My Muscles Flashcards
What is coracobrachialis origin?
Coracoid process of the scapula
What is coracobrachialis insertion?
Middle third of medial surface of humerus
What is the action of coracobrachialis?
Flexes and adducts arm at shoulder joint
What is the origin of biceps brachii?
Short head: coracoid process of scapula
Long head: supraglenoid tubercle or scapula
What is the insertion of the biceps brachii?
Radial tuberosity
What is the action of biceps brachii?
Flexes and supinates forearm
What is the origin of brachialis?
Distal half of anterior shaft of the humerus
What is the insertion of brachialis?
Coronoid process of ulna
What is the action of brachialis?
Flexes forearm
What is the origin of brachioradialis?
Proximal two thirds of lateral supracondylar ridge of humerus
What is the insertion of brachioradialis?
Lateral surface of distal end of radius
What is the action of brachioradialis?
Flexes forearm
What is the origin of triceps brachii?
Long head: infraglenoid tubercle of scapula
Lateral head: posterior surface of humerus superior to radial nerve groove
Medial head: posterior surface of humerus inferior to radial nerve groove Medial
What is the insertion of triceps brachii?
Olecranon process of the ulna
What is the action of triceps brachii?
Extends forearm long head steadies head of abducted humerus?
