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Muscles - function
Head & Neck Muscles - function
70
Anatomy
Professional
11/27/2010

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Cards

Term
Buccinator
Definition
compresses cheek
Term
Depressor anguli oris
Definition
depresses buccal angle laterally
Term
Depressor labii inferioris
Definition
draws lower lip downward
Term
Frontalis
Definition
protracts the scalp or elevates eyebrows & nose
Term
Levator labii superioris
Definition
raises & everts upper lip
Term
Levator anguli oris
Definition
raises angle of mouth
Term
Mentalis
Definition
raises lower lip
Term
Nasalis
Definition
transverse fibers compress & alar fibers widen the nasal aperature
Term
Orbicularis oculi
Definition
palpebral sphinchter
Term
Orbicularis oris
Definition
oral sphinchter
Term
Platysma
Definition
wrinkles the anterior nuccal skin
Term
Zygomaticus major
Definition
raises the buccal angle
Term
Inferior oblique
Definition
elevation, abduction and extorsion of the eye
Term
Inferior rectus
Definition
depression, adduction & extorsion of eye
Term
Lateral rectus
Definition
abduction of the eye
Term
Levator palpebrae superioris
Definition
elevation of the upper lid
Term
Medial rectus
Definition
adduction of the eye
Term
Superior oblique
Definition
abduction, depression & intorsion of the eye
Term
Superior rectus
Definition
elevation, adduction & intorsion of the eye
Term
Masseter
Definition
elevation, protraction and retraction (deep fibers) the mandible
Term
Temporalis
Definition
elevation & retraction (posterior aspect of the muscle) of the mandible
Term
Lateral Pterygoid
Definition
protraction of the mandible & acts with the ipsilateral medial pterygoid to rotate the mandible to produce the side-to-side movements during trituration of food
Term
Medial Pterygoid
Definition
elevation of the mandible & acts with the ipsilateral lateral pterygoid to rotate the mandible to produce the side-to-side movements during trituration of food
Term
Anterior digastric
Definition
depression of the mandible or elevation of the hyoid
Term
Posterior digastric
Definition
depression of the mandible or elevation of the hyoid
Term
Geniohyoid
Definition
elevation & anterior displacement of the hyoid; or depression of mandible with fixed hyoid
Term
Longus capitis
Definition
flexion of the head & neck
Term
Longus coli
Definition
flexion of the neck
Term
Mylohyoid
Definition
elevation of the floor of the oral cavity
Term
Omohyoid
Definition
depression of the hyoid
Term
Scalenus anterior
Definition
elevation of 1st rib (during forced inspiration) & flexion & rotation of the neck
Term
Scalenus medius
Definition
elevation of 1st rib (during forced inspiration) & lateral flexion of the neck
Term
Scalenus posterior
Definition
elevation of the rib (during forced inspiration)
Term
Sternocleidomastoid
Definition
flexion of the head & neck, & contralateral rotation of the head
Term
Sternohyoid
Definition
depresses the hyoid
Term
Sternothyroid
Definition
depression of the elevated larynx
Term
Stylohyoid
Definition
elevation & retraction of the hyoid
Term
Thyrohyoid
Definition
depression of the hyoid or elevation of the thyroid cartilage
Term
Splenius capitis
Definition
extension & lateral flexion of the head
Term
Splenius cervicis
Definition
together extend neck, single side does ipsilateral rotation
Term
Longissimus capitis
Definition
extension & ipsilateral rotation of the head
Term
Semispinalis capitis
Definition
extension of the head
Term
Rectus capitis posterior major
Definition
extension of the head
Term
Rectus capitis posterior minor
Definition
extension of the head
Term
Obliquus capitis inferior
Definition
ipsilateral rotation of the head
Term
Obliquus capitis superior
Definition
posterolateral flexion of the head
Term
Genioglossus
Definition
protrusion of the tongue
Term
Hyoglossus
Definition
depression of the tongue
Term
Styloglossus
Definition
elevation & retraction of the tongue
Term
Levator veli palatini
Definition
elevates the soft palate
Term
Musculus uvulae
Definition
aids in palatopharyngeal closure
Term
Palatoglossus
Definition
elevation of the root of the tongue & approximation of the palatoglossal folds
Term
Palatopharyngeus
Definition
elevation of the pharynx & approximation of the palatopharyngeal folds
Term
Tensor veli palatini
Definition
unilateral deviation & bilateral tension of the soft palate
Term
Inferior constrictor
Definition
general sphinchteric & peristalic action in swallowing
Term
Middle constrictor
Definition
general sphinchteric & peristalic action in swallowing
innervation- pharyngeal plexus (X)
Term
Superior constrictor
Definition
general sphinchteric & peristalic action in swallowing
Term
Salpingopharyngeus
Definition
elevation of the superior lateral aspect of the pharyngeal wall
Term
Stylopharyngeus
Definition
elevation of the pharyngeal wall
Term
Aryepiglotticus
Definition
closes the aryepiglottic folds
Term
Lateral cricoarytenoid
Definition
closes the glottis (adducts the vocal folds)
Term
Posterior cricoarytenoid
Definition
opens the glottis (abducts the vocal folds)
Term
Cricothyroid
Definition
tenses the vocal folds
Term
Interarytenoids
Definition
closes glottis & assists in closing aryepiglottic folds
Term
Thyroarytenoid
Definition
closes glottis or slackens vocal folds
Term
Thyroepiglotticus
Definition
widens glottis
Term
Vocalis
Definition
slackens tensed vocal ligaments for changes in pitch
Term
Stapedius
Definition
dampens vibrations of the stapes
Term
Tensor tympani
Definition
dampens movement of the malleus
Term
Levator labii superioris aleque nasi
Definition
raises & everts upper lip
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