Human Anatomy & Physiology (9th Edition)

Published by Pearson
ISBN 10: 0321743261
ISBN 13: 978-0-32174-326-8

Chapter 20 - The Lymphatic System and Lymphoid Organs and Tissues - Review Questions - Page 762: 11

Answer

See Explanation

Work Step by Step

Lymph Nodes 1- Lymph nodes are multiple & present in groups all over the body. 2- they filter the lymph. 3- they have many afferent & efferent lymph vessels. 4- covered with fascia. 5- capsule is thin & not adherent. 6- Trabeculae are thin, short & arise from the capsule. 7- Lymphatic nodules are arranged into cortex & medulla. 8- in the cortex there are the Lymphatic nodule with clear germinal centres but with no central arterioles. 9- presence of cortical & medullary lymphatic sinuses. 10- presence of medullary lymphatic cords. 11- Cells: are mainly lymphocytes, plasma cells & macrophages. 12- Functions : humoral & cell-mediated immunological response. Spleen 1- the spleen is a single organ present in the abdomen. 2- it filters the blood. 3- it has few lymph vessels in the capsule & trabeculae. 4- covered with Peritoneum. 5- Capsule is partially thick, adherent & rich in smooth muscles. 6- Trabeculae are thick, long & arise from the hilum & capsule. 7- Lymphatic tissues are the white & the red pulps ( not arranged in cortex & medulla ). 8- the white pulp are scattered in the spleen containing central arterioles but their germinal centres are not clear. 9- presence of Billorth cords or red pulps. 10- Cells : are mainly RBCs, Leucocytes, plasma cells & macrophages. 11- Function : mainly humoral immunological response.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.