Multiple Choice
In the context of primary lymphoid organs, the thymus gland secretes which hormone involved in T-lymphocyte maturation?
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20. The Lymphatic System
Primary Lymphoid Organs
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Why is it important for there to be a blood-thymus barrier?
A
To prevent maturing T cells from encountering antigens, as it could disrupt their development.
B
To prevent mature T cells from leaving the thymus.
C
To prevent immature T cells from the red bone marrow from entering the thymus.
D
To prevent thymic corpuscles from being exposed to too much oxygen.
Verified step by step guidance1
Understand the role of the thymus: The thymus is an organ where T cells mature. It is crucial for the development of a functional and self-tolerant T cell repertoire.
Identify the function of the blood-thymus barrier: The blood-thymus barrier is a physical barrier that separates developing T cells in the thymus from the bloodstream.
Consider the importance of antigen exposure: Maturing T cells should not be exposed to antigens prematurely, as this could lead to improper development or autoimmunity.
Recognize the correct function of the blood-thymus barrier: The primary purpose of the blood-thymus barrier is to prevent maturing T cells from encountering antigens, ensuring proper development.
Evaluate the options: The correct answer is the one that aligns with the function of the blood-thymus barrier, which is to prevent maturing T cells from encountering antigens.
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