Deck 9: Lymphoid System

Question 1

Which lymphoid organ undergoes a drastic age-related involution (decline in function and size)?

A) Gut-associated lymphoid tissue of the gastrointestinal tract
B) Lymph node
C) Palatine tonsil
D) Spleen
E) Thymus

Answer 1

E

Question 2

Central arterioles,surrounded by masses of lymphocytes,are an identifying histologic characteristic of the:

A) Gut-associated lymphoid tissue of the digestive system
B) Lymph nodes
C) Spleen
D) Thymus
E) Tonsils

Answer 2

C

Question 3

High endothelial venules in a lymphoid organ function to:

A) Allow the entry of splenic platelets into the bloodstream
B) Attract interstitial macrophages to degenerating red blood cells,as in the spleen
C) Enable the exit of lymphocytes from the bloodstream into the tissue parenchyma
D) Establish a barrier between the bloodstream and the tissue parenchyma,as in the thymus
E) Provide a copious flow of fluid that becomes lymph

Answer 3

C

Question 4

Anchoring filaments of the lymphoid system are attached to which structures?

A) Cords of Billroth in the spleen
B) Macrophages of the red pulp of the spleen
C) The capsule of lymph nodes
D) The connective tissue surfaces of lymphatic capillaries
E) Tips of valve leaflets in lymphatic vessels

Question 5

Reticular cells originating from an embryonic epithelium are found in the:

A) Bronchiolar associated lymphoid tissue (BALT)of the respiratory system
B) Lymph nodes
C) Spleen
D) Thymus
E) Tonsils

Question 6

B-type lymphocytes are particularly abundant in:

A) Germinal centers in lymphoid nodules
B) The deep cortex of a lymph node
C) The medulla of the thymus
D) The periarteriolar lymphatic sheath (PALS)of the spleen
E) The red pulp of the spleen

Question 7

Hassall's corpuscles are an identifying histologic characteristic of the:

A) Gut-associated lymphoid tissue of the digestive system
B) Lymph nodes
C) Spleen
D) Thymus
E) Tonsils