Anatomy Exam Anatomy Lymphatic System

Question 1

Where does the thoracic duct empty into the venous system?

Accepted Answer

Left subclavian–internal jugular junction

Answer

The thoracic duct empties at the junction of the left subclavian and left internal jugular veins (left venous angle).

Question 2

Which is the largest lymphoid organ in the body?

Accepted Answer

Spleen

Answer

The spleen is the largest lymphoid organ, filtering blood and housing lymphocytes in white pulp.

Question 3

What is the primary function of lymphatic capillaries?

Accepted Answer

Collect interstitial fluid and return it to the bloodstream

Answer

Lymphatic capillaries collect excess interstitial fluid, proteins, and lipids and channel them back to the venous circulation.

Question 4

Which zone of a lymph node contains primarily B lymphocytes?

Accepted Answer

Cortex (germinal centers)

Answer

The outer cortex, especially the germinal centers of lymphoid follicles, contains primarily B lymphocytes.

Question 5

The right lymphatic duct drains lymph from which regions?

Accepted Answer

Right side of head/neck, right arm, and right thorax

Answer

The right lymphatic duct drains the right side of the head and neck, right upper extremity, and right thoracic cavity.

Anatomy Exam Practice Test