3. posterior shoulder back(1)
DESCRIPTION
TRANSCRIPT
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**
Trapezius (another look)
Note how the muscle is connected to the scapula & to the vertebral column
Figure 8.17; page 182Chart 8.6; page 183
Function?
?Rhomboideus major
Raises and adducts the scapula
Rhomboideus major (another look)
Note how the muscle is connected to the scapula
Figure 8.17; page 182Chart 8.6; page 183
Function?
?Levator scapulae
Elevates the scapula
Levator scapulae (another look)
Note how the muscle is connected to the scapula
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Teres major
Extends the humerus; adducts and rotates the arm medially
Teres major (another look)
Note how the muscle wraps around from the posterior to the anterior side of the humerus
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
Latissimus dorsi (another look)
Note how the muscle wraps around from the posterior to the anterior side of the humerus
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Supraspinatus
Abducts the upper arm
Supraspinatus (another look)
Note how the muscle wraps over the top of the shoulder joint and to the lateral side of the humerus
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Deltoid
Abducts the upper arm, extends the humerus, or flexes the humerus
**Repeat Muscle**
Deltoid (another look)
Note how the muscle wraps over the top of the shoulder joint and to the anterior side of the humerus
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Infraspinatus
Rotates the arm laterally
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
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Teres minor
Rotates the arm laterally
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