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Cat Muscles

Origin, Insertion, Action. Comparative Anatomy

MuscleOriginInsertionAction
Clavotrapezius Spines of thoracic vertebrae Clavicle Rotate scapula dorsad; draw it craniad
Acromiotrapezius Spines of thoracic vertebrae Acromion rotate scapula dorsad
Spinotrapezius spines of thoracic vertebrae Spine of scapula rotate scapula dorsad
Latissimus dorsi spines of posterior thoracic vertebrae, spines of lumbar vertebrae, sacrum and ilium Proximal Humerus Extend arm
Rhomboids Spines of thoracic vertebrae vertebral border of scapula draw scapula toward midline
Levator scapulae ventralis Occipital bone acromion of scapula draw scapula craniad
Pectoantibrachialis Upper sternum Forearm Adduct the arm
Pectoralis major Sternum Proximal Humerus Adduct the arm
Pectoralis Minor Posterior sternum proximal humerus adduct the arm; draw scapula ventrad
Xiphihumeralis xiphoid process of sternum proximal humerus adduct the arm; draw scapula caudad
Serratus ventralis upper 8,9 ribs vertebral border of scapula anchors scapula to thoracic wall
Clavobrachialis (clavodeltoid) Calvicle Ulna Flex forearm
Acromiodeltoid acromion humerus flex humerus
Spinodeltoid Spine of scapula deltoid tuberosity of humerus flex humerus
Supraspinatus Supraspinous fossa of scapula proximal humerus abduct the arm
Infraspinatus Infraspinous fossa proximal humerus lateral rotator of arm
Teres Major Axillary border of scapula proximal humerus medial rotator of arm; adduct and extend the arm
Subscapularis subscapular fossa proximal humerus medial rotator of arm
Triceps brachii: Long head infraglenoid tubercle of humerus olecranon process of ulna extend forearm
Triceps brachii: Lateral head Dorsal surface of humerus olecranon process of ulna extend forearm
Triceps brachii: Medial head Dorsal surface of humerus olecranon process of ulna extend forearm
Anconeus Lateral epicondyle of humerus olecranon process of ulna extend forearm
Epitrochlearis Latissimus dorsi fascia of forearm tenses forearm fascia
Biceps brachii scapula near glenoid fossa radial tuberosity flex forearm and arm
Brachialis lateral humerus proximal ulna flex forearm
Rectus abdominus pubis sternum flex trunk
External abdominal oblique external surface of ribs crest of ilium and fibers on opposite external oblique compress abdomen
Internal abdominal oblique crest of ilium and lumbodorsal fascia aponeurosis in ventral midline compress abdomen
Transerve abdominus Costal cartilages, lumbodorsal fascia, crest of ilium Aponeurosis in ventral midline Compress abdomen
Created by: DorothyJean
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