Triceps Brachii Flashcards
0
Q
What is the distal attachment of triceps brachii?
A
proximal end of olecranon of ulna and fascia of forearm
1
Q
What is the origin of triceps brachii?
A
long head: infraglenoid tubercle of scapula
lateral head: posterior surface of humerus, superior to radial groove
medial head: posterior surface of humerus, inferior to radial groove
2
Q
What innervates triceps brachii?
A
radial nerve (C6, C7, C8)
3
Q
What are the main actions of triceps brachii?
A
chief extensor of forearm; long head extends arm and resists dislocation of humerus (especially important during abduction)
