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81 Cards in this Set
- Front
- Back
masseter origin
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inferior border and medial surface of maxillary process of zygomatic bone and the zygomatic arch
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masseter insertion
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angle & lateral surface of ramus of mandible
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masseter innervation
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Masseteric N (of Trigeminal CN V3)
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masseter action
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Elevate mandible
ipsilateral grinding |
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temporalis origin
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triangular muscle with broad attachment to floor of temporal fossa and deep surface of temporal fascia
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temporalis insertion
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narrow attachment to tip and medial surface of coronoid process
anterior border of ramus of mandible |
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temporalis innervation
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Deep Temporal N (of Trigeminal CN V3)
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temporalis action
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Anterior fibers- elevate mandible
posterior fibers- retract mandible |
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Medial Pterygoid origin
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(1) medial surface of lateral ptergoid plate and pyramidal process of palatine bone
(2) tuberosity of maxilla |
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Medial Pterygoid insertion
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medial surface of ramus of mandible, inferior to mandibular foramen
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Medial Pterygoid innervation
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N to the Medial Pterygoid (of Trigeminal CN V3)
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Medial Pterygoid action
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Elevate mandible
contralateral grinding |
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Lateral Pterygoid origin
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(1) Infratemporal surface and crest of greater wing of sphenoid
(2) lateral surface of lateral ptergoid plate |
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Lateral Pterygoid insertion
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Pit on the anterior neck of the mandible
articular disc of the TMJ |
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Lateral Pterygoid innervation
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N to the Lateral Pterygoid (of the Trigeminal CN V3)
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Lateral Pterygoid action
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Protrusion of the mandible
depression of mandible by pulling the head of the mandible forward over the descending slope of the articular tubercle |
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superior rectus innervation
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Oculomotor CN III
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superior rectus action
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Elevate eyeball (look up)
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inferior rectus innervation
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Oculomotor CN III
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inferior rectus action
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Depress eyeball (look down)
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medial rectus innervation
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Oculomotor CN III
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medial rectus action
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Adduct eyeball (look in/medially)
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lateral rectus innervation
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Abducens CN VI
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lateral rectus action
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Abduct eyeball (look out/laterally)
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superior oblique innervation
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Trochlear CN IV
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superior oblique action
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Depress and abduct eyeball (look down and out/laterally)
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Inferior Oblique innervation
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Oculomotor CN III
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Inferior Oblique action
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Elevates and abducts (look up and out/laterally)
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Levator Palpebrae Superioris innervation
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Oculomotor CN III
Inferior part (Superior Tarsal Muscle): Postganglionic Sympathetic fibers of Carotid Plexus |
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Levator Palpebrae Superioris action
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Elevate superior eyelid
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Tensor Vali Palatini innervation
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Medial pterygoid n. (branch of CN V-3) via otic ganglion
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Tensor Vali Palatini action
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Tenses soft palate (to change tone of voice), opens mouth of pharyngotympanic tube during swallowing and yawning
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Levator Veli Palatini innervation
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Pharyngeal branch of CN X via pharyngeal plexus
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Levator Veli Palatini action
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Elevates soft palate during swallowing and yawning
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Palatoglossus innervation
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Vagus nerve CN X
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Palatoglossus action
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Elevates posterior part of tongue
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Palatopharyngeus innervation
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Pharyngeal branch of CN X via pharyngeal plexus
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Palatopharyngeus action
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Tenses soft palate and pulls walls of pharynx superiorly, anteriorly, and medially during swallowing
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Musculus Uvulae innervation
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Pharyngeal branch of CN X via pharyngeal plexus
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Musculus Uvulae action
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Shortens uvula and pulls it superiorly, unilateral action sweeps uvula to allow for clearance of phlegm – wipes posterior pharyngeal wall from side to side
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Genioglossus origin
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via a short tendon from superior part of mental spine of mandibl
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Genioglossus insertion
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entire dorsum of tongue
inferiormost and posteriormost fibers attach to body of hyoid bone |
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Genioglossus innervation
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hypoglossal N (CN XII)
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Genioglossus action
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depresses and protrudes the tongue
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Hyoglossus innervation
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hypoglossal N (CN XII)
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Hyoglossus action
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depresses and retracts tongue
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Styloglossus innervation
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hypoglossal N (CN XII)
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Styloglossus action
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retracts and elevates the sides of tongue to create a trough for swallowing
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superior pharyngeal constrictor insertion
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insert into the median raphe posteriorly
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superior pharyngeal constrictor innervation
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Vagus nerve CN X
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superior pharyngeal constrictor action
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constrict walls of pharynx during swallowing
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middle pharyngeal constrictor insertion
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insert into the median raphe posteriorly
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middle pharyngeal constrictor innervation
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Vagus nerve CN X
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middle pharyngeal constrictor action
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constrict walls of pharynx during swallowing
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inferior pharyngeal constrictor insertion
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insert into the median raphe posteriorly.
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inferior pharyngeal constrictor innervation
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Vagus nerve CN X
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inferior pharyngeal constrictor action
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constrict walls of pharynx during swallowing
(Cricopharyngeus part of this muscle relaxes during swallowing. This action allows food and fluid to enter the upper end of the esophagus) |
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tensor tympani muscle action
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functions to dampen or attenuate vibration of tympanic membrane
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tensor tympani muscle innervation
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CN V3
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Stapedius innervation
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CN VII facial nerve
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Stapedius action
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functions to prevent excessive movement
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External intercostals origin
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Inferior border of ribs
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external intercostals insertion
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Fibers run inferomedially to attach onto the superior border of the rib below
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external intercostals innervation
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Intercostal N
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external intercostals action
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Elevate ribs during forced inspiration
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internal intercostals origin
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inferior border of ribs
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internal intercostals insertion
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Fibers run inferolaterally to attach onto the superior border of the rib below
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internal intercostals innervation
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Intercostal N
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internal intercostals action
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Depresses ribs during forced expiration
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innermost intercostals origin
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inferior border of ribs
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innermost intercostals insertion
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Fibers run inferolaterally to attach onto the superior border of the rib below
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innermost intercostals innervation
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intercostal nerve
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innermost intercostals action
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Depresses ribs during forced expiration`
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Transversus Thoracis origin
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posterior surface of lower sternum
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Transversus Thoracis insertion
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internal surface of costal cartilages 2-6
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Transversus Thoracis innervation
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intercostal nerve
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Transversus Thoracis action
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depresses the ribs
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origin of tensor tympani muscle
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Superior surface of the cartilaginous part of the pharyngotympanic tube
greater wing of the sphenoid petrous part of the temporal bone |
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insertion of tensor tympani muscle
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handle of the malleus
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origin of stapedius muscle
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Apex of the pyramidal eminence
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insertion of stapedius muscle
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neck of stapes
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