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Challenge Yourself
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1
Lymph from which of the following body regions drains into the thoracic duct?
A)right side of the thorax
B)right upper limb
C)right lower limb
D)right side of the head
2
Which type of lymphatic cell is responsible for producing antibodies?
A)macrophage
B)helper T-lymphocyte
C)plasma cell
D)NK cell
3
Which statement is false about lymphatic nodules?
A)The center has proliferating B-lymphocytes and some macrophages.
B)T-lymphocytes are located along the periphery.
C)Lymphatic nodules are completely surrounded by a connective tissue capsule.
D)Lymphatic nodules in the ileum of the small intestine are called Peyer patches.
4
What is the function of the blood-thymus barrier?
A)It protects maturing T-lymphocytes from antigens in the blood.
B)It filters the blood and starts an immune response when necessary.
C)It subdivides the thymus into a cortex and a medulla.
D)It forms thymic corpuscles.
5
Which type of lymph vessel consists solely of an endothelium and has one-way valves that allow interstitial fluid to enter?
A)lymphatic vessel
B)lymphatic capillary
C)lymphatic duct
D)lymphatic trunk
6
Which statement is true about lymph nodes?
A)Cancerous lymph nodes are swollen and tender to the touch.
B)The medulla of a lymph node contains lymphatic nodules.
C)Lymph enters the lymph node through afferent lymphatic vessels.
D)Lymphatic sinuses are located in the cortex of a lymph node only.
7
In an early Streptococcus infection of the throat, all of the following structures may swell except the
A)pharyngeal tonsil.
B)spleen.
C)cervical lymph node.
D)palatine tonsil.
8
Which of the following is a function of the white pulp of the spleen?
A)phagocytizes erythrocytes
B)serves as a blood cell reservoir
C)elicits an immune response if antigens are detected in the blood
D)serves as a site for hemopoiesis during fetal life
9
The embryonic lymph sacs go on to form the
A)thoracic duct.
B)right lymphatic duct.
C)spleen.
D)lymph nodes.
10
What change occurs to the adult lymphatic system as we get older?
A)The body produces and transports less lymph.
B)Greater numbers of B-lymphocytes are produced.
C)Helper T-lymphocytes do not respond as well to antigens.
D)The lymph nodes enlarge.





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