Complete Each of the Following Statements with Increases, Decreases, or Has

question 20

Short Answer

Complete each of the following statements with increases, decreases, or has no effect on.
An increase in parasympathetic activity ____________________ the atrial contractility.

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Definitions:

Depressor Anguli Oris

The depressor anguli oris is a facial muscle that contributes to the downward movement of the corners of the mouth, expressing sadness or frowning.

Orbicularis Oris

A circular muscle around the mouth that controls lip movements, such as puckering and closing.

Levator Labii Superioris

The Levator Labii Superioris is a facial muscle that elevates the upper lip, aiding in expressions of disgust or snarling.

Platysma

A broad, thin muscle located in the chest and neck that is involved in facial expression and movement of the jaw.