3 Musculature: Topographical Anatomy
3.1 The Posterior Muscles of the Shoulder Girdle and Shoulder Joint
A Muscles of the shoulder girdle and shoulder joint
Right half of the body, posterior view. Superficial layer.
B Muscles of the shoulder girdle and shoulder joint
Right half of the body, posterior view. Deep layer. Portions of the trapezius and latissimus dorsi muscles have been removed.
3.2 The Posterior Muscles of the Shoulder Joint and Arm
A Muscles of the shoulder and arm
Right side, posterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a After removal of the trapezius.
b After removal of the deltoid and forearm muscles.
B Muscles of the shoulder and arm
Right side, posterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a The supraspinatus, infraspinatus, and teres minor have been removed. The lateral head of the triceps brachii has been partially removed.
b All the muscles have been removed.
3.3 The Anterior Muscles of the Shoulder Girdle and Shoulder Joint
A Muscles of the shoulder and arm
Right side, anterior view.
B Muscles of the shoulder and arm
Right side, anterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion). The sternocleidomastoid, trapezius, pectoralis major, deltoid, and external oblique muscles have been completely removed. The latissimus dorsi has been partially removed.
3.4 The Muscles of the Shoulder Joint and Anterior Arm
A Muscles of the shoulder and arm
Right side, anterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a After removal of the thoracic skeleton. Latissimus dorsi and serratus anterior have been removed to their insertions.
b Latissimus dorsi and serratus anterior have been completely removed.
B Muscles of the shoulder and arm
Right side, anterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a After removal of the thoracic skeleton and the subscapularis and supraspinatus muscles. The biceps brachii has been removed to the tendon of origin of its long head (note its course through the intertubercular groove).
b All the muscles have been removed.
3.5 The Muscles of the Anterior Forearm
A Muscles of the forearm
Right forearm, anterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a The superficial flexors and the radialis group are shown.
b The radialis group (brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis) has been completely removed, along with the flexor carpi radialis, flexor carpi ulnaris, abductor pollicis longus, palmaris longus, and biceps brachii.
B Muscles of the forearm
Right forearm, anterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a Pronator teres and flexor digitorum superficialis have been removed.
b All the muscles have been removed.
3.6 The Muscles of the Posterior Forearm
A Muscles of the forearm
Right forearm, posterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
a The superficial extensors and the radialis group are shown.
b Triceps brachii, anconeus, flexor carpi ulnaris, extensor carpi ulnaris, and extensor digitorum have been removed.
B Muscles of the forearm
Right forearm, posterior view. The origins and insertions of the muscles are indicated by color shading (red = origin, blue = insertion).
Note the interosseous membrane, which contributes to the origin of several muscles in the forearm.
a Abductor pollicis longus, extensor pollicis longus, and the radialis group have been removed.
b All the muscles have been removed.
Stay updated, free articles. Join our Telegram channel
Full access? Get Clinical Tree
