HUMAN ANATOMY PACKAGE 2015
15th Edition
ISBN: 9781323100561
Author: Martini
Publisher: PEARSON C
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Chapter 23, Problem 1RC
Summary Introduction
Introduction:
The thymus is one of the lymphatic organs that produces T (thymus-dependent) cells. It is known as the primary lymphatic organ, wherein the lymphocytes are made and become matured. It comprises the reticular cells, thymic corpuscles, and developing T cells. It releases thymosin, a hormone that is involved in the development of the T cells.
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Chapter 23 Solutions
HUMAN ANATOMY PACKAGE 2015
Ch. 23 - Prob. 1RFTCh. 23 - Match each numbered item with the most closely...Ch. 23 - Prob. 3RFTCh. 23 - Prob. 4RFTCh. 23 - Prob. 5RFTCh. 23 - Prob. 6RFTCh. 23 - Prob. 7RFTCh. 23 - Match each numbered item with the most closely...Ch. 23 - Prob. 9RFTCh. 23 - Prob. 10RFT
Ch. 23 - Identify the structures of the lymphatic system in...Ch. 23 - The lymphatic system is composed of (a) lymphatic...Ch. 23 - Prob. 13RFTCh. 23 - 14. Most of the lymph returns to the venous...Ch. 23 - Prob. 15RFTCh. 23 - Prob. 16RFTCh. 23 - Prob. 17RFTCh. 23 - Prob. 18RFTCh. 23 - Prob. 19RFTCh. 23 - Prob. 20RFTCh. 23 - Prob. 21RFTCh. 23 - Prob. 1RCCh. 23 - Prob. 2RCCh. 23 - Blocking the antigen receptors on the surface of...Ch. 23 - Prob. 4RCCh. 23 - 5. What major artery and vein pass through the...Ch. 23 - Prob. 6RCCh. 23 - Prob. 7RCCh. 23 - Prob. 8RCCh. 23 - 9. What occurs in secondary lymphatic structures?
Ch. 23 - 10. Where are aggregated lymphoid nodules, also...Ch. 23 - Prob. 1CTCh. 23 - Prob. 2CTCh. 23 - Prob. 3CT
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- Phagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as (a) emigration. (b) chemotaxis. (c) adhesion. (d) perforation.arrow_forwardPhagocytes move through capillary walls by squeezing between adjacent endothelial cells, a process known as (a) diapedesis. (b) chemotaxis. (c) adhesion. (d) perforation.arrow_forwardLymphoid stem cells that can form all types of lymphocytes occur in the:(a) bloodstream. (b) thymus. (c) red bone marrow. (d) spleen.arrow_forward
- Choose the combination of answers that most accurately completes the statement. ................ interferon, produced by T lymphocytes, activates cells called .................and is involved in destroying viruses. a. Gamma, fi broblasts c. Alpha, natural killer cells b. Beta, lymphocytes d. Beta, fi broblastsarrow_forwardLymphocytes that develop immunocompetence in the thymus are (a) B lymphocytes, (b) T lymphocytes.arrow_forwardIt 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.arrow_forward
- Which structure is depicted in the following image? A) thymus gland B) white blood cells C) jugular lymphatic trunks D) lumbar trunksarrow_forwardWhich statement best describes the difference between responses of effector B cells (plasma cells) and those of cytotoxic T cells? (A) B cells confer active immunity;cytotoxic T cells confer passive immunity. (B) B cells respond the first time a pathogen is present; cytotoxic T cells respond subsequent times. (C) B cells secrete antibodies against a pathogen; cytotoxic T cells kill pathogen-infected host cells. (D) B cells carry out the cell-mediated response; cytotoxic T cells carry out the humoral response.arrow_forwardCD4 markers are associated with, (a) cytotoxic cells. (b) regulatory cells. (c) helper T cells. (d) a, b, and c.arrow_forward
- In a normal individual, a T cell that interacts with a self-antigen in the thymus will more than likely undergo what process (which answer is best)? A) apoptosis B) release granules C) activation D) extravasation E) anergyarrow_forwardInterferons are considered as ______ signals IL-2 is considered as ________ signals IL-1 is considered as ________ signals a) paracrine b) exocrine c) endocrine d) autocrinearrow_forwardWhich of the following T cells would survive education in the thymus? (a) one that recognizes neither MHC nor self-antigen, (b) one that recognizes both MHC and self-antigen, (c) one that recognizes MHC but not self-antigen, (d) one that recognizes self-antigen but not MHC.arrow_forward
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