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)