The oral cavity Flashcards
what are the tissue folds either side of the uvula of the soft palate
arches
the anterior folds either side of the uvula of the soft palate are called
palatoglossal arches
the posterior folds either side of the uvula of the soft palate are called
palatopharyngeal arches
how are the arches created
by muscles of the palate that pass to the tongue and pharynx
what is found in between the arches
collection of lymphoid tissue called the palatine tonsils
what is another name for the opening of the oral cavity - mouth
fauces
the lateral walls of the oral cavity are called
buccinator
what muscle forms a diaphragm in the floor of the mouth
mylohyoid
what is found superior to mylohyoid forming a diaphragm in the floor of the mouth
geniohyoid (inside the mouth)
what is found inferior to mylohyoid forming a diaphragm in the floor of the mouth
anterior belly of digastric (in anterior triangle of neck)
what does ‘genio’ mean
mandible
what does ‘glossus’ mean
tongue
where does mylohyoid attach on the mandible
mylohyoid line of the mandible
where does geniohyoid attach on the mandible
inferior genial tubercle
where does genioglossus attach on the mandible
superior genial tubercle
what is the principle function of the supra-hyoid muscles
elevate the hyoid bone
what is the innervation of mylohyoid
mandibular division of the trigeminal (CN V3)
what is the function of mylohyoid
elevate hyoid bone and oral floor
depress mandible
what is the innervation of the posterior belly of digastric
facial nerve CN VII
what is the innervation of the anterior belly of digastric
mandibular division of the trigeminal (CN V3)
what is the function of the anterior division of the digastric
elevate hyoid or depress mandible
what is the innervation of stylohyoid
facial nerve (CN VII)
what is the function of stylohyoid
elevate hyoid
what is the innervation of geniohyoid
C1 in hypoglossal
what is the function of geniohyoid
elevate hyoid bone
what 2 muscles sit either side of the stylomastoid foramen where the facial nerve exits the skull
posterior belly of digastric
stylohyoid
where does the posterior belly of digastric attach
mastoid process
where does stylohyoid attach
styloid process of temporal bone
what nerve innervates the lower teeth and gums and the muscles of mastication
mandibular division of the trigeminal nerve
why does it make sense that the mandibular division of the trigeminal nerve innervates the mylohyoid and anterior belly of digastric
both attach to the mandible
why is geniohyoid innervated by C1 carried in hypoglossal
sits close to hypoglossal nerve
the majority of the submandibular gland crosses over the surface of what muscle to lie in the floor of the mouth
mylohyoid
where is the sublingual gland
lies entirely in the floor of the mouth under the tongue
where does the parotid gland open
at the upper second molar at each side
where do the submandibular glands open
duct that opens between the 1st and 2nd incisors either side of the frenulum in floor of mouth
where does the sublingual gland open
many small ducts that open directly into the floor of the mouth
what supplies parasympathetic secretomotor to the submandibular gland
CN VII