Cat Muscles Origin Insertion Function

Cat Muscles Origin Insertion Function Table6.4 P .105
  
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external intercostal
 
o: Rib i: rib f: draws ribs craniad
external obliques
 
o: lumbodorsal fascia & ribs i: aponeurois on the linea alba f: compresses abdominal viscera
rectus abdominis
 
O: pubic symphysis i: sternum & costal cartilage f: flexes trunk & compresses abdominal viscera
clavobrachialis
 
o: clavicle i: proximal end of ulna f: draws humerus craniad
pectoantebrachialis
 
O: manubrium i: fascia of forelimb near elbow f: adducts & rotates the forelimb
pectoralis major
 
o: cranial sternebrae i: proximal half of humerus f: adducts & rotates the forelimb
pectoralis minor
 
o: caudal sternebrae i: proximal half of humerus f: adducts & rotates the forelimb
xiphihumeralis
 
o: xiphoid process i: proximal end of humerus f: adducts & rotates the forelimb
blank
 
omit
blank
 
blank
digastric
 
o: mastoid & juglar processes of occipital i: mandible f: depresses lower jaw
geniohyoid
 
O: mandible i: hyoid f: draws hyoid craniad
hyoglossus
 
O: hyoid i: tongue f: retracts tongue
mylohyoid
 
o: mandible i: median raphe f: elevates floor of mouth
sternohyoid
 
o: manubrium of sternum i: hyoid f: draws hyoid caudal
sternomastoid
 
o: manubrium of sternum i: lambdoidal ridge & mastoid process f: rotates head
sternothyroid
 
o: manubrium of sternum i: thyroid cartilage f: draws larynx caudal
thyrohoid
 
o: thyroid cartilage i: hyoid f: draws larynx craniad
masseter
 
O; zygomatic arch i: mandible f: elevates lower jaw
temporalis
 
o: lambdoidal crest & zygomatic process of frontal bone i; coronoid process of mandible f: elevates lower jaw
acromiodeltoid
 
o: acromion process of scapula i: humerus f: flexes and rotates humerus
acromiotrapezius
 
o: neural spines of cervical and 1st thoracic vertebrae i: metacromion process and spine of scapula f: draws scapula dorsally & medially
clavotrapezius
 
o: nuchal line of skull & dorsal midline of neck i: clavicle f: draws humerus craniad
infraspinatus
 
o: infraspinous fossa of scapula i: greater tuberosity of humerus f: rotates the humerus
latissimus dorsi
 
o: lumbodorsal fascia & neural spines of the last thoracic and lumbar vertebrae i: medial surface of humerus f: elevates the arm and draws it caudal
levator scapulae ventralis
 
O: occipital bone and transverse process of atlas i: metacromion process f: draws scapula craniad
rhoboideus
 
o: neural spines of thoracic vertebrae i: ventral border of scapula f: draws scapula dorsally
rhomboideus capitis
 
o: superior nuchal line i: angle of scapula f: draws scapula craniad
spinodeltoid
 
o: spine of scapula i; deltoid ridge of humerus f: elevates & rotates the humerus
spinotrapezius
 
o: neural spines of thoracic vertebrae i: fascia around scapula f: draws scapula dorsally and caudal
splenius
 
o: mid-dorsal fascia of neck i: nuchal line f: turns and elevates head
supraspinatus
 
o: supraspinous fossa i: greater tuberosity of humerus f: extends the humerus
coracobrachialis
 
o: coracoid process i: proximal end of humerus f: adducts humerus
scalenus
 
o: ribs i: cervical vertebrae f: flexes neck, draws ribs craniad
serratus ventralis
 
o: first 10 ribs i: vertebral border of scapula f: draws scapula ventrally & craniad
subscapularis
 
o: subscapular fossa i: lesser tuberosity of humerus f: draws humerus medially
teres major
 
o: axillary border of scapula i: medial surface of humerus f: draws humerus medially
transversus costarum
 
o: sternum i: first rib f: draws sternum craniad
biceps brachii
 
o: border of glenoid fossa i: tuberosity of radius f: flexes forearm
brachialis
 
o: lateral surface of humerus i: below semilunar notch of ulna f: flexes forearm
epitrochlearis
 
o: lateral surface of latissimus dorsi i: below semilunar notch of unla f: flexes forearm
triceps brachii lateral head
 
O: shaft of humerus i: olecranon process of ulna f: extends forearm
triceps brachii medial head
 
o: axillary border of scapula i: olecranon process f: extends the forearm
triceps brachii long head
 
o: humerus i: olecranon fossa f: extends forearm
brachioradialis
 
o: middle of humerus i: distal end of radius f: supinator of manus
extensors (forearm-antebrachium)
 
o: omit i: omit f: extend manus or digits
flexors (forearm-antebrachium)
 
o: omit i: omit f: flexes manus

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