Anterior and Posterior Arm Muscles Quiz

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Questions and Answers

What is the function of the Deltoid (anterior)?

  • Flexes arm (correct)
  • Abducts arm at shoulder (correct)
  • Flexes forearm
  • Extends arm

What is the function of the Brachialis?

Flexes forearm

What is the function of the Biceps brachii?

Flexes forearm

What is the function of the Brachioradialis?

<p>Flexes forearm</p> Signup and view all the answers

What is the function of the Deltoid (posterior)?

<p>Extends arm</p> Signup and view all the answers

What are the functions of the Triceps brachii?

<p>Extends arm (A), Abducts arm at shoulder (B)</p> Signup and view all the answers

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Study Notes

Anterior Arm Muscles

  • Deltoid (anterior): Responsible for arm abduction at the shoulder and flexion of the arm.
  • Brachialis: Primarily flexes the forearm at the elbow.
  • Biceps brachii: Also assists in flexing the forearm; crucial for forearm supination.
  • Brachioradialis: Flexes the forearm; particularly active during rapid movements or heavy lifting.

Posterior Arm Muscles

  • Deltoid (posterior): Functions to extend the arm at the shoulder.
  • Triceps brachii: Abducts the arm at the shoulder and extends the arm, crucial for pushing movements.

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