Question 1

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

Accepted Answer

Transport oxygen from the lungs to the tissues

Question 2

Lymphatic capillaries differ from blood capillaries in which of the following ways?

Accepted Answer

They have overlapping endothelial cells that act as one-way flaps

Question 3

Movement of lymph through lymphatic capillaries is primarily due to which physical force?

Accepted Answer

Hydrostatic pressure of the interstitial fluid

Question 4

Which lymphatic trunk is responsible for draining lymph fluid from the intestines and abdominal cavity?

Accepted Answer

Intestinal trunk

Question 5

A patient has a blockage in the thoracic duct. Which of the following consequences is most likely?

Accepted Answer

Lymph from most of the body cannot return to the venous circulation

Question 6

Which of the following is a primary lymphoid structure?

Accepted Answer

Thymus

Question 7

The red bone marrow is responsible for which process?

Accepted Answer

Hematopoiesis: production of blood cells

Question 8

Which of the following best describes the function of the thymus?

Accepted Answer

Site of T-lymphocyte differentiation and maturation

Question 9

Which lymphoid structure is divided into red pulp and white pulp, and what are their respective functions?

Accepted Answer

Spleen; red pulp stores or breaks down red blood cells, white pulp is involved in immune response

Question 10

Which of the following is a function unique to the spleen among secondary lymphoid structures?

Accepted Answer

Serves as a reservoir for erythrocytes and platelets

Question 11

Afferent lymphatic vessels are responsible for which of the following?

Accepted Answer

Bringing lymph into the lymph node

Question 12

Which tonsil is located along the posterior 1/3 of the tongue?

Accepted Answer

Lingual tonsil

Question 13

Which of the following mechanisms does NOT contribute to the movement of lymph in the lymphatic system?

Accepted Answer

Contraction of cardiac muscle

Question 14

Which formula best represents the relationship between hydrostatic pressure ($P_{hydro}$), osmotic pressure ($P_{osm}$), and net filtration pressure ($NFP$) in capillary exchange?

Accepted Answer

$NFP = P_{hydro} - P_{osm}$

Question 15

A patient has an enlarged spleen (splenomegaly) due to increased breakdown of erythrocytes. Which region of the spleen is most likely responsible for this function?

Accepted Answer

Red pulp

Question 16

Which of the following is TRUE regarding MALT (mucosa-associated lymphatic tissue)?

Accepted Answer

It consists of lymphatic nodules within the mucosa of the GI, respiratory, genital, and urinary tracts

Question 17

Which lymphatic duct drains lymph from the right side of the head, neck, and right upper limb?

Accepted Answer

Right lymphatic duct

Question 18

Which of the following clusters of lymph nodes would most likely be enlarged in a patient with a throat infection?

Accepted Answer

Cervical lymph nodes

Question 19

Which of the following is the correct sequence for lymph flow from tissues back to the circulatory system?

Accepted Answer

Lymphatic capillaries → lymphatic vessels → lymphatic trunks → lymphatic ducts

Question 20

Which of the following best explains why lymphatic capillaries are effective at absorbing fats in the small intestine?

Accepted Answer

They contain specialized lymph capillaries called lacteals that absorb lipid-soluble vitamins and fats

Lymphatic System: Structure and Function – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards