3. posterior shoulder back(1)

18
igure 8.17; page 182 hart 8.6; page 183 Function? ? Trapezius Rotates the scapula and raises the arm; raises the scapula; pulls the scapula medially; pulls the scapula and shoulder downward **Repeat Muscle**

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Page 1: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.6; page 183

Function?

?Trapezius

Rotates the scapula and raises the arm; raises the scapula; pulls the scapula medially; pulls the scapula and shoulder downward

**Repeat Muscle**

Page 2: 3.  posterior shoulder  back(1)

Trapezius (another look)

Note how the muscle is connected to the scapula & to the vertebral column

Page 3: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.6; page 183

Function?

?Rhomboideus major

Raises and adducts the scapula

Page 4: 3.  posterior shoulder  back(1)

Rhomboideus major (another look)

Note how the muscle is connected to the scapula

Page 5: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.6; page 183

Function?

?Levator scapulae

Elevates the scapula

Page 6: 3.  posterior shoulder  back(1)

Levator scapulae (another look)

Note how the muscle is connected to the scapula

Page 7: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.7; page 184

Function?

?Teres major

Extends the humerus; adducts and rotates the arm medially

Page 8: 3.  posterior shoulder  back(1)

Teres major (another look)

Note how the muscle wraps around from the posterior to the anterior side of the humerus

Page 9: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.7; page 184

Function?

?Latissimus dorsi

Extends and adducts the arms and rotates the humerus inwardly; pulls the shoulder downward and back

Page 10: 3.  posterior shoulder  back(1)

Latissimus dorsi (another look)

Note how the muscle wraps around from the posterior to the anterior side of the humerus

Page 11: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.7; page 184

Function?

?Supraspinatus

Abducts the upper arm

Page 12: 3.  posterior shoulder  back(1)

Supraspinatus (another look)

Note how the muscle wraps over the top of the shoulder joint and to the lateral side of the humerus

Page 13: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.7; page 184

Function?

?Deltoid

Abducts the upper arm, extends the humerus, or flexes the humerus

**Repeat Muscle**

Page 14: 3.  posterior shoulder  back(1)

Deltoid (another look)

Note how the muscle wraps over the top of the shoulder joint and to the anterior side of the humerus

Page 15: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.7; page 184

Function?

?Infraspinatus

Rotates the arm laterally

Page 16: 3.  posterior shoulder  back(1)

Infraspinatus (another look)

Note how the muscle wraps over the posterior side of the shoulder joint and attaches to the posterior side of the humerus

Page 17: 3.  posterior shoulder  back(1)

Figure 8.17; page 182Chart 8.7; page 184

Function?

?Teres minor

Rotates the arm laterally

Page 18: 3.  posterior shoulder  back(1)

Teres minor (another look)

Note how the muscle wraps over the posterior side of the shoulder joint and attaches to the posterior side of the humerus just under the infraspinatus