NBSTSA Anatomy & Physiology for Surgical Technology 5

Question 1

Which ligament connects the liver to the anterior abdominal wall and contains the remnant of the umbilical vein?

Accepted Answer

Falciform ligament

Answer

The falciform ligament attaches the liver to the anterior abdominal wall and diaphragm and contains the ligamentum teres, which is the fibrous remnant of the umbilical vein.

Question 2

Regarding the brachial plexus, which nerve root injury would cause 'wrist drop' by paralyzing the wrist extensors?

Accepted Answer

Radial nerve (C5–C8, T1)

Answer

The radial nerve innervates the extensor compartment of the forearm; injury to it results in inability to extend the wrist, producing the characteristic wrist drop deformity.

Question 3

Which valve is located between the right ventricle and the pulmonary artery?

Accepted Answer

Pulmonic (pulmonary) semilunar valve

Answer

The pulmonic semilunar valve prevents backflow of blood from the pulmonary artery into the right ventricle during diastole.

Question 4

The thoracic duct, the largest lymphatic vessel, empties lymph into which venous junction?

Accepted Answer

Left subclavian and left internal jugular vein junction

Answer

The thoracic duct drains the majority of the body's lymph and terminates at the junction of the left subclavian and left internal jugular veins (left venous angle).

Question 5

During a thyroidectomy, which parathyroid finding would most concern the surgical team regarding postoperative hypocalcemia?

Accepted Answer

Inadvertent removal of all four parathyroid glands

Answer

The parathyroid glands regulate calcium homeostasis; their accidental removal leads to postoperative hypocalcemia, causing tetany and potentially laryngospasm.

NBSTSA - National Board of Surgical Technology and Surgical Assisting Practice Test

NBSTSA - National Board of Surgical Technology and Surgical Assisting Practice Test

NBSTSA Anatomy & Physiology for Surgical Technology 5