An Inflammation-Causing Signal Released by Mast Cells at the Site

question 93

Multiple Choice

An inflammation-causing signal released by mast cells at the site of an infection is

• A) an interferon.
• B) lymphatic fluid.
• C) histamine.
• D) mucus.
• E) sodium ions.

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Definitions:

P Wave

First complex of the electrocardiogram representing depolarization of the atria.

Atrial Depolarization

The electrical activation of the atria of the heart, leading to atrial contraction and the initiation of the heartbeat.

Atrial Repolarization

The process of the heart's atrial muscle cells returning to their resting state after contraction, typically hidden in an EKG by the ventricular depolarization wave.

Threshold

The minimum level of stimulation required to trigger a neural impulse or a response in a sensory system.