3. posterior shoulder back(1)
-
Upload
firedemon13 -
Category
Education
-
view
1.444 -
download
0
description
Transcript of 3. posterior shoulder back(1)
![Page 1: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/1.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/2.jpg)
Trapezius (another look)
Note how the muscle is connected to the scapula & to the vertebral column
![Page 3: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/3.jpg)
Figure 8.17; page 182Chart 8.6; page 183
Function?
?Rhomboideus major
Raises and adducts the scapula
![Page 4: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/4.jpg)
Rhomboideus major (another look)
Note how the muscle is connected to the scapula
![Page 5: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/5.jpg)
Figure 8.17; page 182Chart 8.6; page 183
Function?
?Levator scapulae
Elevates the scapula
![Page 6: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/6.jpg)
Levator scapulae (another look)
Note how the muscle is connected to the scapula
![Page 7: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/7.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/8.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/9.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/10.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/11.jpg)
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Supraspinatus
Abducts the upper arm
![Page 12: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/12.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/13.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/14.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/15.jpg)
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Infraspinatus
Rotates the arm laterally
![Page 16: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/16.jpg)
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)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/17.jpg)
Figure 8.17; page 182Chart 8.7; page 184
Function?
?Teres minor
Rotates the arm laterally
![Page 18: 3. posterior shoulder back(1)](https://reader033.fdocuments.us/reader033/viewer/2022061117/546659e5af795983338b5107/html5/thumbnails/18.jpg)
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