Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on...
-
Upload
tabitha-mason -
Category
Documents
-
view
214 -
download
0
Transcript of Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on...
![Page 1: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/1.jpg)
Muscles of Eyes
Position of eye controlled by six extrinsic muscles
Oculomotor muscles
Originate on the surface of the orbit
Innervation by oculomotor nerve, Trochlear nerve, and Abducens nerve
![Page 2: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/2.jpg)
Inferior rectus- eye looks downMedial rectus- eye rotates mediallySuperior rectus- eye looks upLateral rectus- eye rotates laterallyInferior oblique- eye rolls, looks up and to the sideSuperior oblique- eye rolls, looks down and to the side
![Page 3: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/3.jpg)
Muscles of Mastication
Four muscles move the mandible at the temporomandibular joint
Innervation by Trigeminal nerve
![Page 4: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/4.jpg)
Masseter,Temporalis-elevates mandibleMedial Pterygoid- elevates the mandible and closes the jaws, or moves mandible side to sideLateral Pterygoid- opens jaws, protrudes mandible, or moves mandible side to side
![Page 5: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/5.jpg)
Muscles of the TongueFour muscles used in combinations to move tongue for speech, manipulation of food in preparation for swallowing.
Innervation by Hypoglossal nerve
All muscles of tongue have names that end in glossus
![Page 6: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/6.jpg)
Genioglossus- depresses and protracts tongue
Hyoglossus- depresses and retracts tongue
Palatoglossus- elevates tongue, depresses soft palate
Styloglossus- retracts tongue, elevates side
![Page 7: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/7.jpg)
Muscles of Pharynx
Eight muscles that initiate the swallowing processInnervation by branches of Pharyngeal plexusDivided into three groups by action
ConstrictorsElevatorsPalate
![Page 8: Muscles of Eyes Position of eye controlled by six extrinsic muscles Oculomotor muscles Originate on the surface of the orbit Innervation by oculomotor.](https://reader035.fdocuments.net/reader035/viewer/2022071718/56649e675503460f94b62ecf/html5/thumbnails/8.jpg)
Superior/middle/ inferior constrictor-constrict pharynx to propel bolus into esophagus
Palatopharyngeus, Salpingopharyngeus, Stylopharyngeus- elevate larynx
Levator veli palatini, Tensor veli palatini-elevates soft palate