Muscles crossing the Elbow Joint Flashcards
1
Q
Triceps brachii (PM)
A
O: scapula (long head), and humerus (lateral and medial heads)
I: ulna
PM of elbow extension - particularly medial head
vs. long and lateral heads are for extension against resistance
2
Q
Anconeus
A
O: humerus
I: ulna
stabilizer for ulnar abduction during forearm pronation
3
Q
Biceps brachii (PM)
A
O: scapula (short and long heads)
I: radius
PM for elbow flexion and supination
4
Q
Brachialis (PM)
A
O: humerus
I: ulna
PM for elbow flexion
5
Q
Brachioradialis
A
O: humerus
I: radius
synergist for flexion
