A Membrane Attack Complex Is a Protein Grouping That

question 7

Multiple Choice

A membrane attack complex is a protein grouping that

• A) triggers phagocytosis of a target cell by a nearby macrophage or neutrophil.
• B) forms a channel in the target cell membrane that causes cytolysis.
• C) links a pathogen to a red blood cell so that it is carried to the liver or spleen.
• D) stimulates basophils to attack a multicellular parasite in the body.

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Definitions:

Stroke Volume

The amount of blood pumped by the left ventricle of the heart in one contraction, a key component in determining cardiac output and vascular health.

Baroreceptor Reflex

A reflex mechanism that helps maintain blood pressure stability by adjusting heart rate and blood vessel diameter in response to changes in blood pressure.

Blood Pressure

The force exerted by circulating blood on the walls of blood vessels, a critical indicator of cardiovascular health.

Preload

The degree of stretch of cardiac muscle fibers at the end of diastole, affecting the force of contraction.