Flashcards
Scapular Region Muscles
Cards in this deck (28)
- 1Serraturs Anterior- originLateral parts of the 1st - 8th ribs
- 2Serratus Anterior : InsertionAnterior surface of medial border of scapula
- 3Serratus Anterior : InnervationLong thoracic nerve (C5 to C7)
- 4Serratus Anterior Actions:1. Protracts scapula (pushes shoulder down)
2. Holds scapula against the thoracic wall
3. Superior rotation of the scapula
(PHS) - 5Deltoid : Originlateral third of clavicle, acromion process, and spine of scapula
- 6Deltoid : InsertionDeltoid Tuberosity
- 7Deltoid : InnervationAxillary Nerve (C5-C6)
- 8Deltoid Actions:1. All three simultaneously: abduct the humerus after 150 to the horizontal and stabilize the shoulder
2. Anterior: flexion and medial rotation of the humerus
3. Posterior: extension and lateral rotation of the humerus - 9Teres Major : originInferior angle of scapula (posterior surface)
- 10Teres Major: InsertionMedial lip of intertubercular sulcus (LD)
- 11Teres major : innervationLower subscapular nerve (C5-C6)
- 12Teres major: ActionAdducts and medially rotates the humerus
- 13Rotator Cuff: Supraspinatus OriginSupraspinous fossa
- 14Supraspinatus : InsertionSuperior aspect of greater tubercle
- 15Supraspinatus : InnervationSuprascapular nerve (C5-C6)
- 16Supraspinatus : ActionAdduct the arm for the first 15 degrees
2. Tonic contraction (sustained movement) stabilizes the GH joint - 17Rotator Cuff: Infraspinatus OriginInfraspinous fossa
- 18Infraspinatus : insertionMiddle aspect of greater tubercle
- 19Infraspinatus : InnervationSuprascapular nerve (C5-C6)
- 20Infraspinatus : functionTonic contraction stabilize the GH joint
2. laterally rotates arm - 21Rotator cuff: Teres minor OriginMiddle part of lateral border of scapula
- 22Teres minor: InsertionInferior aspect of greater tubercle
- 23Teres minor : InnervationAxillary nerve (C5-C6) (similar to deltoids)
- 24Teres minor : ActionTonic contraction stabilizes the GH joint
2. laterally rotates arm (similar to infraspinatus) - 25Rotator Cuff: Subscapularis OriginSubscapular fossa
- 26Subscapularis : InsertionLesser tubericle
- 27Subscapularis : InnervationUpper and lower subscapular nerves (C5-C6)
- 28Subscapularis : Action1. Tonic contraction stabilizes the GH joint
2. Medially rotates arm
Information
- Description
- Serratus Anterior ( Scapulothoracic Muscle) All others ( scapulohumeral muscles)
- Created by
- Gina Fatahi
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