What vessels pick up excess extracellular fluid in the interstitial space and return it to circulation?
A) lymphatic vessels
B) jugular veins
C) coronary arteries
D) pulmonary veins - Answers lymphatic vessels
The lymph ducts in the thoracic cavity drain into the:
A) junction of the internal jugular vein and subclavian vein
B) junction of the brachiocephalic vein and the superior vena cava
C) external jugular veins
D) inferior vena cava - Answers junction of the internal jugular vein and subclavian vein
Which lymph trunks receive lymph from the upper limbs?
A) bronchomediastinal trunks
B) jugular trunks
C) intestinal trunks
D) subclavian trunks - Answers subclavian trunks
What makes lymphatic vessels similar to the venous circuit of the cardiovascular system?
A) both vessels have a thick tunica media
B) both vessels operate under high pressure
C) both vessels have valves
D) both vessels feed into capillary beds - Answers both vessels have valves
An accumulation of excess interstitial fluid is known as:
A) lysis
B) edema
C) infection
,D) crenation - Answers edema
What is the main role of macrophages in the lymphatic tissues?
A) structure and support
B) phagocytosis
C) form collagen fibers
D) form structures of neurons - Answers phagocytosis
Mucosa-associated lymphatic tissues (MALT) include the:
A) liver
B) spleen
C) tonsils
D) kidneys - Answers tonsils
What type of mucosa-associated lymphatic tissue (MALT) is located in the ileum (last portion)
of the small intestine?
A) tonsils
B) adenoid
C) appendix
D) Peyer's patches - Answers Peyer's patches
What MALT traps pathogens entering the nasal and oral cavities?
A) lymph nodes
B) tonsils
C) appendix
D) Peyer's patches - Answers tonsils
A sinus infection would most likely cause swollen:
A) inguinal lymph nodes
B) cervical lymph nodes
C) mesenteric lymph nodes
, D) axially lymph nodes - Answers cervical lymph nodes
What is the function of the red pulp of the spleen?
A) filter pathogens from lymph
B) house macrophages that destroy old erythrocytes
C) filter pathogens from the blood
D) house leukocytes and dendritic cells - Answers house macrophages that destroy old
erythrocytes
Adaptive, or specific, immunity consists of antimicrobial proteins and certain cells that respond
quickly to pathogens within the first 12 hours after exposure. - Answers false
Compared to blood capillaries, lymphatic capillaries:
A) are less permeable
B) are blind-ended
C) are not made of endothelial cells
D) contain smooth muscle - Answers are blind-ended
Which of the following is NOT one of the major cell types of lymphoid tissue?
A) fibroblasts
B) lymphocytes
C) dendritic cells
D) reticular cells - Answers fibroblasts
Which of the following is NOT one of the functions of the lymphatic system?
A) regulation of interstitial fluid volume
B) immunity
C) transport of gases
D) absorption of dietary fats - Answers transport of gases
Which of the following is NOT a surface barrier serving as the first line of defense?
A) antibody