Muscles
Arm
Biceps Brachii
Scapula
Insertion
Top of radius and bicipital aponeurosis to medial part of forearm
Joints Crossed
Shoulder and Elbow
Joint Movements
Flexes elbow
Supinates forearm
Assists in flexion of the shoulder joint
Brachialis
Humerus
Insertion
Ulna
Joints Crossed
Elbow
Joint Action
Flexion at the elbow
Tricep Brachii
- Long head on scapula just above shoulder joint
- Other 2 head on posterior (back) of the humerus
Insertion
- Olecranon of Ulna
Joints Crossed
- Elbow and shoulder
Actions
- Extension at elbow
- Assist in shoulder extension and adduction
Brachioradalialis
- Laterally at the distal end of the humerus
Insertion
- Laterally at the distal end of the radius
Joints crossed
- Elbow
Joint Action
- Flexion when the forearm is semi pronated (eg drinking)
- And also assists as a flexor for other movements