomy and Physiology of the Human Body
The coronary arteries arise from which part of the vascular system?
- The ascending aorta, just above the aortic valve Correct answer.
- The descending thoracic aorta, below the ligamentum arteriosum
- The pulmonary trunk, immediately above the pulmonary valve
- The arch of the aorta, at the origin of the brachiocephalic trunk
Explanation
The right and left coronary arteries branch from the aortic sinuses at the root of the ascending aorta, immediately above the cusps of the aortic valve. Blood enters them chiefly during diastole, when the valve cusps are closed and the sinuses are filled.
Question 34Applied Anatomy and Physiology of the Human Body
In anatomical terminology, the term 'proximal' means:
- Farther along a limb from its point of attachment
- Closer to the point of attachment of a limb to the trunk Correct answer.
- Situated nearer to the body surface than to the interior of the body
- Situated nearer to the midline of the body
Explanation
Proximal and distal are relative terms describing distance along a limb from its point of attachment to the trunk. The elbow is therefore proximal to the wrist but distal to the shoulder.
Question 35Applied Anatomy and Physiology of the Human Body
Which of the following organs lies in the retroperitoneal space?
- The spleen
- The kidney Correct answer.
- The stomach
- The transverse colon
Explanation
Retroperitoneal organs lie behind the parietal peritoneum and are only partially covered by it; the kidneys, ureters, adrenals and most of the duodenum and pancreas are examples. Organs such as the stomach, spleen and transverse colon are suspended within the peritoneal cavity by mesenteries.
Question 36Applied Anatomy and Physiology of the Human Body
The air sacs of the lung are lined by which tissue, best suited to rapid diffusion of gases?
- Simple columnar epithelium
- Stratified squamous epithelium
- Simple squamous epithelium Correct answer.
- Pseudostratified ciliated columnar epithelium
Explanation
A single flattened layer of cells gives the shortest possible diffusion distance between alveolar air and capillary blood. Simple squamous epithelium also lines the capillaries, forming together the thin respiratory membrane.
Question 37Microbiology, Infection Control and Transmissible Disease
Colonisation of a body by micro-organisms is best described as a state in which:
- Organisms are present and multiply without tissue damage Correct answer.
- A single organism has contaminated a surface but has not multiplied
- The host carries antibodies but no living organisms remain
- Organisms have invaded tissue and provoked a measurable immune response
Explanation
Colonisation means organisms are present and multiplying on a surface or in a host without invading tissue or producing a host response. Infection requires tissue invasion or damage together with a detectable host reaction.
Question 38Microbiology, Infection Control and Transmissible Disease
Standard precautions should be applied to which group when handling a body in the mortuary?
- Only those in recognised high-risk groups
- Only those with visible blood or open wounds
- All bodies, whatever the stated diagnosis Correct answer.
- Only those with a confirmed bloodborne virus
Explanation
Standard precautions assume that every body may carry a transmissible agent, because diagnosis is often unknown or incomplete. They are therefore applied universally rather than being targeted at selected cases.
Question 39Microbiology, Infection Control and Transmissible Disease
Which group of micro-organisms shows the greatest resistance to chemical disinfection?
- Yeasts such as Candida species
- Vegetative bacteria such as Pseudomonas species
- Enveloped viruses such as HIV
- Bacterial endospores such as Bacillus species Correct answer.
Explanation
Endospores are dormant, highly resistant structures that survive many disinfectants and ordinary autoclave cycles that readily kill vegetative organisms. Disinfectant choice and contact time must therefore be matched to whether spores may be present.
Question 40Microbiology, Infection Control and Transmissible Disease
Of the following viruses, which carries the greatest risk of transmission from a single percutaneous needlestick injury?
- Hepatitis C virus
- Hepatitis B virus Correct answer.
- Human immunodeficiency virus
- Hepatitis A virus
Explanation
Hepatitis B has the highest per-exposure transmission risk after a needlestick, substantially greater than hepatitis C and far greater than HIV. This is why hepatitis B vaccination is a key control measure for embalmers.
Question 41Microbiology, Infection Control and Transmissible Disease
Which practice is correct when finishing with a needle and syringe used during cavity treatment?
- Recap carefully using two hands
- Recap once the needle has been wiped
- Recap and then place the needle in general waste
- Do not recap needles by hand at any time Correct answer.
Explanation
Recapping by hand is the commonest cause of needlestick injury, so used needles should be placed directly into a sharps container without recapping. Any technique that brings a hand near the point increases the risk.
Question 42Microbiology, Infection Control and Transmissible Disease
A blood spill on the embalming room floor should be disinfected with which preparation?
- Undiluted household bleach applied neat
- A 1:10 dilution of household bleach Correct answer.
- A 1:1000 dilution of household bleach
- A 1:100 dilution of household bleach
Explanation
A 1:10 dilution of household bleach provides roughly 5000 ppm available chlorine, a concentration effective against bloodborne viruses on contaminated surfaces. Stronger solutions add vapour hazard without useful benefit and weaker ones may not be adequate for blood.
Question 43Microbiology, Infection Control and Transmissible Disease
Which statement about Creutzfeldt-Jakob disease is most accurate in relation to embalming practice?
- Prions are enveloped viruses and are easily destroyed by alcohol-based disinfectants
- Formaldehyde fixation is the only method that reliably inactivates prions on contaminated instruments
- Standard disinfection and ordinary autoclave cycles do not reliably inactivate prions Correct answer.
- Prions are transmitted only through blood, so ordinary barrier precautions are sufficient
Explanation
Prions are abnormally folded proteins that resist formaldehyde, alcohol, radiation and routine autoclave cycles. Known or suspected cases therefore require specific prion protocols and dedicated or single-use instruments.
Question 44Microbiology, Infection Control and Transmissible Disease
When removing personal protective equipment after embalming, which item should be removed first?
- Gown
- Gloves Correct answer.
- Respirator or mask
- Eye protection
Explanation
Gloves are the most heavily contaminated item and are removed first, followed by eye protection and gown, with the respirator last. This sequence keeps contaminated surfaces away from the face and from clean clothing.
Question 45Microbiology, Infection Control and Transmissible Disease
An instrument that will contact sterile tissue during a procedure must be classified and processed as:
- Critical, and it requires sterilization Correct answer.
- Non-critical, and it requires low-level disinfection
- Semi-critical, and it requires high-level disinfection
- Non-critical, and it requires cleaning with soap and water only
Explanation
Under the Spaulding classification, items entering sterile tissue or the vascular system are critical and must be sterilized. Items contacting intact mucous membranes are semi-critical, and those contacting intact skin only are non-critical.
Question 46Microbiology, Infection Control and Transmissible Disease
Which set of conditions represents a standard gravity-displacement autoclave cycle for sterilizing instruments?
- 160°C dry heat for 2 hours
- 100°C at atmospheric pressure for 5 minutes
- 60°C with detergent for 30 minutes
- 121°C at 15 psi for 15 to 20 minutes Correct answer.
Explanation
The standard gravity-displacement cycle is 121°C at approximately 15 psi for 15 to 20 minutes, depending on load. Moist heat under pressure is what achieves sterilization within that time.
Question 47Microbiology, Infection Control and Transmissible Disease
Vaccination of embalming staff against hepatitis B is best described as which type of control?
- Protecting the susceptible host Correct answer.
- Reducing the portal of entry
- Interrupting the mode of transmission
- Eliminating the reservoir of infection
Explanation
Immunisation raises the resistance of the person at risk and therefore acts on the susceptible host link of the chain of infection. It works alongside, not instead of, barriers and safe working practices.
Question 48Microbiology, Infection Control and Transmissible Disease
Why are non-enveloped viruses such as norovirus a particular concern when selecting disinfectants?
- They are transmitted only by the airborne route and never by contact
- They are killed only by antibiotics, which cannot be used in the mortuary
- They lack a lipid envelope and so resist many disinfectants Correct answer.
- They survive only inside red blood cells and are released during drainage
Explanation
Enveloped viruses are relatively fragile because their lipid coat is easily disrupted by detergents and alcohols. Non-enveloped viruses have a tougher protein capsid and need a suitable virucidal product with adequate contact time.
Question 49Microbiology, Infection Control and Transmissible Disease
Immediately after sustaining a sharps injury during embalming, the first action should be to:
- Apply a strong disinfectant such as concentrated bleach to the puncture
- Wash the wound with soap and water and report the exposure Correct answer.
- Squeeze the wound firmly to express blood and then cover it
- Wait to see whether symptoms develop before seeking advice
Explanation
The wound should be washed with soap and water and the exposure reported at once so that risk assessment and any prophylaxis can begin promptly. Prompt reporting is essential because hepatitis B prophylaxis is time-dependent.
Question 50Microbiology, Infection Control and Transmissible Disease
Which precaution is required when embalming a body with active pulmonary tuberculosis?
- Standard precautions with no additional respiratory protection
- Droplet precautions with a surgical mask and eye protection
- Airborne precautions with a fit-tested N95 respirator Correct answer.
- Contact precautions with a gown and gloves only
Explanation
Tuberculosis is transmitted by airborne droplet nuclei that remain suspended and travel on air currents, so airborne precautions with respiratory protection are required. A surgical mask does not seal or filter adequately for this route.