CSFA Anatomy & Physiology 4

Question 1

During a Whipple procedure (pancreaticoduodenectomy), which major vascular structure posterior to the neck of the pancreas must be carefully protected?

Accepted Answer

Portal vein

Answer

The portal vein lies directly posterior to the neck of the pancreas and is the most critical vascular structure to protect during the pancreatic neck transection in a Whipple procedure.

Question 2

Which foramen in the base of the skull transmits the internal carotid artery into the cranial cavity?

Accepted Answer

Carotid canal

Answer

The internal carotid artery enters the skull through the carotid canal in the petrous portion of the temporal bone and then enters the middle cranial fossa.

Question 3

The hepatorenal recess (Morrison's pouch) is the most dependent peritoneal space in the supine position and is located between which two organs?

Accepted Answer

Right kidney and liver

Answer

Morrison's pouch lies between the posterior surface of the right lobe of the liver and the anterior surface of the right kidney and adrenal gland.

Question 4

Which muscle is responsible for plantar flexion AND inversion of the foot, making it important in clubfoot deformity correction?

Accepted Answer

Tibialis posterior

Answer

The tibialis posterior is a primary plantar flexor and invertor of the foot; its tendon dysfunction leads to acquired flatfoot deformity, and its overactivity contributes to clubfoot.

Question 5

During a mastectomy, the long thoracic nerve must be preserved to prevent which functional deficit?

Accepted Answer

Winging of the scapula

Answer

The long thoracic nerve (C5-C7) innervates the serratus anterior; injury causes the medial scapular border to wing away from the thoracic wall.

CSFA - Certified Surgical First Assistant Practice Test

CSFA - Certified Surgical First Assistant Practice Test

CSFA Anatomy & Physiology 4