Which Statement Correctly Describes Both CD4 and CD8 Proteins

question 19

Multiple Choice

Which statement correctly describes both CD4 and CD8 proteins?

• A) secreted by antigen-presenting cells
• B) receptors present on the surface of natural killer cells
• C) molecules present on the surface of T cells that interact with major histocompatibility (MHC) molecules
• D) molecules on the surface of antigen-presenting cells where they enhance B cell activity

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Definitions:

Corticotropin-Releasing Hormone

A hormone secreted by the hypothalamus that stimulates the release of adrenocorticotropic hormone (ACTH) from the pituitary gland, playing a key role in the stress response.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for integrating sensory information and responding accordingly.

Chronic Stressors

Chronic stressors involve ongoing or repeated exposure to stress-inducing conditions over an extended period, often leading to long-term health and psychological effects.

Immune-System Functioning

The complex biological processes and mechanisms that enable the body to recognize and defend against pathogens and other foreign substances.