In the Absence of a Co-Receptor (CD4 or CD8 for T

question 48

Multiple Choice

In the absence of a co-receptor (CD4 or CD8 for T helper cells or cytotoxic T cells,respectively) ,T cells require _____ specific peptide:MHC complexes on the antigen-presenting cell compared with interactions involving a co-receptor.

• A)more
• B)fewer
• C)the same number of.

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Definitions:

Digastric

A small muscle located under the jaw that plays a role in the opening of the mouth and the depression of the mandible.

Gastrocnemius

A large muscle located in the back part of the lower leg, forming part of the calf and responsible for flexing the foot and bending the knee.

Orbicularis Oculi

A circular muscle around the eye socket that allows for the closing of the eyes.

Gluteus Maximus

The largest and most superficial of the three gluteal muscles, significantly involved in the movement and stability of the hip and thigh.