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If you dissected a fetal pig or a young cat, what difference would you expect in the thymus compared to the adult?

Body Structures & Functions Updated

13th Edition

ISBN:9780357191606

Author:Scott

Publisher:Scott

Chapter15: The Lymphatic And Immune Systems

Section: Chapter Questions

Problem 3RQ

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If you dissected a fetal pig or a young cat, what difference would you expect in the thymus compared to the adult?

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It 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.
What is the most likely cause of the patient's swollen tonsils? A) Her intense cough caused rupture of the tonsils, and swelling is part of the normal wound-healing process. B) Tonsils consist of lymphatic tissue, and became swollen by filtering out microbes and their toxic products. C) She is dehydrated from poor fluid intake, so the tonsils are retaining fluid. D) Tonsils are sensitive to stimulation, so they became swollen from her constant coughing.
Although you might consider this image to be a histology image of a tonsil, you would not identify it as such due to the inability to visualize which of the following? Choose from the following: (A) epithelium (B) smooth muscle (C) crypts (D) lymphatic follicles
What is the role of the tonsils
Compare and contrast the morphology of the tissue slides of tonsils and the infant thymus.(i) Describe 2 ways that they are similar in structure and 2 ways that they are different in structure? (ii) On what morphological feature would you determine that tonsils are secondary lymphoid organs?
Which statement regarding the thymus is true? (a) It is situated in the left upper angle of the abdomen. (b) It resembles the shape of the kidneys. (c) It starts atrophying in late adolescence. (d) It is a part of MALT.
A mother calls the clinic to ask what medication to give her 5-year-old child for a fever during a bout of chickenpox. The nurse’s best response would be: a )“Your child is 5 years old, so it would be okay to use children’s aspirin to treat his fever.”b )“Start with acetaminophen or ibuprofen, but if these do not work, then you can try aspirin.”c )“You can use children’s dosages of acetaminophen or ibuprofen, but aspirin is not recommended.”d )“It is best to wait to let the fever break on its own without medication.”
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14) The thymus gland is located in the left side of the upper abdoment. A) true B) false
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Which one of the following lymphoid organs does not contain lymphoid follicles or germinal centers? (a) lymph nodes, (b) spleen, (c) thymus, (d) aggregated lymphoid nodules, (e) tonsils.