The document describes several muscles around the shoulder joint - the trapezius, rhomboideus major, levator scapulae, teres major, latissimus dorsi, supraspinatus, deltoid, infraspinatus, and teres minor. For each muscle, it provides the figure and page number from the textbook, the function of the muscle, and a note about how the muscle is connected to the scapula or humerus.
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**
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
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
