Download Class # 8 - Dr. Robert Jordan

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
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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:
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Occipital bone (EOP) External Occipital
Protuberance (p.2)
Temporal bone (mastoid process) (p.235)
Clavicle(p.4)
Humerus (bicipital groove)(p.6-6)
Muscles of the back:
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Trapezius (p.69TG)
O:EOP
Ligamentum nuchae(EOP to Sp.C7)
Sp. C7-T12
I:Lateral Clavicle
Acromion process(upper)
Spine of scapula-middle
Root of spine of scapula-lower
A:Bilaterally upper- Extension of head and neck
Unilaterally upper- Lateral flexion of head and neck to same
side.
Elevation and upward rotation- scapula
Retraction- Middle scapula
Depression and upward rotation- lower scapula
Muscles of the back:
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Latissimus dorsi
O: Thoracolumbar aponeurosis(flat sheet
of connective tissue)
Lower 6 thoracic Spinous processes
Sacrum/Iliac crest
Last 3 ribs
Inferior angle of scapula (covering most of
the axillary border)
Muscles of the back:
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Latissimus dorsi
I: Bicipital groove of the humerus(medial
lip)
A: Medial rotation
Adduction
Extension of humerus at shoulder joint
Muscles of the back:
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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
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
Great Job!
Quiz next class on back muscles
Have a great day