Free Veterinary Anatomy and Physiology MCQs with Answers
59 Veterinary Anatomy and Physiology MCQs from Veterinary Science, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
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- A. Nephron
- B. Alveolus
- C. Sarcomere
- D. Osteon
Explanation: The nephron filters blood and modifies the filtrate to form urine. An alveolus belongs to the respiratory system, while a sarcomere and…
Correct answer: Nephron- A. Reticulum
- B. Rumen
- C. Omasum
- D. Abomasum
Explanation: The rumen contains microorganisms that ferment plant carbohydrates and produce volatile fatty acids.
Correct answer: Rumen- A. Trigeminal nerve
- B. Facial nerve
- C. Vagus nerve
- D. Hypoglossal nerve
Explanation: The vagus nerve carries extensive parasympathetic fibres to the heart, lungs and much of the digestive tract.
Correct answer: Vagus nerve- A. Atrioventricular node
- B. Bundle of His
- C. Purkinje fibres
- D. Sinoatrial node
Explanation: The sinoatrial node normally generates the fastest spontaneous electrical impulses and initiates each heartbeat.
Correct answer: Sinoatrial node- A. Parathyroid hormone
- B. Calcitonin
- C. Insulin
- D. Aldosterone
Explanation: Parathyroid hormone raises blood calcium through effects on bone, kidneys and indirectly the intestine.
Correct answer: Parathyroid hormone- A. Increase airway mucus production
- B. Reduce alveolar surface tension
- C. Stimulate red cell formation
- D. Increase pleural fluid volume
Explanation: Surfactant lowers alveolar surface tension and helps prevent alveolar collapse, especially during expiration.
Correct answer: Reduce alveolar surface tension- A. Soft palate
- B. Thyroid cartilage
- C. Epiglottis
- D. Vocal fold
Explanation: The epiglottis folds over the laryngeal entrance during swallowing and helps direct food toward the oesophagus.
Correct answer: Epiglottis- A. Secrete digestive enzymes
- B. Store urine temporarily
- C. Produce red blood cells
- D. Create a medullary osmotic gradient
Explanation: The loop of Henle establishes a medullary osmotic gradient that supports concentration of urine.
Correct answer: Create a medullary osmotic gradient- A. Troponin
- B. Actin
- C. Myosin
- D. Titin
Explanation: Calcium binds to troponin, causing tropomyosin to move away from actin's binding sites.
Correct answer: Troponin- A. Large alveolar sacs
- B. Air sacs with parabronchi
- C. A muscular diaphragm
- D. A complete tracheal ring system
Explanation: Birds use air sacs as bellows to move air through rigid lungs containing parabronchi, allowing largely unidirectional airflow.
Correct answer: Air sacs with parabronchi- A. Cranial mesenteric artery
- B. Caudal vena cava
- C. Hepatic portal vein
- D. Hepatic artery
Explanation: The hepatic portal vein collects blood from the stomach, intestines, spleen and pancreas and delivers it to the liver.
Correct answer: Hepatic portal vein- A. Simple cuboidal epithelium
- B. Pseudostratified columnar epithelium
- C. Stratified squamous epithelium
- D. Simple squamous epithelium
Explanation: Alveoli are mainly lined by thin simple squamous cells called type I pneumocytes, which allow rapid diffusion of gases.
Correct answer: Simple squamous epithelium- A. Epididymis
- B. Efferent ductules
- C. Seminiferous tubules
- D. Ductus deferens
Explanation: Sperm are produced in the seminiferous tubules but gain progressive motility and undergo functional maturation while passing through the…
Correct answer: Epididymis- A. Zona reticularis
- B. Zona glomerulosa
- C. Zona fasciculata
- D. Adrenal medulla
Explanation: The zona glomerulosa produces mineralocorticoids, mainly aldosterone, which promotes sodium retention and potassium excretion.
Correct answer: Zona glomerulosa- A. Aldosterone
- B. Atrial natriuretic peptide
- C. Antidiuretic hormone
- D. Parathyroid hormone
Explanation: Antidiuretic hormone, also called vasopressin, inserts aquaporin-2 channels into collecting duct cells and increases water reabsorption.
Correct answer: Antidiuretic hormone- A. Dopamine
- B. Norepinephrine
- C. Serotonin
- D. Acetylcholine
Explanation: Somatic motor neurons release acetylcholine at the neuromuscular junction, where it binds nicotinic receptors on the skeletal muscle…
Correct answer: Acetylcholine- A. Red bone marrow
- B. Yellow bone marrow
- C. Spleen
- D. Thymus
Explanation: Red bone marrow is the principal site where new red blood cells are produced in healthy adult mammals.
Correct answer: Red bone marrow- A. The horse normally breathes through its mouth
- B. The horse is an obligate nasal breather
- C. The dog is an obligate nasal breather
- D. The horse has no nasal turbinate bones
Explanation: Healthy horses are obligate nasal breathers because the soft palate forms a functional seal that limits oral breathing.
Correct answer: The horse is an obligate nasal breather- A. Production of testosterone
- B. Formation of seminal plasma
- C. Storage of mature sperm
- D. Secretion of gonadotropins
Explanation: The cauda epididymis serves mainly as a reservoir for mature sperm before ejaculation.
Correct answer: Storage of mature sperm- A. It increases sweating across the skin
- B. It increases heat production by muscles
- C. It reduces blood flow to the tongue
- D. It increases evaporative cooling from airways
Explanation: Panting increases airflow over moist surfaces of the mouth and upper respiratory tract, causing evaporation that removes heat.
Correct answer: It increases evaporative cooling from airwaysVeterinary Anatomy and Physiology MCQs: common questions
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There are 59 Veterinary Anatomy and Physiology MCQs in the Veterinary Science bank, shown 20 to a page with the correct answer and an explanation on each.
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Yes. Each Veterinary Anatomy and Physiology question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
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