Theater Lab Practical 3: Key Terms & Definitions

Origin of deltoid:

Clavicle; acromion; spine of scapula

Insertion of deltoid:

Deltoid tuberosity

Origin of supraspinatus:

Supraspinous fossa

Insertion of supraspinatus:

Greater tubercle

Origin of infraspinatus:

Infraspinous fossa

Insertion of infraspinatus:

Greater tubercle

Origin of subscapularis:

Subscapular fossa

Insertion of subscapularis:

Lesser tubercle

Origin of teres minor:

Lateral border of scapula

Insertion of teres minor:

Greater tubercle

Origin of teres major:

Posterior surface of scapula

Insertion of teres major:

Intertubercular sulcus of humerus

Origin of biceps brachii:

Coracoid process and supraglenoid tubercle

Insertion of biceps brachii:

Radial tuberosity

Origin of brachialis:

Anterior surface of distal humerus

Insertion of brachialis:

Coronoid process of ulna

Origin of triceps brachii:

Infraglenoid tubercle; posterior shaft of humerus; distal radial groove

Insertion of triceps brachii:

Olecranon

Origin of pronator quadratus:

Distal portion of anterior ulna shaft

Insertion of pronator quadratus:

Distal surface of anterior radius

Origin of pronator teres:

Medial epicondyle of humerus; coronoid process of ulna

Insertion of pronator teres:

Lateral radius

Origin of supinator:

Lateral epicondyle of humerus; proximal ulna

Insertion of supinator:

Proximal end of radius

Origin of flexor carpi radialis:

Medial epicondyle of humerus

Insertion of flexor carpi radialis:

Base of 2nd and 3rd metacarpals

Origin of flexor carpi ulnaris:

Medial epicondyle; olecranon; posterior surface of ulna

Insertion of flexor carpi ulnaris:

Pisiform and hamate bones; base of 5th metacarpal

Origin of extensor carpi radialis brevis:

Lateral epicondyle of humerus

Insertion of extensor carpi radialis brevis:

Base of 3rd metacarpal

Origin of extensor carpi radialis longus:

Lateral supracondylar ridge of humerus

Insertion of extensor carpi radialis longus:

Base of 2nd metacarpal

Origin of extensor carpi ulnaris:

Lateral epicondyle of humerus; posterior border of ulna

Insertion of extensor carpi ulnaris:

Base of 5th metacarpal

Origin of extensor digitorum:

Lateral epicondyle of humerus

Insertion of extensor digitorum:

Phalanges of fingers 2-5