ANATOMY & PHYSIOLOGY: AN INTEGRATIVE APP
3rd Edition
ISBN: 9781266163654
Author: McKinley
Publisher: MCG
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Textbook Question
Chapter 21, Problem 15DYB
Describe how the thymus’s anatomy changes as we age.
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Describe the main function of the thymus, and explain howthe blood-thymus barrier supports this function.
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Chapter 21 Solutions
ANATOMY & PHYSIOLOGY: AN INTEGRATIVE APP
Ch. 21.1 - Prob. 1LOCh. 21.1 - Prob. 2LOCh. 21.1 - Prob. 3LOCh. 21.1 - What substances typically are absorbed from the...Ch. 21.1 - Prob. 2WDLCh. 21.1 - Prob. 4LOCh. 21.1 - Prob. 5LOCh. 21.1 - Prob. 6LOCh. 21.1 - Prob. 1WDTCh. 21.1 - Prob. 3WDL
Ch. 21.1 - Which major body regions drain lymph to the right...Ch. 21.2 - Prob. 7LOCh. 21.2 - How are primary lymphatic structures and secondary...Ch. 21.3 - Prob. 8LOCh. 21.3 - Prob. 9LOCh. 21.3 - Why is red bone marrow considered a primary...Ch. 21.3 - Prob. 10LOCh. 21.3 - Prob. 7WDLCh. 21.4 - Prob. 11LOCh. 21.4 - Prob. 12LOCh. 21.4 - Prob. 8WDLCh. 21.4 - Prob. 13LOCh. 21.4 - Prob. 14LOCh. 21.4 - Prob. 15LOCh. 21.4 - Prob. 2WDTCh. 21.4 - What are the general functions of the spleen?...Ch. 21.4 - Prob. 10WDLCh. 21.4 - Prob. 16LOCh. 21.4 - Prob. 11WDLCh. 21.4 - Prob. 17LOCh. 21.4 - LEARNING OBJECTIVE
18. Compare the locations of...Ch. 21.4 - What is the function of MALT in the mucosal...Ch. 21 - Prob. 1DYBCh. 21 - _____ 2. Lymph is drained into the thoracic duct...Ch. 21 - _____ 3. The spleen is a secondary lymphatic...Ch. 21 - Prob. 4DYBCh. 21 - _____ 5. Which type of lymph vessel consists...Ch. 21 - _____ 6. Which statement is accurate about lymph...Ch. 21 - In an early Streptococcus infection of the throat,...Ch. 21 - _____ 8. The lymphatic trunk that drains lymph...Ch. 21 - _____ 9. Aged erythrocytes are removed from...Ch. 21 - _____ 10. Interstitial fluid that is absorbed into...Ch. 21 - Prob. 11DYBCh. 21 - Prob. 12DYBCh. 21 - Prob. 13DYBCh. 21 - Which body regions have their lymph drained to the...Ch. 21 - Describe how the thymuss anatomy changes as we...Ch. 21 - Prob. 16DYBCh. 21 - Compare and contrast the red and white pulp of the...Ch. 21 - Describe the specific locations of the tonsils.Ch. 21 - Describe the location and function of diffuse...Ch. 21 - Prob. 20DYBCh. 21 - Prob. 1CALCh. 21 - A child born without his thymus would not have...Ch. 21 - Prob. 3CALCh. 21 - Prob. 4CALCh. 21 - Prob. 5CALCh. 21 - Prob. 1CSLCh. 21 - Jordan has an enlarged lymph node along the side...Ch. 21 - Prob. 3CSL
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- T cells mature in the thymus. Where do B cells mature?arrow_forwardthe three type of cells in thymus are macrophages, thymocytes, epithelial reticular cells macrophages ,epithelial reticular cells only hepatocytes goblet cells entero endocrine cellsarrow_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_forward
- In the absence of thymus, where does the maturation of t cells occur ?arrow_forwardWhy is injecting a substance into the skin like injecting it intothe lymphatic system?arrow_forwardExplain the significance of the role of the thymus gland in destroying I cells that would otherwise react to 'self' body proteins.arrow_forward
- If an individual failed to develop a thymus because of a genetic defect, what would happen to the immune responses mediated by antibodies and those mediated by cytotoxic T cells? Hint: Think how helper T cells and B cells are functionally related,arrow_forwardIdentify the general activities of phagocytes.arrow_forwardWhich organ produces a hormone that promotes maturation of T cells?arrow_forward
- Jenny has recently been feeling very tired and weak. Her immune function deteriorates, as evidenced by her increased frequency of becoming ill.Suggestions for a possible health problem Jenny was having, as well as a diet to help her get better.arrow_forwardWill has just been diagnosed with melanoma on the anteromedial surface of his thigh. Melanoma is the most dangerous form of skin cancer, in large part because it tends to spread through the body (metastasize) fairly quickly. To determine if Will’s cancer has metastasized, Will’s doctor takes a sample of tissue from his lymph nodes and looks for the presence of cancer cells. If cancer cells are found in the lymph nodes, Will may have some lymph nodes surgically removed. Will’s doctor warns him that he may experience uncomfortable swelling in his leg if this happens A) Explain why Will’s doctor is looking at the inguinal lymph nodes first to determine if the melanoma has spread. (A complete answer will include an explanation of why the ymph nodes and why these lymph nodes in particular.) B) Use what you’ve learned about the lymphatic system to explain why removal of the lymph nodes may cause swelling in Will’s leg.arrow_forwardExplain what cytokines are. An interferon is a cytokine. Explain what interferons do.arrow_forward
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