Lymphocytes

question 43

Multiple Choice

Lymphocytes

• A)possess MHC antigens for recognizing self.
• B)have membrane receptors that recognize foreign antigens.
• C)gain tolerance to self by destruction of lymphocytes that could react against self.
• D)develop into clones of B and T cells with extreme variations of specificity.
• E)All of the choices are correct.

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Definitions:

Mediastinum

An area between the lungs that contains the heart, aorta, esophagus, trachea, and thymus.

Surgical Puncture

A medical procedure involving the insertion of a needle to remove fluid for diagnostic purposes or relieve pressure.

Chest Wall

The structures that enclose the chest cavity, including the rib cage, muscles, and skin, providing protection and support.

Fluid

A substance that flows freely, such as a liquid or gas, adjusting its shape to fit its container.