Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Chapter 21, Problem 10RQ
It sometimes is difficult to distinguish the different lymphoid organs from one another in histological sections. How would you tell the thymus from a lymph node? (a) Only the thymus has a cortex and medulla; (b) lymphocytes are far less densely packed in the thymus than in the lymph node; (c) the thymus contains no blood vessels; (d) only the thymus has distinct lobules and thymic corpuscles.
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Which one of the following lymphoid organs does not contain lymphoid follicles or germinal centers? (a) lymph nodes, (b) spleen, (c) thymus, (d) aggregated lymphoid nodules, (e) tonsils.
Which of the following lymphoid organs have a cortex and a medulla? (More than one choice is correct.) (a) lymph nodes, (b) spleen, (c) thymus, (d) aggregated lymphoid nodules, (e) tonsils.
The largest collection of lymphoid tissue in the body is contained in the: (a) adult spleen. (b) adult thymus. (c) bone marrow. (d) tonsils.
Chapter 21 Solutions
Human Anatomy
Ch. 21 - Prob. 1CYUCh. 21 - A sentinel lymph node is the first lymph node to...Ch. 21 - Fatty lymph, picked up by the lacteals in the...Ch. 21 - Prob. 4CYUCh. 21 - Prob. 5CYUCh. 21 - Prob. 6CYUCh. 21 - Prob. 7CYUCh. 21 - Prob. 8CYUCh. 21 - Prob. 9CYUCh. 21 - Prob. 10CYU
Ch. 21 - Prob. 11CYUCh. 21 - Lymphatic capillaries (a) are open-ended like...Ch. 21 - The basic structural framework of most lymphoid...Ch. 21 - Prob. 3RQCh. 21 - Prob. 4RQCh. 21 - Prob. 5RQCh. 21 - Prob. 6RQCh. 21 - Which of the following lymphoid organs have a...Ch. 21 - Prob. 8RQCh. 21 - Developmentally, the embryonic lymphatic vessels...Ch. 21 - It sometimes is difficult to distinguish the...Ch. 21 - In some people, the thoracic duct does not receive...Ch. 21 - Prob. 12RQCh. 21 - Prob. 13RQCh. 21 - Prob. 14RQCh. 21 - Prob. 15RQCh. 21 - Prob. 16RQCh. 21 - Prob. 17RQCh. 21 - As George was reading this chapter for the second...Ch. 21 - Prob. 19RQCh. 21 - Prob. 20RQCh. 21 - Prob. 1CRCAQCh. 21 - Prob. 2CRCAQCh. 21 - Prob. 3CRCAQCh. 21 - Mrs. Roselli has undergone a left radical...Ch. 21 - Prob. 5CRCAQCh. 21 - Simi realized she was very ill. During a recent...
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- Lymphoid stem cells that can form all types of lymphocytes occur in the:(a) bloodstream. (b) thymus. (c) red bone marrow. (d) spleen.arrow_forwardDevelopmentally, the embryonic lymphatic vessels are most closely associated with the (a) veins, (b) arteries, (c) nerves, (d) thymus.arrow_forwardThe basic structural framework of most lymphoid organs consists of (a) areolar connective tissue, (b) hematopoietic tissue, (c) reticular connective tissue, (d) adipose tissue.arrow_forward
- Which of the following is the only lymphatic organ to demonstrate AFFERENT lymphatic vessels? Choose from the follliwng: (A) tonsil (B) spleen (C) thymus (D) lymph nodearrow_forwardIndicate whether each of the following statements about the spleen is true or false. If you think a statement is false, explain why. (a) It filters antigens out of the blood. The marginal zone is rich in T cells, and the periarteriolar lymphoid sheath (PALS) is (b) rich in B cells. (c) It functions to remove old and defective red blood cells. Lymphatic vessels draining the tissue spaces enter the spleen. It contains germinal centers. (d)arrow_forwardLymphocytes that develop immunocompetence in the thymus are (a) B lymphocytes, (b) T lymphocytes.arrow_forward
- Which part of the body does the thoracic duct not drain lymph from? (a) the left side of the neck, (b) both the lower limbs, (c) both the upper limbs, (d) the left half of the head.arrow_forwardIf we regard red bone marrow as a lymphatic organ and define lymphatic organs partly by the presence of a connective tissue capsule, what could we regard as the capsule of red bone marrow?arrow_forwardThe germinal centers in lymph nodes are sites of (a) the lymph sinuses, (b) proliferating B lymphocytes, (c) T lymphocytes, (d) a and c, (e) all of the above.arrow_forward
- Why are the thymus and the spleen considered organs of the lymphatic system?arrow_forward(a) The lymphatic system is a part of the circulatory system and a vital part of the immune system. It is a network of tubes throughout the body that drains fluid (called lymph) from tissues and empties it back into the bloodstream. (i) Give a brief explanation why the lymphatic system is a one-way system, whereas the blood vascular system is a two-way system. (ii) Point out TWO (2) type of infections that may cause the lymph nodes to swell.arrow_forwardidentify the structures listed in Figurearrow_forward
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