PCAT Anatomy 5

Question 1

Which muscle forms the posterior wall of the axilla?

Accepted Answer

Subscapularis and teres major

Answer

The posterior wall of the axilla is formed by the subscapularis, teres major, and latissimus dorsi muscles.

Question 2

The portal triad in the liver consists of a portal venule, hepatic arteriole, and which third structure?

Accepted Answer

Bile duct

Answer

The portal triad (hepatic triad) consists of a branch of the portal vein, hepatic artery, and bile duct running together in the periportal space.

Question 3

Which nerve is at risk during a surgical removal of the submandibular gland?

Accepted Answer

Marginal mandibular branch of CN VII

Answer

The marginal mandibular branch of the facial nerve, which controls lip depressors, is at risk during submandibular gland surgery.

Question 4

Transitional epithelium (urothelium) is characteristic of which organ?

Accepted Answer

Urinary bladder

Answer

Transitional epithelium lines the urinary bladder, ureters, and renal pelvis, allowing these organs to stretch and recoil.

Question 5

The circle of Willis is formed by the anastomosis of which two arterial systems?

Accepted Answer

Internal carotid and vertebrobasilar arteries

Answer

The circle of Willis is formed by anastomoses between the internal carotid arteries and the vertebrobasilar system via communicating arteries.

PCAT - Pharmacy College Admission Test Practice Test