Posterior Arm Muscles: Flashcards

1
Q

Triceps Brachii Muscle:

A

“TRI” for 3 HEADS
Origin:

Medial Head (innermost, so deepest): Originates on posterior humerus

Lateral Head (outermost, so most superficial): Originates on posterior humerus

Long Head: Originates on the infraglenoid tubercle of the scapula

Insertion:
- Olecranon process of the ulna

Function:
- Extension of elbow (or forearm)
- Extension of shoulder (minor)

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