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Comparative Anatomy

Cat Muscle Origins and Insertions

QuestionAnswer
Latissimus Dorsi Origin: Lumbar vertebrae Insertion: Humerus Action: Pull's forelimb forward
Masseter Origin: Zygomatic arch Insertion: Masseteric fossa/mandible Action: Elevation of mandible
Mylohyoid Origin: Mandible Insertion: Median raphe Action: Elevates floor of mouth
Digastric Origin: Mastoid and jugal processes Insertion: Mandible Action: Depresses mandible
Temporalis Origin: Temporal bone Insertion: Coronoid process of mandible Action: Elevates mandible
Geniohyoid Origin: Mandible Insertion: Hyoid body Action: Protracts hyoid
Hyoglossus Origin: Hyoid Insertion: Tongue Action: Retracts and depresses tongue
Thyrohyoid Origin: Thyroid cartilage of the larynx Insertion: Hyoid bone Action: Protracts larynx
Sternohyoid Origin: Costal cartilage Insertion: Thyroid cartilage of larynx Action: Retracts Larynx
Spinodeltoid Origin: Spine of scapula Insertion: Deltoid ridge of humerus Action: Retracts humerus, rotates outward
Acromiodeltoid Origin: Scapula Insertion: Spinodeltoid muscle Action: Retracts humerus, rotates laterally
Triceps Brachii Origin: Humerus or scapula Insertion: Olecranon process Action: Extends forearm
Brachialis Origin: Humerus Insertion: Ulna semilunar notch Action: Flexes forearm
Clavobrachialis Origin: Clavicle and raphe Insertion: Ulna Action: Flexes forearm
Xiphihumeralis Origin: Raphe near xiphoid process Insertion: Humerus Action: Forelimb towards midline
Pectoralis Minor Origin: Sternebrae Insertion: Humerus Action: Forelimb towards midline
Pectoralis Major Origin: Sternum and midventral raphe Insertion: Humerus Action: Humerus toward midline
Pectoantebrachialis Origin: Manubrium Insertion: Antebrachium Action: Forelimb toward midline
Subscapularis Origin: Subscapular fossa Insertion: Lesser tuberosity of humerus Action: Adducts humerus
Teres Major Origin: Caudal boarder of scapula Insertion: Proximal end of humerus Action: Retracts humerus, rotates medially
Infraspinatus Origin: Infraspinous fossa Insertion: Greater tuberosity of humerus Action: ROtates humerus laterally
Serratus Ventralis Origin: Ribs Insertion: Scapula Action: Scapula towards thoracic wall
Supraspinatus Origin: Supraspinous fossa Insertion: Greater tuberosity of humerus Action: Protracts humerus
Splenius Origin: Middorsal line of neck Insertion: Occipital bone Action: Elevates or extends head
Clavotrapezius Origin: Lambdoidal ridge Insertion: Clavicle Action: Protracts humerus
Acromiotrapezius Origin: Vertebrae Insertion: Spine of scapula Action: Adduct scapula
Spinotrapezius Origin: Spinous process Insertion: Supraspinous and infraspinous muscles Action: Scapula dorsal and caudal
Rhomboideus Complex
Caudofemoralis Origin: Caudal vertebrae Insertion: Patella
Biceps Femoris Origin: Ischial Tuberosity Insertion: Tibia and patella
Sartorius Origin: Ilium Insertion: Patella, Tibia, Fascia
Gluteus Maximus Origin: Sacral and caudal vertebrae Insertion: Femur
Gluteus Medius Origin: Ilium, Sacral, Caudal Insertion: Femur
Semitendinosus Origin: Ischial Tuberosity Insertion: Tibia
Semimembranosus Origin: Ischial Tuberosity Insertion: Femur
Adductor Femoris Origin: Pubis and Ischium Insertion: Femur
Adductor Longus Origin: Pubis Insertion: Femur
Gracilis Origin: Ischium and Pubis Insertion: Tibia
Pectineus Origin: Pubis Insertion: Femur
Vastus Lateralis
Vastus Intermedius
Rectus Femoris
Vastus Medialis
Gastrocnemius
Created by: LionsandGiants
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