Which Muscle Supports the Arm in a Position of 90

question 9

Multiple Choice

Which muscle supports the arm in a position of 90 degrees of abduction?

• A) anterior deltoid
• B) middle deltoid
• C) posterior deltoid
• D) pectoralis major

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Definitions:

Mg/dL

Milligrams per deciliter, a measurement unit used in medicine to denote the concentration of substances in the blood.

Elevated

Raised above the ground or a normal level; increased in position or status.

Dehydration

Withdrawal of water from the tissues naturally or artificially.

Sodium

A chemical element (symbol Na) that is a highly reactive metal and an essential nutrient for living beings, playing a critical role in nerve function and fluid balance.