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Comparative Anatomy
Cat Muscle Origins and Insertions
Question | Answer |
---|---|
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 |