Anatomy & Physiology
Published on Nov 18, 2015
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PRESENTATION OUTLINE
SHOULDER JOINT
JONATHAN
LOCATION
- Proximal to the arms
- Lateral to the bottom of you neck
- Joint where the humerus attaches to the scapula
TYPE OF JOINT
- BALL AND SOCKET
Untitled Slide
MAIN BONES INVOLVED
- Humerus
- Scapula
- Clavicle
These bones are long bones, all the types of bones include long, short, flat, sesamoid, and irregular bones.
MOVEMENTS
- Arm adduction
- Arm abduction
- Medial rotation
- Lateral rotation
- Flextion and extention
Untitled Slide
MUSCLES
- Serratus anterior
- Pectoralis major
- Trapezius
- Levator scapulae
Serratus anterior - stabilizes scapula
Origin : upper 8 or 9 ribbs
Insertion : scapula
Pectoralis major - flexion
Origin : clavicle, sternum
Insertion : humerus
Trapezius - steady the shoulders (shrugging)
Origin : External occipital protuberance
Insertion : scapula
Levator scapulae - lifts scapula
Origin : top of spine, posterior tubercles
Insertion : scapula
Origin : upper 8 or 9 ribbs
Insertion : scapula
Pectoralis major - flexion
Origin : clavicle, sternum
Insertion : humerus
Trapezius - steady the shoulders (shrugging)
Origin : External occipital protuberance
Insertion : scapula
Levator scapulae - lifts scapula
Origin : top of spine, posterior tubercles
Insertion : scapula
MUSCLES
- Deltoid
- Latissimus dorsi
- Teres major
Deltoid - abducts arm
Origin : Clavicle, scapula
Insertion : humerus
Latissimus dorsi - extends arm
Origin : t7-l5 of vertebra
Insertion : humerus
Teres major - works with latissimus dorsi to extend arm, internal rotation of humerus
Origin : scapula
Insertion : humerus
Origin : Clavicle, scapula
Insertion : humerus
Latissimus dorsi - extends arm
Origin : t7-l5 of vertebra
Insertion : humerus
Teres major - works with latissimus dorsi to extend arm, internal rotation of humerus
Origin : scapula
Insertion : humerus
