Appendicular Muscles

1
Appendicular Muscles

• Pectoral Girdle and Upper Limb

2
A. Pectoral Girdle
3
1. Trapezius
4
2. Levator Scapula
5
3. Rhomboids
6
Trapezius
1
Levator scapula
2
3
Rhomboids
7
4. Pectoralis Minor
8
5. Pectoralis Major
9
6. Deltoid (A to P)
10
6. Deltoid (P to A)
11
Deltoid
6
4
5
Pectoralis minor
Pectoralis major
12
7. Latissimus Dorsi
13
7. Latissimus Dorsi
7
Latissimus dorsi
14
Rotator Cuff

• Comprised, in part, of 4 muscles that stabilize
  the shoulder joint by limiting the range of
  movement of that joint
• Secure the head of the humerus within the glenoid
  fossa
• Subscapularis
• Supraspinatus
• Infraspinatus
• Teres minor

15
Rotator Cuff
16
Rotator Cuff
17
1. Subscapularis
18
2. Supraspinatus
19
3. Infraspinatus
20
4. Teres Minor
21
Teres Major
Not a muscle of the rotator cuff
22
B. Muscles of the Arm
23
1. Biceps Brachii
24
2. Brachialis
25
3. Triceps
26
C. Muscles of the Forearm

• Most anterior muscles cause flexion of wrist and
  fingers and are attached to the medial epicondyle
  of the humerus
• Most posterior muscles cause extension of wrist
  and fingers and are attached to the lateral
  epicondyle
• Lateral epicondylitis

27
Anterior Forearm
28
Carpal Tunnel Syndrome

• Read p. 371

29
Pronator Teres
30
Posterior Forearm
31
Supinator