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Cat Musculature Origins and Insertions
Origins and insertions of cat musculature
45
Biology
Undergraduate 3
05/01/2014
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Term
rectus abdominis
 Definition
Origin: pubic symphysis

Insertion: sternum and costal cartilages

Function: flexes trunk and compresses abdominal viscera
Term
transversus
 Definition
Origin: ilium, lumbar vertebrae, and posterior ribs

Insertion: linea alba

Function: compresses abdominal viscera
Term
clavobrachialis
 Definition
Origin:clavicle

Insertion:proximal end of ulna

Function:draws humerus craniad
Term
Pectoantebrachialis
 Definition
Origin:manubrium

Insertion:fascia of forelimb near the elbow

Function: adducts and rotates the forelimb
Term
Pectoralis Major
 Definition
Origin:cranial sternebrae

Insertion: proximal half of humerus

Function:adducts and rotates the forelimb
Term
Pectoralis Minor
 Definition
Origin:caudal sternebrae

Insertion: proximal half of humerus

Function:adducts and rotates the forelimb
Term
Xiphihumeralis
 Definition
Origin:xiphoid process

Insertion: proximal half of humerus

Function:adducts and rotates the forelimb
Term
Diagastric
 Definition
Origin: mastoid and jugular processes of occipital

Insertion:mandible

Function:depresses the lower jaw
Term
Geniohyoid
 Definition
Origin:mandible

Insertion:hyoid

Function:draws hyoid craniad
Term
Mylohyoid
 Definition
Origin: mandible

Insertion: median raphe

Function: elevates floor of mouth
Term
Sternohyoid
 Definition
Origin: manubrium of sternum

Insertion: hyoid

Function: draws hyoid caudad
Term
Sternomastoid
 Definition
Origin: manubrium of sternum

Insertion: lambdoidal ridge and mastoid process

Function: rotates head
Term
Masseter
 Definition
Origin:zygomatic arch

Insertion:mandible

Function:elevates lower jaw
Term
Temporalis
 Definition
Origin:lambdoidal crest and zygomatic process of frontal bone

Insertion:coronoid process of mandible

Function:elevates lower jaw
Term
Acromiodeltoid
 Definition
Origin:acromion process of scapula

Insertion: humerus

Function: flexes and rotates humerus
Term
Acromiotrapezius
 Definition
Origin:neural spines of cervical and first thoracic vertebrae

Insertion:metacromion process and spine of scapula

Function:draws scapula dorsally and medially
Term
Clavotrapezius
 Definition
Origin: nuchal line of skull and dorsal midline of neck

Insertion: clavicle

Function: draws humerus craniad
Term
Latissimus dorsi
 Definition
Origin:lumbodorsal fascia and neural spines of the last thoracic and lumbar vertebrae

Insertion: medial surface by humerus

Function: elevates the arm and draws it caudad
Term
Spenius
 Definition
Origin: mid-dorsal fascia of the neck

Insertion: nuchal line

Function: turns and elevates head
Term
Coracobrachialis
 Definition
Origin: coracoid process

Insertion: proximal end of humerus

Function: adducts humerus
Term
Subscapularis
 Definition
Origin: subscapular fossa

Insertion: lesser tuberosity of humerus

Function: draws humerus medially
Term
Teres Major
 Definition
Origin: axillary border of scapula

Insertion: medial surface of humerus

Function: draws humerus medially
Term
Transversus Costarum
 Definition
Origin: sternum

Insertion: first rib

Function: draws sternum craniad
Term
Biceps Femoris
 Definition
Origin: ischial tuberosity

Insertion: proximal third of tibia

Function: flexes the shank, abducts thigh
Term
Caudofemoralis
 Definition
Origin: proximal caudal vertebrae

Insertion: patella

Function: abducts thigh
Term
Gluteus Maximus
 Definition
Origin: last sacral and first caudal vertebrae

Insertion: fascia lata

Function: abducts thigh
Term
Gluteus Medius
 Definition
Origin: iliac crest, sacral, and first caudal vertebrae

Insertion: greater trochanter of femur

Function: abducts thigh
Term
Tensor Fasciae Latae
 Definition
Origin: ilium

Insertion: fascia lata

Function: extends the fascia lata
Term
Adductor Femoris
 Definition
Origin: pubic symphysis

Insertion: ventral surface of femur

Function: adducts thigh
Term
Adductor Longus
 Definition
Origin: pubic symphysis

Insertion: femur

Function: adducts thigh
Term
Gracilis
 Definition
Origin: pubic symphysis

Insertion: fascia of lower thigh

Function: adducts thigh
Term
Iliopsoas
 Definition
Origin: lumbar vertebrae and ilium

Insertion: lesser trochanter of femur

Function: flexes and rotates thigh
Term
Pectineus
 Definition
Origin: pubis

Insertion: shaft of femur

Function: adducts thigh
Term
Rectus Femoris
 Definition
Origin: ilium

Insertion: patella

Function: extends lower leg
Term
Sartorius
 Definition
Origin: iliac crest

Insertion: patella and proximal tibia

Function: adducts and rotates thigh
Term
Semimembranosus
 Definition
Origin: ischium

Insertion: medial epicondyle of femur and proximal tibia

Function: extends thigh
Term
Semitendinosus
 Definition
Origin: ischium

Insertion: tibia

Function: flexes lower leg
Term
Vastus Intermedius
 Definition
Origin: femur

Insertion: patella

Function: extends lower leg
Term
Vastus Lateralis
 Definition
Origin: femur

Insertion: patella

Function: extends lower leg
Term
Vastus Medalis
 Definition
Origin: femur

Insertion: patella

Function: extends lower leg
Term
Gastrocnemius
 Definition
Origin: femur and tendon of plataris

Insertion: calcaneum

Function: extends foot
Term
Plantaris
 Definition
Origin: patella and femur

Insertion: calcaneum

Function: flexes digits
Term
Soleus
 Definition
Origin: proximal fibula

Insertion: calcaneum

Function: extends foot
Term
Tibialis Anterior
 Definition
Origin: proximal tibia and fibula

Insertion: first metatarsal

Function: dorsiflexes foot
Term
Tibialis Posterior
 Definition
Origin: tibia and fibula

Insertion: tarsals

Function: extends foot
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