Which of the Following Opposes the Flow of Blood Back

question 5

Multiple Choice

Which of the following opposes the flow of blood back to the heart?

• A) vascular resistance
• B) peripheral veins have valves to prevent backflow of blood
• C) muscular pumps squeeze veins and move blood toward the heart
• D) blood pressure
• E) blood pressure gradient from arteries to veins

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Definitions:

Buccinator

A muscle of the cheek that acts to compress the cheek against the teeth and is used in blowing and sucking motions.

Medial Excursion

Medial excursion is the movement of a body part toward the median plane of the body, often used to describe movements of the jaw or limbs.

Lateral Excursion

Refers to the side-to-side movement of the mandible, common in chewing actions.

Mandible

The lower jawbone in vertebrates, forming the lower part of the mouth structure.