SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Question
Chapter 22, Problem 2CT
Summary Introduction
To determine:
The observation of an experiment in which thymus is detached from an animal after its birth.
Introduction:
The lymphatic system is a part of an immune system that is made up of hundreds of lymph nodes in the human body. The lymphatic system is located deep inside the body, such as near the lungs and heart.
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Students have asked these similar questions
If the thymus of an experimental animal is removed immediatelyafter its birth, the animal exhibits the following characteristics:(a) an increased susceptibility to infections, (b) decreased numbers oflymphocytes in lymphatic tissue, and (c) a greatly decreased ability toreject grafts. Explain these observations.
If the thymus of an adult experimental animal is removed, the following observations can be made: (a) No immediate effect occurs, and (b) after 1 year, decreases occur in the number of lymphocytes in the blood, the ability to reject grafts, and the ability to produce antibodies. Explain these observations.
For each of the following situations, indicate which type(s) of lymphocyte(s), if any, would
be expected to proliferate rapidly in lymph nodes and where in the nodes they would do so.
Nomal mouse with a viral infection
(a)
(b)
(c)
Neonatally thymectomized mouse immunized with a protein antigen
Neonatally thymectomized mouse immunized with the thymus-independent antigen
bacterial lipopolysaccharide (LPS), which does not require the aid of THcells to
activate B cells.
Chapter 22 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 22.1 - Prob. 1AYPCh. 22.2 - Name the parts of the lymphatic system.Ch. 22.2 - How is lympn formed?Ch. 22.2 - Describe the structure of a lymphatic capillary....Ch. 22.2 - What is the function of valves in lymphatic...Ch. 22.2 - Prob. 6AYPCh. 22.2 - Prob. 7AYPCh. 22.2 - Prob. 8AYPCh. 22.2 - Prob. 9AYPCh. 22.2 - Prob. 10AYP
Ch. 22.2 - Describe the structure, function, and location of...Ch. 22.2 - Where are lymph nodes found? Describe the parts of...Ch. 22.2 - Prob. 13AYPCh. 22.2 - Prob. 14AYPCh. 22.2 - Prob. 15AYPCh. 22.2 - Prob. 16AYPCh. 22.3 - Prob. 17AYPCh. 22.3 - Why do specificity and memory relate to adaptive...Ch. 22.3 - What are the differences between innate immunity...Ch. 22.4 - List the three components of innate immunity.Ch. 22.4 - Prob. 21AYPCh. 22.4 - Prob. 22AYPCh. 22.4 - Prob. 23AYPCh. 22.4 - Prob. 24AYPCh. 22.4 - Prob. 25AYPCh. 22.4 - Prob. 26AYPCh. 22.4 - What effects are produced by the chemicals...Ch. 22.4 - Prob. 28AYPCh. 22.4 - Prob. 29AYPCh. 22.4 - Describe the events that take place during an...Ch. 22.4 - Prob. 31AYPCh. 22.5 - Prob. 32AYPCh. 22.5 - Prob. 33AYPCh. 22.5 - What are the two types of adaptive immunity?Ch. 22.5 - Prob. 35AYPCh. 22.5 - Prob. 36AYPCh. 22.5 - What are the primary lymphatic organs? What are...Ch. 22.5 - Prob. 38AYPCh. 22.5 - Prob. 39AYPCh. 22.5 - Prob. 40AYPCh. 22.5 - Prob. 41AYPCh. 22.5 - Prob. 42AYPCh. 22.5 - Prob. 43AYPCh. 22.5 - Prob. 44AYPCh. 22.5 - Prob. 45AYPCh. 22.5 - Prob. 46AYPCh. 22.5 - Prob. 47AYPCh. 22.5 - What are the functions of the variable and...Ch. 22.5 - Prob. 49AYPCh. 22.5 - Prob. 50AYPCh. 22.5 - Prob. 51AYPCh. 22.5 - Prob. 52AYPCh. 22.5 - Prob. 53AYPCh. 22.5 - Prob. 54AYPCh. 22.5 - Prob. 55AYPCh. 22.5 - Prob. 56AYPCh. 22.6 - Prob. 57AYPCh. 22.6 - Prob. 58AYPCh. 22.6 - Prob. 59AYPCh. 22.6 - Prob. 60AYPCh. 22.7 - Prob. 61AYPCh. 22.8 - Prob. 62AYPCh. 22.9 - What effect does aging have on the major functions...Ch. 22.9 - Prob. 64AYPCh. 22 - The lymphatic system a. removes excess fluid from...Ch. 22 - Which of the following statements is correct? a....Ch. 22 - Prob. 3RACCh. 22 - Prob. 4RACCh. 22 - Prob. 5RACCh. 22 - Prob. 6RACCh. 22 - Prob. 7RACCh. 22 - Prob. 8RACCh. 22 - Macrophages a. are large, phagocytic cells that...Ch. 22 - Which of these cells in the most important in the...Ch. 22 - Prob. 11RACCh. 22 - Antigens a. are foreign substances introduced into...Ch. 22 - Prob. 13RACCh. 22 - Prob. 14RACCh. 22 - Prob. 15RACCh. 22 - Which of these participates in costimulation? a....Ch. 22 - Prob. 17RACCh. 22 - Prob. 18RACCh. 22 - Prob. 19RACCh. 22 - Prob. 20RACCh. 22 - Prob. 21RACCh. 22 - Prob. 22RACCh. 22 - Prob. 23RACCh. 22 - Prob. 24RACCh. 22 - Prob. 25RACCh. 22 - A patient is suffering from edema in the...Ch. 22 - Prob. 2CTCh. 22 - If the thymus of an adult experimental animal is...Ch. 22 - Prob. 4CTCh. 22 - Prob. 5CTCh. 22 - Prob. 6CTCh. 22 - Prob. 7CTCh. 22 - Prob. 8CTCh. 22 - Prob. 9CTCh. 22 - Upon first exposure to an antigen, a sequence of...
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Similar questions
- 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.arrow_forwardWhich of the following is NOT true about T cells?(a) T cells develop from lymphoid stem cells in the bonemarrow and mature in the thymus.(b) Cell-mediated immunity is primarily carried out by Tcells.(c) Subsequent differentiation of T cells produces cytotoxic(killer) T cells, delayed-hypersensitivity T cells, helper Tcells, and regulatory T cells.(d) Natural killer cells (NK) are exclusively differentiated Tcells.(e) T cells act in situations where antigens are embeddedin cell membranes or are inside host cells and thus areinaccessible to antibodies.arrow_forwardDiGeorge syndrome is the result of the absence or immaturity of the thymus gland at birth. This would result in a deficiency in what cell type? O 1) mast cells O 2) T cells O 3) B cells 4) natural killer cellsarrow_forward
- The nurse is conducting a class on drugs for malignant tumors for a group of new oncology staff members. Which best describes the action of interferons in the management of malignant tumors? a )Interferons increase the production of specific anticancer enzymes.b) Interferons have antiviral and antitumor properties and strengthen the immune system.c) Interferons stimulate the production and activation of T lymphocytes and cytotoxic T cells.d )Interferons help improve the cell-killing action of T cells because they are retrieved from healthy donorsarrow_forward1. The laboratory scientist who reviews the marrow reports that the bone marrow is overridden with plasma cells—so much so that clusters of plasma cells can be seen. What is the function of plasma cells? Explain with no more than 3-6 sentences. A). To present foreign antigens to immune cells B). To directly attack foreign cells when foreign antigens are recognized. C). To phagocytize cells with foreign antigens. D). To produce immunoglobulins specific to foreign antigens presented by T helper cells. 2. Immunoglobulins are made mainly of what substance? Explain. A). Carbohydrate B). Lipid C). Proteinarrow_forwardT cells can differentiate into 5 different subsets of helper T cells. Answer the following questions for TH1 cells: A) In general, list three unique factors that differentiate the TH1 subset from the other subsets. B) For each of those factors identified in A, provide one specific example that applies to TH1 cells. C) What type of pathogens are targeted by the TH1 cells?arrow_forward
- Hemolytic disease of the newborn can result if, (a) the mother is Rh-positive and the father is Rh-negative. (b) both the father and the mother are Rh-negative. (c) both the father and the mother are Rh-positive. (d) an Rh-negative woman carries an Rh-positive fetus.arrow_forwardSutures() A) should be left in the skin for a minimum of 2 weeks B) often need to be removed with local anaesthetic C) must be tied tightly so that arterial inflow into tissues is not possible D) are left in situ for a longer time in patients who are immunosuppressed E) of all types must eventually be removedarrow_forwardIn 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_forward
- T lymphocytes are characteristically found in all of the following locations EXCEPT Choose one from following: (A) germinal centers (B) medullary cords (C) thymus gland (D) periphery of lymphatic folliclesarrow_forwardA person shows unwelcome immunogenic reactions while exposed to certain substances.(a) Name this condition.(b) What common term is given to the substances responsible for this condition?(c) Name the cells and the chemical substances released which cause such reactions.arrow_forwardWhich structure is depicted in the following image? A) thymus gland B) white blood cells C) jugular lymphatic trunks D) lumbar trunksarrow_forward
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