According to the Principle of Reciprocity, When a Muscle Is

question 6

Multiple Choice

According to the principle of reciprocity, when a muscle is stimulated to contract, its

• A) agonists and antagonists also contract.
• B) agonists and antagonists relax.
• C) agonists contract while its antagonists relax.
• D) antagonists contract while its agonists relax.

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Definitions:

Left Atrium

One of the four chambers of the heart, receiving oxygen-rich blood from the lungs and pumping it into the left ventricle.

Pulmonary Artery

The blood vessel that carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation.

Postcava

Another term for the inferior vena cava, the large vein that carries deoxygenated blood from the lower body to the heart.

Radial Vein

A vein located in the forearm that is part of the venous system returning blood to the heart.