Triceps Brachii
Action of Triceps Brachii
All three heads extend the elbow, but the long head also extends the humerus
Origin of the Long Head
Infraglenoid tubercle of scapula (area just below socket of shoulder joint)
Brachii
Latin: of the arm
Triceps
Latin: three headed
The triceps has three heads
Long (lazy) head, lateral head, and medial head
Which of the three heads of the Triceps crosses over the shoulder joint
Long Head
Insertion of Triceps Brachii
Olecranon process (elbow) of ulna
Origin of Medial Head
Posterior (lower half of) humerus below spiral groove
Origin of the Lateral Head
Posterior (upper half of) humerus above spiral groove
What ensures that the Long Head will be worked
That the elbow is flexed