cat - origin and insertion (forelimb)

acromiodeltiod origin

posterior margin of acromion of scapula

acromiodeltiod insertion

lateral surface of sinodeltiod muscle

acromiodeltiod main action

flexes and rotates humerus laterally

acromiotrapezius origin

middorsal line from neural process of axis to 4th thoracic vertebra, by aponeurosis

acromiotrapezius insertion

metacromion process and anterior helf of spine of scapula

acromiotrapezius main action

adducts and stabilizes scapula

biceps brachii origin

small tubercle neae dorsal margin of glenoid fossa of scapula, by tendon

biceps brachii insertion

bicipital tuberosity of radius, by tendon

biceps brachii main action

flexes antebrachium

brachialis origin

lateral surface of humerus

brachialis insertion

lateral surface of ulna, just distal to semilunar notch

brachialis main action

flexes antebrachium

brachioradialis origin

midshaft of humerus

brachioradialis insertion

styloid process of radius

brachioradialis main action

supinates manus

clavobrachialis origin

clavicle and raphe shared with clavotrapezius

clavobrachialis insertion

medial surface of ulna, just distal to semilunar notch

clavobrachialis main action

flexes antebrachium

clavotrapezius origin

medial half of nuchal crest of skull and middorsal line up to neural process of axis

clavotrapezius insertion

clavicle and raphe shared with clavobrachialis

clavotrapezius main action

draws scapula anterodorsally

cleidomastoid origin

mastoid process of temporal

cleidomastoid insertion

clavicle

cleidomastoid main action

turns head when clavicle stabilized; draws clavicle anteriorly when head stabilized

coracobrachialis origin

coracoid process of scapula

coracobrachialis insertion

medial surface of proximal end of humerus

coracobrachialis main action

adducts humerus

epitrochlearis origin

surface if latissimus dorsi

epitrochlearis insertion

olecranon process of ulna, by fascia

epitrochlearis main action

extends anebrachium

infraspinatus origin

infraspinous fossa of scapula

infraspinatus insertion

greater tuberosity of humerus

infraspinatus main action

rotates humerus laterally

latissimus dorsi origin

lumbodorsal fascia

latissimus dorsi insertion

medial surface of proximal diaphysis of humerus

latissimus dorsi main action

draws humerus posterodorsally

levator scapulae ventralis origin

occipital bone and transverse process of atlas

levator scapulae ventralis insertion

ventrally on metacromion and infraspinous fossa of scapula

levator scapulae ventralis main action

draws scapula anteriorly

pectoantebrachialis origin

manubrium of sternum

pectoantebrachialis insertion

fascia covering proximal surface of antebrachium

pectoantebrachialis main action

adducts humerus

pectoralis major origin

anterior sternebrae

pectoralis major insertion

pectoral ridge of humerus

pectoralis major main action

adducts humerus

pectoralis minor origin

body of sternum

pectoralis minor insertion

pectoral ridge of humerus

pectoralis minor main action

adducts humerus

rhomboideus origin

posterior cervical and anterior thoracic vertebrae

rhomboideus insertion

posterior part of dorsal border of scapula

rhomboideus main action

draws scapula toward vertebral column

rhomboideus capitis origin

medial portion of nuchal crest

rhomboideus capitis insertion

anterior part of dorsal border of scapula

rhomboideus capitis main action

rotates and draws scapula anteriorly

serratus ventralis cervicis origin

transverse processes of 3rd to 7th cervical vertebrae

serratus ventralis cervicis insertion

medial surface of scapula, near dorsal border

serratus ventralis cervicis main action

draws scapula anteroventrally

serratus ventralis thoracis origin

lateral surface if first 9 or 10 ribs

serratus ventralis thoracis insertion

medial edge of scapula, near dorsal border

serratus ventralis thoracis main action

draws scapula ventrally, helps support trunk on forelimb

spinodeltoid origin

middle 3rd of spine of scapula

spinodeltoid insertion

deltiod ridge of humerus

spinodeltoid main action

flexes and laterally rotates humerus

spinotrapezius origin

middorsal line from neural processes of most thoracic vertebrae

spinotrapezius insertion

tuberosity of spine of scapula; fascia of supraspinatus and infraspinatus mm

spinotrapezius main action

draws scapula posterodorsally

subscapularis origin

subscapular fossa of scpaula

subscapularis insertion

lesser tuberosity of humerus

subscapularis main action

adducts humerus

supraspinatus origin

supraspinatus fossa of scapula

supraspinatus insertion

greater tuberosity of humerus

supraspinatus main action

extends humerus

teres major origin

dorsal 3rd of posterior border of scapula

teres major insertion

medial surface of humerus, by tendonn in common with latissimus dorsi

teres major main action

flexes and medially rotates humerus

teres minor origin

posterior border if scapula, just distal to glenoid fossa

teres minor insertion

greater tuberosity of humerus

teres minor main action

flexes and laterally rotates humerus

triceps brachii insertion

all 3 heads insert in the olecranon process of ulna by a common tendon

triceps brachii main action

all 3 heads act to extend antebrachium

triceps brachii - lateral head origin

deltoid ridge of humerus

triceps brachii - long head origin

posterior border of scapula, near glenoid fossa

triceps brachii - medial head origin

shaft of humerus

xiphihumeralis origin

xiphoid process of sternum

xiphihumeralis insertion

near distal border of bicipital groove of humerus

xiphihumeralis main action

adducts forelimb