Which of the following is not part of the origin of the triceps brachii?

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Prepare for the NHI Eastern Kinesiology Test with our comprehensive quiz. Utilize flashcards and multiple-choice questions, complete with hints and detailed explanations. Ready yourself for success!

Multiple Choice

Which of the following is not part of the origin of the triceps brachii?

Explanation:
The triceps brachii starts from multiple sites, while its tendon ends at the elbow. Specifically, the long head attaches to the infraglenoid tubercle of the scapula, and the lateral and medial heads arise from the posterior surface of the humerus (above and below the radial groove, respectively). The olecranon process of the ulna is where the muscle inserts via its tendon, not where it originates. So the olecranon process is not part of the origin, making it the correct choice.

The triceps brachii starts from multiple sites, while its tendon ends at the elbow. Specifically, the long head attaches to the infraglenoid tubercle of the scapula, and the lateral and medial heads arise from the posterior surface of the humerus (above and below the radial groove, respectively). The olecranon process of the ulna is where the muscle inserts via its tendon, not where it originates. So the olecranon process is not part of the origin, making it the correct choice.

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