A) They contain strands of lymphatic cells supported by medullary cords.
B) They are drained by afferent lymphatic vessels.
C) They contain phagocytic cells.
D) They filter lymph.
E) None of the choices is correct.
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A) The central portion of a lymphatic nodule is called the germinal center.
B) The tonsils are clusters of lymphatic nodules.
C) The cells and matrix of a lymphatic nodule are enclosed within a thick connective tissue capsule.
D) B-lymphocytes are located at the center of a nodule,whereas T-lymphocytes lie outside the center.
E) Lymphatic nodules filter and attack antigens.
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A) It is a bilobed organ located in the mediastinum.
B) It is fully encapsulated by connective tissue.
C) Each thymic lobe is subdivided into lobules.
D) It reaches its maximum size at puberty,then regresses.
E) Its thymic corpuscles are the site of T-lymphocyte maturation.
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A) 1
B) 4
C) 5
D) 9
E) 10
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A) Recognize particular antigens
B) Produce antibodies
C) Initiate mitosis to generate memory lymphocytes
D) Monitor pH of interstitial fluids
E) Bind to other lymphocytes to attack pathogens
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A) cannot be discerned structurally from cardiovascular system capillaries.
B) originate as closed-ended tubes associated with blood capillary networks.
C) filter lymph.
D) concentrate lymph prior to passing it to larger lymphatic vessels.
E) include layers of smooth muscle for peristalsis.
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A) are secreted in response to stimulation by activating hormones from the pituitary gland.
B) stimulate T-lymphocyte maturation and differentiation.
C) are produced by the cortical lymphocytes.
D) are stored in thymic corpuscles prior to release.
E) stimulate the activity of nurse cells.
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A) Thymus gland and lymph nodes
B) Spleen and lymph nodes
C) Lymph nodes
D) Spleen
E) Thymus gland
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A) becomes less efficient at absorbing dietary lipids.
B) ceases to transport lymph.
C) produces an increasing number and variety of B-lymphocytes.
D) is less responsive to antigens.
E) All of the choices are correct.
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A) a,b,c,d,e,f
B) a,b,c,e,f
C) b,c,e
D) b,c,d,e,f
E) b,c,d,e
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A) abdomen.
B) left leg.
C) right arm.
D) right foot.
E) left shoulder.
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A) Lymphatic nodule
B) Thymus gland
C) Cisterna chyli
D) Spleen
E) Adenoid
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A) Capillaries - ducts - trunks - vessels
B) Ducts - capillaries - vessels - trunks
C) Vessels - capillaries - trunks - ducts
D) Ducts - vessels - capillaries - trunks
E) Capillaries - vessels - trunks - ducts
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A) They initiate replication of macrophages.
B) They conduct signals between activated T-lymphocytes to accelerate the immune response.
C) They collect antigens and present them to T-lymphocytes.
D) They secrete lymphatic hormones to stimulate adjacent lymph nodes.
E) They absorb fluid when infected,causing the lymph nodes to swell and become tender to the touch.
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A) B-lymphocytes.
B) T-lymphocytes.
C) B-lymphocytes and T-lymphocytes.
D) B-lymphocytes,T-lymphocytes,and NK cells.
E) B-lymphocytes,T-lymphocytes,and monocytes.
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A) It has an outer cortex and inner medulla.
B) It is divided into sections by capsular extensions called trabeculae.
C) Its white pulp consists of lymphatic cells.
D) It stores erythrocytes.
E) Its blood is supplied by the splenic artery and drained by the splenic vein.
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