Muscles Of The Arm Flashcards
What is the origin of the biceps brachi ?
Scapula
What is the insertion of the biceps brachii ?
Top of radius
Biciptal aponurosis to medial part of forearm
What are the joint actions of the biceps brachii?
Flexes the elbow
Supinatea the forearm
Assists in flexion of the shoulder
What is the origin of the brachial is ?
Humerus
What is the insertion of the brachialis ?
Ulna
What is the joint action of the brachialis ?
Flexes the elbow
What is the origin of the brachrioradialis ?
Laterally on the distal head of the humerus
What is the insertion of the brachioradialis ?
Laterally on the head of the radius
What are the joint actions of the brachoradialis ?
Flexion when the forearm is semi pronated (such as drinking water)
Assists other flexors
What is the origin of the triceps brachii?
Long head of scapula
Other two heads posterior of the humerus
What is the insertion of the triceps brachi ?
Olcecranon of the ulna
What are the joint actions of the triceps brachii?
Extension of the elbow
Assists In shoulder extension and adduction (long head only)
