Muscles-1.pdf

Muscles of Facial Expression Deep Muscles of the Lip and Nose 6. Buccinator (buccal/ buccae = cheeks) a. Origin: Mandible and maxilla Superficial Muscles 1. Orbic...

Muscles of Facial Expression Deep Muscles of the Lip and Nose 6. Buccinator (buccal/ buccae = cheeks) a. Origin: Mandible and maxilla Superficial Muscles 1. Orbicularis oris b. Insertion: Mandible and maxilla a. Origin: Area surrounding the lip c. Action: Return food from 1. Sphincter (tight bond) colli (in the b. Insertion: skin of the lip vestibule to masticatory region neck) superficialis (near the surface)//; c. Action: purses the lip d. Innervation Cranial Nerve 7 a. Origin: Mid dorsal raphae d. Innervation: cranial nerve 7 (midline of neck) 7. Mentalis b. Insertion: Ventral neck and 2. Zygomaticus (smiling muscle) a. Origin: Ventral foramen near around lower jaw a. Origin: Zygomatic arch the Insertion: Mental symphysis c. Action: Move the skin of the b. Insertion: Angle of mouth b. chin neck located just below the skin c. Action: Draw the mouth caudal c. Action: Elevate the lower lip d. Innervation: Cranial Nerve 7 and dorsally and chin d. Innervation: Cranial Nerve 7 d. Innervation Cranial Nerve 7 2. Platysma (flat surface) a. Origin: Midline of the neck 3. Incisivus superioris et inferioris 8. Levator naso labialis b. Insertion: Corner of lip and a. Origin: Alveolar border of a. Origin: Maxilla and nasal bone cheek mandible and incisive bone b. Insertion: Lateral part of upper c. Action: Draw the lip caudally b. Insertion: Upper and lower lip lip and nostril and tenses the skin c. Action: Move the lip (elevate or c. Action: Elevate the upper lip d. Innervation: Cranial Nerve 7 depression) and dilate nostril d. Innervation: Cranial Nerve 7 d. Innervation: Cranial Nerve 7 3. Sphincter colli profundus (deep) a. Origin: Base of ear 4. Levator labii superioris *3 muscles kapag nagagalit aso* b. Insertion: Caudal part of neck a. Origin: Dorsal to the caninus a. levator labii superioris c. Action: Tense and move the (orbit) b. caninus skin of the neck b. Action: Elevate upper lip c. levator naso labialis d. Innervation: Cranial Nerve 7 5. Caninus a. Origin: Maxilla b. Insertion: Nasal alach and nas c. Action: Raise the upper lip and flare the nostril d. Innervation: Cranial Nerve 7 Deep Muscles of the Eyelids, 5. Orbitales Forehead, & Ears a. Origin: Medial palpebral 3. Pterygoideus lateralis (responsible ligament (maxilla) for side-to-side movement both) 1. Orbicularis oculi b. Insertion: Lateral palpebral a. Origin: Sphenoid bone a. Origin: Medial palpebrae raphae b. Insertion: Mandible (eyelid) ligament c. Action: Close the eyelid c. Action: Closes the mouth b. Insertion: Palpebral raphae d. Innervation: Cranial Nerve 7 d. Innervation: Trigeminal (middle) Nerve/CN 5 c. Action: Close the eyelid 6. Occipitalis d. Innervation: Cranial Nerve 7 a. Origin: Nuchal line 4. Pterygoideus medialis (for closing b. Insertion: Galea aponeurotica the mouth) 2. Retractor (retract) anguli (angle) (connection between muscle to a. Origin: Pterygoid palatine oculi (eye) lateralis (location) muscle) sphenoid bone a. Origin: Zygomatic arch c. Action: Pull the scalp b. Insertion: Mandible b. Insertion: Lateral part of lower posteriorly and elevate the c. Action: Closes the mouth eyelid eyebrow d. Innervation: Trigeminal c. Action: Retract and elevate the d. Innervation: Cranial Nerve 7 Nerve/CN 5 lateral part of lower eyelid Innervation: Cranial Nerve 7 Muscles of Mastication 5. Digastricus (muscle that opens mouth) 3. Levator anguli oculi medialis 1. Masseter a. Origin: Occipital bone a. Origin: Maxilla a. Origin: Zygomatic arch b. Insertion: Mandible b. Insertion: Medial canthus b. Insertion: Mandible c. Action: Opens the mouth (kanto) and skin of upper eyelid c. Action: Close the mouth d. Innervation: Trigeminal c. Action: Lift the medial part of d. Innervation: Trigeminal Nerve/CN 5 upper eyelid Nerve/CN 5 d. Innervation: Cranial Nerve 7 *most developed* 2. Temporalis (strongest and largest) in carnivores: 4. Levator palpebrae superioris a. Origin: Parietal frontal a. temporalis a. Origin: Apex of the orbit (temperal fossa) b. masseter b. Insertion: Upper eyelid b. Insertion: Mandible in herbivores: c. Action: Lift the palpebra (upper c. Action: Closes the mouth a. pterygoideus eyelid) d. Innervation: Trigeminal d. Innervation: Cranial Nerve 3 Nerve/CN 5 Muscles of Tongue Muscles of Bulbus Oculi-External d. Innervation: CN 3 1. Styloglossus 1. Dorsal oblique 6. Medial rectus a. Origin: Stylohyoid a. Origin: Optic canal a. Origin: Common ring tendon b. Insertion: Tongue b. Insertion: Sclera (white portion b. Insertion: Limbus (area between c. Action: Depression of tongue of eyes) cornea and sclera) d. Innervation: Hypoglossal c. Action: Rotation of eyeball c. Action: Movement of eyeball Nerve/CN 12 d. Innervation: CN 4 d. Innervation: CN 3 2. Hypoglossus 2. Ventral oblique 7. Retractor bulbi a. Origin: Hyoid bone a. Origin: Between palatine and a. Origin: Common tendinous ring b. Insertion: Tongue maxillary bone and lacrimal b. Insertion Sclera c. Action: Retract and depress b. Insertion: Sclera c. Action: Retract eyeball tongue c. Action: Rotation of eyeball d. Innervation: CN 6 d. Innervation: Hypoglossal d. Innervation: CN 3 Nerve/CN 12 (all) 8. Orbicularis 3. Dorsal rectus a. Origin: Frontal maxilla lacrimal 3. Genioglossus a. Origin: Optic canal b. Insertion: Palpebra a. Origin: Mandible (genio) b. Insertion: Sclera c. Action: Close the eyelid and b. Insertion: Tongue hyoid bone c. Action: Produce movement of compress the lacrimal sac c. Action: Extension and eyeball d. Innervation: CN 7 depression of tongue d. Innervation: CN 3 d. Innervation: Hypoglossal Nerve/CN 12 4. Lateral rectus a. Origin: Bottom of orbital cavity 4. Lingual proper (tongue itself) b. Insertion: Sclera a. Origin: Tongue c. Action: Movement of eyeball b. Insertion: Tongue d. Innervation: CN 6 c. Action: Complex movement of e. tongue 5. Ventral rectus d. Innervation: Hypoglossal a. Origin: Optic canal Nerve/CN 12 b. Insertion: Sclera c. Action: Produce movement of eyeball Muscles of Hyoid Apparatus 5. Geniohyoideus 2. Rectus capitis dorsalis major a. Origin: ntermandibular a. Origin: Axis 1. Sternohyoideus articulation b. Insertion: Occipital bone a. Origin: Sternum b. Insertion: Basihyoid bone c. Action: Extended the atlanto b. Insertion: Basihyoid bone c. Action: Draw the hyoid occipital joint c. Action: Pull the basihyoid bone apparatus cranially d. Innervation: Cervical Spinal and tongue caudally d. Innervation: CN 12 Nerve d. Innervation: Cervical spinal e. nerve and Hypoglossal 6. Occipitohyoideus 3. Rectus capitis dorsalis minor a. Origin: Occipital bone a. Origin: Axis 2. Thryohyoideus b. Insertion: Stylohyoid bone b. Insertion: Occipital bone a. Origin: Thyroid cartilage c. Action: Move the stylohyoid c. Action: Extended the atlanto b. Insertion: Hyoid bone bone caudally occipital joint c. Action: Draw the hyoid d. Innervation: CN 7 d. Innervation: Cervical Spinal caudally and dorsally Nerve d. Innervation: 12 (mainly) spinal 7. Stylohyoideus nerve a. Origin: Temporal bone 4. Rectus capitis lateralis b. Insertion: Hyoid apparatus a. Origin: Wing of atlas 3. Mylohyoideus c. Action: Elevate and draw the b. Insertion: Paracondylar process a. Origin: Mandible hyoid bone of occipital bone b. Insertion: Basihyoid bone d. Innervation: CN 7 c. Action: Lexion of atlanto c. Action: Rise the floor of the occipital joint mouth and draw the hyoid d. Innervation: Cervical Spinal appratus rostrally Muscles of Cervical Vertebrae Nerve d. Innervation: CN 5 1. Rectus (straight muscle) capitis 5. Obliquus (diagonal) capitis cranialis 4. Ceratohyoideus (head) ventralis a. Origin: Atlas a. Origin: Thyrohyoid bone a. Origin: Atlas b. Insertion: Occipital bone b. Insertion: Ceratohyoid b. Insertion: Basioccipital bone c. Action: Rotation and lateral c. Action: Decrease the angle c. Action: Lexion of atlanto flexion of head between thyro and cerato occipital joint d. Innervation: Cervical Spinal d. Innervation: CN 9 d. Innervation: Cervical Spinal Nerve Nerve 6.Obliquus capitis caudalis a. Origin: Axis b. Insertion: Occipital bone c. Action: Extend and laterally flex the head d. Innervation: Cervical Spinal Nerve 7. Splenius capitis a. Origin Spinous process of cervical and thoracic b. Insertion: Mastoid process of temporal bone c. Action: Rotation or movement of head and neck d. Innervation: Cervical Spinal Nerve 8. Longus capitis a. Origin: Transverse process of cervical vertebra b. Insertion: Occipital bone c. Action: Flex the head and neck d. Innervation: Cervical Spinal Nerve