BCSE - Basic and Clinical Sciences Examination Veterinary Anatomy and Physiology Questions and Answers

Question 1

A 6-year-old Quarter Horse presents with epistaxis and dysphagia.
Endoscopic examination reveals a fungal plaque on the caudodorsal aspect of the medial guttural pouch, overlying a large artery.
Which artery is most likely affected?

Accepted Answer

Internal carotid artery

Answer

Maxillary artery

Answer

External carotid artery

Answer

Linguofacial trunk

Question 2

Which of the following statements most accurately describes a key physiological difference between the avian and mammalian respiratory systems?

Accepted Answer

Birds have a unidirectional flow of air through their lungs, facilitated by air sacs.

Answer

Avian lungs are highly elastic and expand significantly during inspiration.

Answer

Mammals utilize a crosscurrent exchange system for maximum oxygen uptake.

Answer

Gas exchange in mammals occurs primarily in structures called parabronchi.

Question 3

A 10-year-old female spayed domestic shorthair cat is being evaluated for chronic kidney disease. Which of the following is considered the most sensitive indicator of its glomerular filtration rate (GFR)?

Accepted Answer

Plasma clearance of iohexol

Answer

Blood urea nitrogen (BUN)

Answer

Urine specific gravity

Answer

Serum creatinine

Question 4

A beef steer on a high-concentrate feedlot diet presents with anorexia, depression, and a staggering gait. Rumenocentesis reveals a pH of 4.8. The primary pathophysiological event responsible for this condition is the rapid fermentation of carbohydrates leading to an excessive production of which substances?

Accepted Answer

Volatile fatty acids and lactic acid

Answer

Ketone bodies and ammonia

Answer

Bicarbonate and phosphate

Answer

Methane and carbon dioxide

Question 5

A dog is diagnosed with a ruptured cranial cruciate ligament (CCL). The instability caused by this injury, known as a positive cranial drawer sign, is due to the loss of the ligament's primary function. What is the primary function of the CCL in the canine stifle?

Accepted Answer

To prevent hyperextension and limit internal rotation of the tibia

Answer

To prevent abduction or varus angulation of the stifle

Answer

To prevent the femur from slipping caudally on the tibial plateau

Answer

To provide shock absorption and distribute load within the joint

Question 6

During a neurological examination of a dog, the veterinarian notes an absence of the palpebral reflex and a slight drooping of the ear and lip on the left side. These clinical signs are most indicative of dysfunction of which cranial nerve?

Accepted Answer

Cranial Nerve VII (Facial)

Answer

Cranial Nerve V (Trigeminal)

Answer

Cranial Nerve III (Oculomotor)

Answer

Cranial Nerve XII (Hypoglossal)