Muscles of humerus

Question 1

Biceps Brachii

Answer 1

Attachments
coracoid process, supraglenoid tubercle, glenoid labrum
–>
radial tuberosity, deep fascia of forearm, ulnar aspect through the bicipital aponeurosis

Actions
Elbow Flexion
Forearm supination
(minor shoulder abduction and flexion)

Question 2

Triceps Brachii

Answer 2

Attachments
infraglenoid tubercle of scapula, inferior part of glenoid labrum,
posterior shaft of humerus to lateral spiral groove
posterior shaft of humerus medial to the spiral groove
–> to olecranon process of ulnar, posterior joint capsule of elbow

Action
Elbow extension

Question 3

Brachialis

Answer 3

Attachments
Distal 2/3 of anterior shaft of humerus
–>
ulnar tuberosity, coronoid process of ulna

action
elbow flexion

Question 4

Brachioradialis