Muscles of the Arm Flashcards
Where does the long head of the biceps brachii originate?
Supraglenoid tubercle
Where does the short head of the biceps brachii originate?
Coracoid process
Where does the biceps brachii insert?
Radial tuberosity
Bicipital aponeurosis
What does biceps brachii do?
Elbow flexion
Supination
What nerve innervates the biceps brachii, coracobrachialis and brachialis?
Musculocutaneous nerve
Where does coracobrachialis attach?
Coracoid process
Where does coracobrachialis insert?
Upper half of medial border of humerus
What does coracobrachialis do?
Flexes arm
Where does brachialis originate?
Anterior lower half of humerus
Where does brachialis insert?
Coronoid process and ulnar tuberosity
What does brachialis do?
Elbow flexion
Where does the long head of triceps originate?
Infraglenoid tubercle
Where does the lateral head of triceps originate?
Upper part of posterior humerus
Where does the medial head of triceps originate?
Lower half of posterior humerus
Where does triceps brachii insert?
Olecranon
What does the triceps do?
Extends elbow
What nerve innervates the triceps?
Radial nerve
