Anatomy of Speech Flashcards
what is another name for swallowing?
deglutition
what is another name for chewing?
mastication
what gives the sign of malnutrition that is sunken cheeks?
loss of the buccal fat pad
what muscles open the mouth?
lateral pterygoid
what muscles close the mouth?
medial pterygoid
temporalis
masseter
what muscle acts as a sphincter around the mouth?
orbicularis oris
what muscle assists in aligning the food bolus between the dentition?
the buccinator
what are the two groups of muscles of the tongue?
intrinsic
extrinsic
what do the intrinsic muscles of the tongue do?
change the shape of the tongue
what do the extrinsic muscles of the tongue do?
control the movement of the tongue in the oral cavity
what type of muscle are all muscles of the tongue?
skeletal
what are the four extrinsic muscles of the tongue?
palatoglossus
styloglossus
genioglossus
hyoglossus
what is the innervation of the extrinsic muscles of the tongue?
CN XII
palatoglossus = CN X
what do the muscles of the soft palate work to do?
move and tighten the fibrous palatine aponeurosis
what is the midline process of the posterior soft palate called?
the uvula
what happens to the soft palate when you swallow?
elevates and tenses
what nerve supplies the muscles of the soft palate and which is the exception?
CN X
tensor veli palatini = CN V3
what are the five skeletal muscles of the soft palate?
palatoglossus palatopharyngeus musculus uvulae tensor veli palatini levator veli palatini
what does palatoglossus do?
depresses the soft palate
what does musculus uvulae do?
shortens the uvula
what does palatopharyngeus do?
elevates the pharynx
depresses the soft palate
what does tensor veli palatini do?
tenses the palatine aponeurosis
what does levator veli palatini do?
lifts the palatine aponeurosis
what controls production of saliva?
parasympathetics
what are the three pairs of major salivary glands?
parotid
submandibular
sublingual
where does the parotid gland secrete into the oral cavity?
beside the upper 2nd molar
where does the submandibular gland secrete into the oral cavity/
via the lingual caruncle
where does the sublingual gland secrete into the oral cavity?
via several ducts below the tongue
what are the two types of pharyngeal muscles?
outer circular muscle
inner longitudinal muscle
what three muscles make up the outer circular layer of the pharynx?
superior constrictor
middle
inferior
what type of muscle are the pharyngeal constrictor muscles?
skeletal
what three muscles make up the inner pharyngeal muscles?
stylopharyngeus
salpingopharyngeus
palatopharyngeus
what nerve innervates the pharyngeal muscles and what is the exception?
CN X
stylopharyngeus = CN IX
what nerve innervates all intrinsic muscles of the larynx?
CN X
what is the action of the muscle cricothyroid?
tenses the vocal ligament
what is the action of the muscle thyroarytenoid?
relaxes the vocal ligament
what is the action of the muscle lateral cricoarytenoid?
adducts the vocal ligaments
what is the action of the muscle arytenoid?
adducts the vocal ligaments
what is the action of the muscle posterior cricoarytenoid?
abducts the vocal cords
