3. posterior shoulder back(1)

1. Figure 8.17; page 182
Chart 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**

2. Trapezius (another look)
Note how the
muscle is
connected to
the scapula &
to the vertebral
column

3. Figure 8.17; page 182
Chart 8.6; page 183
Function?
?
Rhomboideus major
Raises and adducts the scapula

4. Rhomboideus major
(another look)
Note how the
muscle is
connected to
the scapula

5. Figure 8.17; page 182
Chart 8.6; page 183
Function?
?
Levator scapulae
Elevates the scapula

6. Levator scapulae
(another look)
Note how the
muscle is
connected to
the scapula

7. Figure 8.17; page 182
Chart 8.7; page 184
Function?
?
Teres major
Extends the humerus; adducts
and rotates the arm medially

8. Teres major (another look)
Note how the muscle wraps around
from the posterior to the anterior
side of the humerus

9. Figure 8.17; page 182
Chart 8.7; page 184
Function?
?
Latissimus dorsi
Extends and adducts the arms
and rotates the humerus
inwardly; pulls the shoulder
downward and back

10. Latissimus dorsi
(another look)
Note how the muscle wraps around
from the posterior to the anterior
side of the humerus

11. Figure 8.17; page 182
Chart 8.7; page 184
Function?
?
Supraspinatus
Abducts the upper arm

12. Supraspinatus
(another look)
Note how the muscle wraps over the
top of the shoulder joint and to the
lateral side of the humerus

13. Figure 8.17; page 182
Chart 8.7; page 184
Function?
?
Deltoid
Abducts the upper arm,
extends the humerus, or flexes
the humerus
**Repeat Muscle**

14. Deltoid (another look)
Note how the muscle wraps over the
top of the shoulder joint and to the
anterior side of the humerus

15. Figure 8.17; page 182
Chart 8.7; page 184
Function?
?Infraspinatus
Rotates the arm laterally

16. 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

17. Figure 8.17; page 182
Chart 8.7; page 184
Function?
?
Teres minor
Rotates the arm laterally

18. 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