CST Anatomy & Physiology for Surgery 2

Question 1

Which layer of the abdominal wall is the deepest fascia layer directly overlying the peritoneum?

Accepted Answer

Transversalis fascia

Answer

Transversalis fascia lies directly beneath the transversus abdominis muscle and just superficial to the peritoneum.

Question 2

The common bile duct passes through which structure before entering the duodenum?

Accepted Answer

Head of the pancreas

Answer

The common bile duct travels through the head of the pancreas before joining the main pancreatic duct and emptying into the duodenum at the ampulla of Vater.

Question 3

Which nerve is at greatest risk during a thyroidectomy and can result in hoarseness if damaged?

Accepted Answer

Recurrent laryngeal nerve

Answer

The recurrent laryngeal nerve innervates all intrinsic laryngeal muscles except the cricothyroid; injury causes hoarseness or voice loss.

Question 4

What is the primary function of surfactant produced by Type II pneumocytes?

Accepted Answer

Reduce surface tension in the alveoli

Answer

Surfactant reduces alveolar surface tension, preventing alveolar collapse (atelectasis) at the end of expiration.

Question 5

The saphenous vein is commonly harvested for coronary artery bypass grafting (CABG). Where does the great saphenous vein originate?

Accepted Answer

Dorsal venous arch of the foot

Answer

The great saphenous vein arises from the medial end of the dorsal venous arch of the foot and ascends along the medial aspect of the leg.

(CST) Certified Surgical Technician Practice Test

(CST) Certified Surgical Technician Practice Test

CST Anatomy & Physiology for Surgery 2