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