Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 12SAQ
(a) Which anatomical characteristics ensures that the flow of lymph through a lymph node is slow? (b) Why is this desirable?
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(a) Which anatomical characteristic ensures that the flow of lymph through a lymph node is slow? (b) Why is this desirable?
(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.
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.
Chapter 19 Solutions
Anatomy & Physiology (6th Edition)
Ch. 19.1 - What is lymph? Where does it come from?Ch. 19.1 - Name two lymphatic ducts and indicate the body...Ch. 19.1 - What is the driving force for lymph movement?Ch. 19.1 - Prob. 4CYUCh. 19.2 - Prob. 5CYUCh. 19.3 - Prob. 3CYUCh. 19.3 - What is the benefit of having fewer efferent than...Ch. 19.4 - List several functions of the spleenCh. 19.5 - Prob. 9CYUCh. 19.6 - Prob. 10CYU
Ch. 19 - Lymphatic vessels (a) serve as sites for immune...Ch. 19 - Prob. 2MCCh. 19 - Entry of lymph into the lymphatic capillaries is...Ch. 19 - The structural framework of lymphoid organs is (a)...Ch. 19 - Lymph nodes are densely clustered in all of the...Ch. 19 - The germinal centers in lymph nodes are largely...Ch. 19 - Prob. 7MCCh. 19 - The lymphoid organ that functions primarily during...Ch. 19 - Collections of lymphoid tissue (MALT) that guard...Ch. 19 - Prob. 10SAQCh. 19 - Prob. 11SAQCh. 19 - (a) Which anatomical characteristics ensures that...Ch. 19 - There are no lymphatic arteries. Why isnt this a...Ch. 19 - Prob. 1CCSCh. 19 - Prob. 2CCSCh. 19 - Prob. 3CCSCh. 19 - Prob. 4CCS
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- Asap Lymph enters a lymph node via afferent vessels, circulates through lymph sinuses, and then exits via efferent vessels. What is the physiological significance of each lymph node having fewer efferent vessels than afferent vessels?arrow_forward(a)Define formed elements and list their three major categories. (b) Which is least numerous?(c ) Which comprise(s) the buffy coat in a hematocrit tube?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_forward
- Lymph collected from the lower abdomen, pelvis, and lower limbs is carried by the: (a) right lymphatic duct. (b) inguinal duct. (c) thoracic duct. (d) aorta.arrow_forward(a) Describe the steps of erythrocyte formation in the bone marrow.(b) What name is given to the immature type of red blood cell that is newly released into the circulation?arrow_forwardEven though the lymphatic system is a component of the circulatory system, why is the term circulation not the most appropriate term to describe the flow of lymph? How would you describe the flow? Explain how lymph is formed. What would be the impact on lymph formation if the osmotic force at the venous end of the capillary was more successful at recovering fluid lost at the arterial end?arrow_forward
- Would you please help me make a flow chart listing the sequence of the movement of lymph from tissue in the right big toe back to the venous blood?arrow_forwardStem cells responsible for the process of lymphopoiesis are located in the (a) thymus and spleen. (b) lymph nodes. (c) red bone marrow. (d) a, b, and c are correct.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
- 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_forwardDirectly after fluid leaks out a vessel into the surrounding tissue (due to ______ blood pressure) it gets a name change from plasma to ______ fill in the blank (A) low, interstitial fluid (B) high, lymph (C) high, interstitial fluid (D) low, lympharrow_forwardMatch the names of the blood cells in column B with their descriptions in column A. Some names are used more than once. Column A Column B(1) destroys parasites (a) erythrocyte(2) has two types of granules (b) neutrophil(3) does not use diapedesis (c) eosinophil(4) stops the allergic response (d) basophil (e) lymphocyte (f) monocyte (5) the only cell that is not spherical (6) granulocyte that phagocytizes bacteria (7) the largest blood cell (8) granulocyte with the smallest granules…arrow_forward
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