Chapter_22[1] - Chapter 22 - The Lymphatic System and...

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Chapter 22 - The Lymphatic System and Immunity Choose the single best answer to each question. 1) The lymphatic system functions include A) reabsorbing fluid lost from the capillaries and transporting it to the blood. B) absorbing fats from the digestive system. C) defending the body against infectious disease. D) A and B are correct. E) A, B and C are correct. 2) Which of the following is NOT considered part of the lymphatic system? A) lymph B) lymphatic vessels C) yellow bone marrow D) lymph nodes E) spleen 3) Lymphatic vessels A) include capillaries that are open at both ends. B) resemble thin walled veins with extra valves in structure. C) follow the routes of arteries in the skin. D) follow the routes of veins in the abdomen and thorax. E) drain lymph into urine at the kidney. 4) Place the following in the order that lymph would travel through them from the right thigh to the blood supply: 1. cysterna chyli 2. thoracic (left lymphatic) duct 3. right lymphatic duct 4. right lumbar trunk A) 4, 1, 2, but never 3 B) 4, 1, 3, but never 2 C) 3, 1, 2, but never 4 D) 3, 1, 4, but never 2 E) 1, 3, 2, but never 4 5) Lymph A) is nearly identical to interstitial fluid in most parts of the body.
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C) flow is dependent on pressure arising from contraction of the left ventricle of the heart. D) A and B are correct. E) A, B and C are correct. 6) The thymus A) is a bilobed organ found between the heart and the thoracic vertebrae. B) grows in size and function throughout adulthood. C) contains many immature T cells in its cortex. D) contains many mature B cells in its medulla. E) contains thymic macrophages that release thymosin and other hormones. 7) Lymph nodes A) occur in superficial and deep groups along the lymphatic vessels. B) receive lymph via efferent vessels. C) contain mostly T cells in their outer cortexes. D) contain mostly B cells in their inner cortexes. E) contain only T cells in their medullae. 8) The spleen A) contains white pulp, which consists mostly of lymphocytes and macrophages. B) contains red pulp, which performs functions related to blood cells. C) is located on the inferior surface of the liver in the right hypochondriac region. D) A and B are correct. E) A, B and C are correct. 9) Lymphatic nodules A) include the tonsils and Peyer’s patches. B) are surrounded by a capsule. C) are scattered among the serous membranes of the viscera. D) A and B are correct. E) A, B and C are correct. 10) Which of the following is NOT true of the development of lymphatic tissues? A) Lymphatic vessels develop from lymph sacs, which arise from mesoderm. B) Lymph sacs develop in conjunction with veins, but most ultimately lose connection with them. C) The spleen develops from ectoderm.
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This note was uploaded on 12/07/2010 for the course BIO 2 taught by Professor Holtz during the Summer '09 term at Abraham Baldwin Agricultural College.

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Chapter_22[1] - Chapter 22 - The Lymphatic System and...

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