Muscles Flashcards
Subscapularis
Origin
Insertion
Action
Supraspinatus
Origin
Insertion
Action
Infraspinatus
Origin
Insertion
Action
Teres Minor
Origin
Insertion
Action
Teres Major
Origin
Insertion
Action
Scalenes
Origin: TP of C2-C7
Insertion: Ribs 1 & 2
Action: Elevation of 1st & 2nd rib
Rhomboids
Origin: SP C7-T5
Insertion: Medial Border of scapula, Spine of scapula & Inferior angle of scapula
Action: Retraction of the scapula
Serratus Anterior
Origin: Ribs 1-9
Insertion: Anterior surface of medial border of scapula
Action: Protraction of Scapula
Latissimus Dorsi
Origin: Inferior angle of scapula & sacral vertebrae
Insertion: Bicipital Groove of the humerus
Action: Extends, Adducts & medially rotates arms
Gastrocnemius
Origin: Clavicle & Manubrium of the sternum
Insertion: Mastoid Process of the temporal bone
Action: Laterally flexes and rotates neck
Trapezius
Origin: occiput, Cervical Vertebrae C7-T12
Insertion: Lateral 1/3 of Clavicle, Acromion Process & Spine of scapula
Action: Elevates, Adducts, Rotates and Depresses scapula
Supraspinatus
Origin: Supraspinous Fossa of the scapula
Insertion: Greater Tubercle of Humerus
Action: Aids Deltoids with abduction of the arm
Deltoid
Origin: Lateral 1/3 if Clavicle, Spine if scapula & Acromion Process
Insertion: Deltoid Tuberosity if the Humerus
Action: Flexes, Extends & Adducts arm, Medial & Lateral Rotation
Teres Major
Origin: Inferior angle of the scapula
Insertion: Crest of the Lesser Tubercle of the Humerus
Action: Adducts and Medially rotates arm
Scalenes
Origin: TP of C2-C7
Insertion: Ribs 1 & 2
Action: Elevation of 1st & 2nd rib