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 4RQ
Summary Introduction
To determine:
The characteristics of germinal centers in lymph nodes.
Introduction:
Germinal centers in lymph nodes are found next to the lymphoid follicles. They are a part of the cortex and are closer to the afferent lymphatic vessels. All infiltrating pathogens are cleared by the network of phagocytes of both B (bone marrow) and T (thymic) lymphocytes present in various divisions of the lymph nodes.
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The 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.
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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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- Lymphatic capillaries (a) are open-ended like drinking straws, (b) have continuous tight junctions like those of the capillaries of the blood brain barrier, (c) have endothelial cells separated by flaplike minivalves that open wide, (d) have special barriers that stop cancer cells from entering, (e) all of the above.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_forwardWhich 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.arrow_forward
- Stem cells responsible for the process of lymphocytopoiesis are located in the(a) thymus and spleen. (b) lymph nodes. (c) red bone marrow. (d) a, b, and c are correct.arrow_forwardLymphatic capillaries function to transport all of the following EXCEPT Choose from the following: (A) extracellular fluid (B) lipids (C) erythrocytes (D) leukocytes (E) invading micro-organismsarrow_forwardDevelopmentally, the embryonic lymphatic vessels are most closely associated with the (a) veins, (b) arteries, (c) nerves, (d) thymus.arrow_forward
- The basic structural framework of most lymphoid organs consists of (a) areolar connective tissue, (b) hematopoietic tissue, (c) reticular connective tissue, (d) adipose tissue.arrow_forwardT lymphocytes are characteristically found in all of the following locations EXCEPT Choose one from following: (A) germinal centers (B) medullary cords (C) thymus gland (D) periphery of lymphatic folliclesarrow_forwardRed blood cells that are damaged or defective are removed from the circulation by the (a) thymus. (b) lymph nodes. (c) spleen. (d) tonsils.arrow_forward
- Lymphocytes responsible for providing cell-mediated immunity are called(a) macrophages. (b) B cells. (c) plasma cells. (d) cytotoxic T cells.arrow_forwardPhagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as (a) emigration. (b) chemotaxis. (c) adhesion. (d) perforation.arrow_forwardIdentify the incorrect statment about lymphatic system (A) Lymphatic capillaries have valves to ensure unidirctional flow (B) 72% of total blood fluid leaks out and needs to be returened each day (C) lymph is filtered at the lymph nodes (D) heutrophils are the main phagocyte found in lymph nodesarrow_forward
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