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Cat Musculature
Origin, Insertion, and Action of the Muscles in the Cat
62
Anatomy
Undergraduate 4
03/02/2010

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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
Cleidomastoid
Definition
Origin: Clavicle
Insertion: Mastoid process
Function: Rotates head
Term
Cricothyroid
Definition
Origin: Cricoid cartilage
Insertion: Thyroid cartilage
Function: Moves the larynx
Term
Digastric
Definition
Origin: Mastoid and jugular processes of occipital
Insertion: Mandible
Function: Depresses lower jaw
Term
Geniohyoid
Definition
Origin: Mandible
Insertion: Hyoid
Function: Draws hyoid caudad
Term
Hyoglossus
Definition
Origin: Hyoid
Insertion: Tongue
Function: Retracts the tongue
Term
Mylohyoid
Definition
Origin: Mandible
Insertion: Median raphe
Function: Elevates the 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
Sternothyroid
Definition
Origin: Manubrium of sternum
Insertion: Thyroid cartilage
Function: Draws larynx caudad
Term
Thryohyoid
Definition
Origin: Thyroid cartilage
Insertion: Hyoid
Function: Draws larynx craniad
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:
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:
Term
Clavotrapezius
Definition
Origin: Nuchal line of skull and dorsal midline of neck
Insertion: Clavicle
Function: Draws humerus craniad
Term
Infraspinatus
Definition
Origin: Infraspinous fossa of scapula
Insertion: Greater tuberosity of humerus
Function: Rotates the humerus
Term
Latissimus Dorsi
Definition
Origin: Lumbodorsal fascia and neural spines of last thoracic and lumbar vertebrae
Insertion: Medial side of humerus
Function: Elevates the arm and draws it caudad
Term
Levator Scapulae Ventralis
Definition
Origin: Occipital bone and transverse process of atlas
Insertion: Metacromion process
Function: Draws scapula craniad
Term
Rhomboideus
Definition
Origin: Neural spines of thoracic vertebrae
Insertion: Ventral border of scapula
Function: Draws scapula dorsally
Term
Rhomboideus Capitis
Definition
Origin: Superior nuchal line
Insertion: Angle of scapula
Function: Draws scapula craniad
Term
Spinodeltoid
Definition
Origin: Spine of the scapula
Insertion: Deltoid ridge of humerus
Function: Elevates and rotates the humerus
Term
Spinotrapezius
Definition
Origin: Neural spines of the thoracic vertebrae
Insertion: Fascia around scapula
Function: Draws scapula dorsally and caudad
Term
Splenius
Definition
Origin: Mid-dorsal fascia of the neck
Insertion: Nuchal line
Function: Turns and elevates head
Term
Supraspinatus
Definition
Origin: Supraspinous fossa
Insertion: Greater tuberosit of humerus
Function: Extends the humerus
Term
Teres minor
Definition
Origin: Axillary border of scapula
Insertion: Greater tuberosity of humerus
Function: Rotates humerus
Term
Coracobrachialis
Definition
Origin: Coracoid process
Insertion: Proximal end of humerus
Function: Adducts humerus
Term
Scalenus Posterior
Definition
Origin: Rib 3
Insertion: Cervical vertebrae
Function: Flexes neck, draws ribs craniad
Term
Scalenus Medius
Definition
Origin: Ribs 6-9
Insertion: Cervical vertebrae
Function: flexes neck, draws ribs craniad
Term
Scalenus Anterior
Definition
Origin: Ribs 2 and 3
Insertion: Cervical vertebrae
Function: Flexes neck, draws ribs craniad
Term
Serratus Ventralis
Definition
Origin: First ten ribs
Insertion: Vertebral border of scapula
Function: Draws scapula ventrally and craniad
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 Brachii
Definition
Origin: Border of glenoid fossa
Insertion: Tuberosity of radius
Function: Flexes forearm
Term
Brachialis
Definition
Origin: Lateral surface of humerus
Insertion: Below semilunar notch of ulna
Function: Flexes forearm
Term
Epitrochlearis
Definition
Origin: Lateral surface of latissimus dorsi
Insertion: Olecranon process of ulna
Function: Flexes forearm
Term
Triceps Brachii
Definition
Origin: Shaft of humerus
Insertion: Olecranon process of ulna
Function: Extends Forearm
Term
Triceps Brachii (Lateral head)
Definition
Origin: Deltoid ridge of humerus
Insertion: Olecranon process
Function: Extends forearm
Term
Triceps Brachii (Medial head)
Definition
Origin: Axillary head of scapula
Insertion: Olecranon process
Function: Extends forearm
Term
Triceps Brachii (Long head)
Definition
Origin: Humerus
Insertion: Olecranon process
Function: extends forearm
Term
Biceps Femoris
Definition
Origin: Ischial tuberosity
Insertion: Proximal thrid of tibia
Function: Flexes the shank
Term
Caudofemoralis
Definition
Origin: Proximal causal 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 thigh
Term
Sartorius
Definition
Origin: Iliac crest
Insertion: Patella and proximal tibia
Function: Adducts and rotates thigh
Term
Semimembranosus
Definition
Origin: Ischium
Insertion: Meidal epicondyle femur and proximl 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 Medialis
Definition
Origin: Femur
Insertion: Patella
Function: Extends lower leg
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