Muscles that move the glenohumeral joint / arm Flashcards
Origin of deltoid - anterior fibres?
Lateral clavicle.
Origin of deltoid - middle fibres?
Acromion process.
Origin of deltoid - posterior fibres?
Spine of scapula.
Insertion of all deltoid fibres?
Deltoid tuberosity.
Action/s of deltoid - anterior fibres?
Flexion, medial rotation, horizontal flexion.
Action/s of deltoid - middle fibres?
Abduction.
Action/s of deltoid - posterior fibres?
Extension, lateral rotation, horizontal extension.
Origin of pectoralis major - clavicular head?
Medial clavicle.
Origin of pectoralis major - sternal head?
Sternum and costal cartilages.
Insertion of both heads of pectoralis major?
Lateral intertubercular sulcus.
Action/s of pectoralis major - clavicular head?
Flexion…also, adduction, horizontal flexion and medial rotation for two heads.
Action/s of pectoralis major - sternal head?
Extension…also, adduction, horizontal flexion and medial rotation for two heads.
Origin of latissimus dorsi?
Thoracolumbar vertebra, iliac crest.
Insertion of latissimus dorsi?
Intertubercular sulcus.
Action/s of latissimus dorsi?
Extension, adduction, medial rotation.
Origin of teres major?
Lateral border and inferior angle scapula.
Insertion of teres major?
Medial intertubercular sulcus.
Origin of supraspinatus?
Supraspinous fossa.
Origin of infraspinatus?
Infraspinous fossa.
Origin of teres minor?
Lateral border scapula.
Insertion of supraspinatus, infraspinatus and teres minor?
Greater tubercle of humerus.
Action/s of supraspinatus?
Abduction.
Action/s of infraspinatus and teres minor?
Lateral rotation.
Origin of subscapularis?
Subscapular fossa.
Insertion of subscapularis?
Lesser tubercle of humerus.
Action/s of subscapularis?
Medial rotation.
Origin of coracobrachialis?
Coracoid process.
Insertion of coracobrachialis?
Proximal humerus.
Action/s of coracobrachialis?
Flexion and adduction.
Origin of biceps brachii - long head?
Supraglenoid tubercle.
Origin of biceps brachii - short head?
Coracoid process.
Insertion of two heads of biceps brachii?
Radial tuberosity.
Action/s of biceps brachii - long head?
Extension…and flexion for both heads.
Action/s of biceps brachii - short head?
Adduction…and flexion for both heads.
Action/s of teres major?
Medial rotation.
