The Tongue and Salivary Glands Flashcards
the functions of the tongue are?
moving food during chewing
facilitating speech
swallowing
what are the three types of tongue papillae?
- filiform
- fungiform
- vallate
which papillae has taste buds present?
fungiform
vallate
the dorsal surface of the posterior 1/3 of the tongue has surface elevations produced by submucosal lymphoid tissue. what are they called?
lingual tonsils
name the fold of mucous membrane that fixes the tongue to the floor of the mouth
lingual frenulum
describe the general sensory innervation (touch, pain, temperature) of the tongue
anterior 2/3 - mandibular division of trigeminal nerve
posterior 1/3 - glossopharyngeal (IX) nerve.
describe the special sensory innervation (taste) of the tongue
anterior 2/3 > chorda tympani branch of facial nerve
posterior 1/3 > glossopharyngeal (IX) nerve
what are the four extrinsic tongue muscles called?
girl how sick prrr
genioglossus
hyoglossus
styloglossus
palatoglossus
action of genioglossus?
protrudes tongue to opposite side
action of hyoglossus
depresses and retracts the tongue
action of styloglossus
retracts and elevates the tongue
action of palatoglossus
elevates the posterior aspect of the tongue
what is the innervation of the extrinsic tongue muscles?
- hypoglossal nerve (XII) innervateS all the muscles EXCEPT for palatoglossus which has vagal innervation.
what are the two parts of the submandibular gland?
superficial arm and deep arm
which muscle seperates the superficial and deep arm of the submandibular salivary gland?
mylohyoid
name the artery that grooves under the surface of the submandibular salivary gland
facial artery
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del
where does the submandibular salivary duct open into?
the base of the frenulum bilaterally
where do the ducts of the sublingual salivary gland lie?
on the floor of the oral cavity, underneath the tongue