BCSE Veterinary Anatomy and Physiology 2

Question 1

Which lymph node is most accessible for palpation in a healthy dog and is routinely evaluated during physical examination?

Accepted Answer

Popliteal lymph node

Answer

The popliteal lymph node, located in the popliteal fossa behind the stifle joint, is consistently palpable in dogs and is a standard part of the physical examination.

Question 2

The sinoatrial (SA) node in mammals is located in which cardiac structure?

Accepted Answer

Wall of the right atrium near the cranial vena cava

Answer

The SA node is located in the wall of the right atrium near the junction with the cranial vena cava and serves as the primary pacemaker of the heart.

Question 3

Which type of epithelium lines the urinary bladder and can change shape when the bladder distends?

Accepted Answer

Transitional epithelium (urothelium)

Answer

Transitional epithelium (urothelium) is uniquely adapted to stretch as the bladder fills and recoil when it empties.

Question 4

In ruminants, which forestomach compartment is responsible for receiving ingesta directly from the esophagus and initiating fermentation?

Accepted Answer

Rumen

Answer

The rumen is the largest forestomach compartment and is the primary site of microbial fermentation of plant material in ruminants.

Question 5

Which hormone, produced by the posterior pituitary gland, promotes water reabsorption in the renal collecting ducts?

Accepted Answer

Antidiuretic hormone (ADH)

Answer

Antidiuretic hormone (ADH, vasopressin) acts on aquaporin channels in collecting duct cells to increase water reabsorption and concentrate urine.

BCSE - Basic and Clinical Sciences Examination Practice Test

BCSE - Basic and Clinical Sciences Examination Practice Test

BCSE Veterinary Anatomy and Physiology 2