Class # 8 Spine & Back Muscles. Topics: 24 individual vertebrae: 7 Cervical 12 Thoracic 5 Lumbar 1...
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Transcript of Class # 8 Spine & Back Muscles. Topics: 24 individual vertebrae: 7 Cervical 12 Thoracic 5 Lumbar 1...
![Page 1: Class # 8 Spine & Back Muscles. Topics: 24 individual vertebrae: 7 Cervical 12 Thoracic 5 Lumbar 1 Sacrum: 5 fused bones 1 Coccyx: 4 fused bones.](https://reader030.fdocuments.net/reader030/viewer/2022032805/56649ef65503460f94c0aa7f/html5/thumbnails/1.jpg)
Class # 8
Spine & Back Muscles
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Topics:
24 individual vertebrae:
7 Cervical
12 Thoracic
5 Lumbar
1 Sacrum: 5 fused bones
1 Coccyx: 4 fused bones
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Topics:
Vertebral spinous processes and transverse processes
Spinous process: always posterior
Transverse process: 2 projections out of sides
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Topics:
Scapula Landmarks:
Spine:
Root of spine (11)
Acromion process/ Lateral end (3)
Coracoid process (4)
Suprascapular notch (15)
Supraglenoid tubercle (9)
Infraglenoid tubercle (8)
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Topics:
Occipital bone (EOP) External Occipital Protuberance (p.2)
Temporal bone (mastoid process) (p.235) Clavicle(p.4) Humerus (bicipital groove)(p.6-6)
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Muscles of the back: Trapezius (p.69TG)
O:EOPLigamentum nuchae(EOP to Sp.C7)Sp. C7-T12
I:Lateral ClavicleAcromion process(upper)Spine of scapula-middleRoot of spine of scapula-lower
A:Bilaterally upper- Extension of head and neckUnilaterally upper- Lateral flexion of head and neck to same side.Elevation and upward rotation- scapulaRetraction- Middle scapulaDepression and upward rotation- lower scapula
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Muscles of the back:
Latissimus dorsiO: Thoracolumbar aponeurosis(flat sheet of connective tissue)Lower 6 thoracic Spinous processesSacrum/Iliac crestLast 3 ribsInferior angle of scapula (covering most of the axillary border)
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Muscles of the back:
Latissimus dorsi
I: Bicipital groove of the humerus(medial lip)
A: Medial rotation
Adduction
Extension of humerus at shoulder joint
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Muscles of the back:
Teres Major
O: Inferior angle of scapula
Lower third of axillary border of scapula
I: Medial lip of bicipital groove
A: Medial rotation
Adduction
Extension of humerus at shoulder joint
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Muscles of the back:
Teres Major performs the exact same actions as latissimus dorsi, together can be called “handcuff muscles”.
(brings your arms into arresting position)
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The End!
Here is your class assignment
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Great Job!
Quiz next class on back musclesHave a great day