Which group of muscles is located at the back of the upper arm?

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Study for the Muscular System and Skeletal System Exam. Learn with flashcards and multiple choice questions, where each question has explanations and hints. Be well-prepared and confident on your test day!

Multiple Choice

Which group of muscles is located at the back of the upper arm?

Explanation:
The main idea here is recognizing where muscles sit and what they do in the upper limb. The muscle group on the back of the upper arm is the triceps brachii, a three-headed muscle that occupies the posterior aspect of the upper arm and is the primary elbow extensor, helping to straighten the arm. By contrast, the biceps brachii is on the front of the upper arm and flexes the elbow, the deltoid covers the shoulder and lifts the arm, and the forearm muscles are located in the forearm, not the upper arm. So the muscle group at the back of the upper arm is the triceps.

The main idea here is recognizing where muscles sit and what they do in the upper limb. The muscle group on the back of the upper arm is the triceps brachii, a three-headed muscle that occupies the posterior aspect of the upper arm and is the primary elbow extensor, helping to straighten the arm. By contrast, the biceps brachii is on the front of the upper arm and flexes the elbow, the deltoid covers the shoulder and lifts the arm, and the forearm muscles are located in the forearm, not the upper arm. So the muscle group at the back of the upper arm is the triceps.

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