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UE - Muscles

Intrinsic Shoulder Muscles

QuestionAnswer
Supraspinatus - Origin Supraspinous Fossa
Supraspinatus - Insertion Superior 1/3rd Greater Tubercle of the Humerus
Supraspinatus - Innervation Suprascapular N. (C5-C6)
Supraspinatus - Action Initiates Humerus Abduction
Supraspinatus - Blood Supply Suprascapular A.
Infraspinatus - Origin Infraspinous Fossa
Infraspinatus - Insertion Middle 1/3rd Greater Tubercle of the Humerus
Infraspinatus - Innervation Suprascapular N. (C5-C6)
Infraspinatus - Action Lateral Rotation of the Humerus
Infraspinatus - Blood Supply Suprascapular A. & Circumflex Scapular A.
Teres Minor - Origin Infraspinous Fossa
Teres Minor - Insertion Middle 1/3rd Greater Tubercle of the Humerus
Teres Minor - Innervation Axillary N. (C5-C6)
Teres Minor - Action Lateral Rotation of the Humerus & Weak Adduction of the Humerus
Teres Minor - Blood Supply Posterior Humeral Circumflex A. & Circumflex Scapular A.
Teres Major - Origin Inferior Angle of Scapula & Inferior 1/2 of the Lateral Border of the Scapula
Teres Major - Insertion Medial Lip of the Intertubercular Groove of the Humerus
Teres Major - Innervation Lower Subscapular N. (C5-C6)
Teres Major - Action Humerus: Medial Rotation, Adduction, Weak Extension
Teres Major - Blood Supply Subscapular A. & Circumflex Scapular A.
Subscapularis - Origin Subscapular Fossa
Subscapularis - Insertion Lesser Tubercle of the Humerus
Subscapularis - Innervation Upper Subscapular N. (C5-C6) & Lower Subscapular N. (C5-C6)
Subscapularis - Action Medial Rotation of the Humerus
Subscapularis - Blood Supply Subscapular A.
Serratus Anterior - Origin Lateral 1st-9th Ribs
Serratus Anterior - Insertion Anterior Medial Border of the Scapula
Serratus Anterior - Innervation Long Thoracic N. (C5-C7)
Serratus Anterior - Action Scapula: Protraction, Upward Rotation, Holds Scapula Close to Thoracic Wall
Serratus Anterior - Blood Supply Lateral Thoracic A. (Upper Part) & Thoracodorsal A.(Lower Part)
Deltoid - Origin Lateral 1/3rd Clavicle, Acromion Process, Scapular Spine
Deltoid - Insertion Deltoid Tuberosity of the Humerus
Deltoid - Innervation Axillary N. (C5-C6)
Deltoid - Action Humerus: Abduction, Flexion, Extension
Deltoid - Blood Supply Posterior Humeral Circumflex A. & Pectoral Branch of the Thoracoacromial Trunk A.
Created by: CaitlinBukowski