Cytotoxic T Cells

question 70

Multiple Choice

Cytotoxic T cells

• A)are activated by free,soluble antigens.
• B)lack specificity for antigen.
• C)secrete granzymes and perforins that damage target cells.
• D)secrete interleukin-2 to stimulate B and T cells.

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Definitions:

Nightmare

A disturbing dream associated with negative feelings, such as fear or horror, which can awake a person.

Parasomnias

Sleep disturbances in which behaviors and physiological states that normally take place only in the waking state occur while a person is sleeping.

Insomnias

Sleep disorders characterized by difficulty falling or staying asleep, leading to significant distress or impairment in daytime functioning.

Apneas

Interruptions in breathing during sleep, commonly associated with health conditions like sleep apnea.