Question 1

Which of the following is NOT a function of the lymphatic system?

Accepted Answer

Regulates blood glucose levels

Question 2

If the lymphatic system fails to return excess interstitial fluid to the bloodstream, what condition is most likely to develop?

Accepted Answer

Edema

Question 3

Which vessel drains lymph from the right side of the head, neck, chest, and arm?

Accepted Answer

Right lymphatic duct

Question 4

What structural feature of lymphatic capillaries allows them to absorb large molecules and prevent backflow?

Accepted Answer

Overlapping endothelial cells and valves

Question 5

Which lymphatic organ is the site of T lymphocyte maturation?

Accepted Answer

Thymus

Question 6

Lymph nodes differ from lymph nodules in which of the following ways?

Accepted Answer

Lymph nodes have a capsule, lymph nodules do not

Question 7

Which of the following best describes the function of the spleen's red pulp?

Accepted Answer

Filled with RBCs, platelets, WBCs, and mostly macrophages

Question 8

Bulk flow across capillary walls is governed by which two pressure gradients?

Accepted Answer

Hydrostatic and osmotic pressure gradients

Question 9

Which mechanism assists lymph flow back to the heart?

Accepted Answer

Respiratory pump and skeletal muscle contraction

Question 10

A patient has a blockage in the thoracic duct. Which region is most likely to experience impaired lymph drainage?

Accepted Answer

Left leg

Question 11

Which of the following equations best represents the net filtration pressure ($NFP$) across a capillary wall?

Accepted Answer

$NFP = (P_c + \pi_i) - (P_i + \pi_c)$

Question 12

Which lymphatic organ is located inferior to the stomach in the lateral left upper quadrant (LUQ)?

Accepted Answer

Spleen

Question 13

Which of the following would most likely result from a congenital absence of lymphatic valves?

Accepted Answer

Backflow of lymph and peripheral edema

Question 14

Which statement about lymphatic capillaries is correct?

Accepted Answer

They are blind-ended and absorb excess interstitial fluid

Question 15

Which of the following is a primary lymphatic organ?

Accepted Answer

Thymus

Question 16

Which process is responsible for the movement of fluid from the blood capillaries into the interstitial space?

Accepted Answer

Bulk flow

Question 17

Which of the following best explains why lymphatic capillaries are important for immune function?

Accepted Answer

They allow entry of pathogens and antigens for immune surveillance

Question 18

Which lymphatic organ contains both white pulp and red pulp?

Accepted Answer

Spleen

Question 19

Which of the following is true regarding the flow of lymph?

Accepted Answer

It is aided by skeletal muscle contraction and respiratory movements

Question 20

Which of the following would most likely occur if the thoracic duct was damaged during surgery?

Accepted Answer

Impaired lymph drainage from the left side of the body and lower limbs

Lymphatic System & Immunity: Structure and Function

Study Guide - Practice Questions