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ANAT 411 H&N muscles
| Question | Answer |
|---|---|
| thin sheet of muscle that runs superiorly attaching to the mandible and blends with muscles of the face | platysma |
| superiorly attaches to mastoid process of temporal bone and inferiorly to sternal and clavicular heads | sternocleidomastoid |
| m. of neck innervated by cervical branch of facial n. | platysma |
| actions: bilaterally flexes the neck and unilaterally flexes the neck (ear approaches shoulder of same side) | sternocleidomastoid |
| tested by turning head to opposite side against resistance | sternocleidomastoid |
| superficial muscle of the back that acts on pectoral girdle, posterior boundary of posterior triangle | trapezius |
| actions: acts on shoulder and extends head | trapezius |
| stylohyoid, geniohyoid, ant. and post. belly of digastric, and mylohyoid | suprahyoid muscles |
| which suprahyoid muscles are innervated by the facial n. | stylohyoid and post. belly of digastric |
| which suprahyoid muscles are innervated by the trigeminal n. | ant. belly of digastric, geniohyoid, mylohyoid |
| thyrohyoid, sternohyoid, sternothyroid, sup. and inf. bellies of omohyoid | infrahyoid muscles |
| which hyoid muscles are innervated by ansa cervicalis | infrahyoid muscles |
| action: depresses hyoid bone or thyroid cartilage depending on attachment | infrahyoid muscles |
| ant., middle, and post. scalene muscles | deep muscles of neck |
| levator scapulae, splenius capitus, post. scalene, middle scalene, ant. scalene | floor of post. triangle |
| epicranial aponeurosis, occipitofrontalis frontal and occipital bellies, orbicularis oculi, orbicularis oris, buccinator, temporalis, zygomaticus major, zygomaticus minor | muscles of facial expression |
| the parotid duct pierces which muscle in the face | buccinator |
| masseter, temporalis, medial pterygoid, lateral pterygoid, buccinator, platysma | muscles of mastication |
| group of muscles associated with movement of the TMJ | muscles of mastication |
| 2 muscles that are immediately related to the parotid gland | masseter and temporalis |
| muscle of mastication, actions: elevates the mandible and protrudes the lower jaw | medial pterygoid |
| muscle of mastication; actions: contracts and pulls the articular disc and head of mandible forward onto the articular tubercle, depresses the mandible, and opens the mouth | lateral pterygoid |
| muscle of mastication; forms the muscular component of the cheek and is used every time air expanding the cheeks is forcefully expelled, holds cheeks against alveolar arches to keep food between teeth while chewing | buccinator |
| located in ant. compartment of eye; elevates eyelid superiorly, contributes to lubrication of eye | levator palpebrae superioris |
| group of muscles, involved in movements of the eyeball or raising upper eyelids | extrinsic muscles of eye |
| group of muscles, within the eyeball, control shape of lens and eye of pupil | intrinsic muscles of eye |
| superior rectus, medial rectus, lateral rectus, inferior rectus, superior oblique, inferior oblique, levator palpebrae superioris | extrinsic muscles of eye |
| actions: elevation, adduction, medial rotation innervation: oculomotor n. testing functionality: look laterally and up | superior rectus |
| action: adduction innervation: oculomotor n. testing functionality: look medially | medial rectus |
| action: abduction innervation: abducens n. testing functionality: look laterally | lateral rectus |
| actions: depression, adduction, lateral rotation innervation: oculomotor n. testing functionality: look laterally and down | inferior rectus |
| actions: depression, abduction, and medial rotation innervation: trochlear n. testing functionality: look medially and down | superior oblique |
| actions: elevation, abduction, and lateral rotation innervation: oculomotor n. testing functionality: look medially and up | inferior oblique |
| superior constrictor, middle constrictor, and inferior constrictor make up this | pharynx |
| move the cricothyroid joings, pull thyroid cartilage forward and rotate it down relative to cricoid cartilage, lengthen vocal folds, composed of both an oblique part and straight part, "bowtie" muscles | cricothyroid muscles |
| important landmark for oral cavity, lingual a. enters tongue deep to this muscle, hypoglossal n. and lingual n. enter the tongue superficial to this | hypoglossal |
| smallest skeletal m., arises form pyramidal eminence and its tendon emerges from the eminence, inserts on neck of stapes and innervated by branch of facial n., pulls head of stapes post., protects inner ear from injury to loud noise | stapedius |
| arises from cartilaginous portion of auditory tube, inserts on handle of malleus; innervated by V3 | tensor tympani |
| allows you to scrunch your nose | nasalis |
| action: elevation of upper lip and wing of nose innervation: facial n. "Elvis" m. | levator labii superioris alaeque nasi |
Created by:
emma.scarmon-coyotes
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