Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
45 Cards in this Set
- Front
- Back
|
two parts of the oral cavity
|
oral vestibule
oral cavity proper |
|
|
slit-like space between the cheeks and teeth
|
oral vestibule
|
|
|
oral vestibule contains:
|
-labial frenulae
-pterygomandibular raphe -parotid papilla |
|
|
folds of the mucus membrane between the gingiva and the mucosa of the upper and lower lips
|
labial frenulae
|
|
|
represents a junction area between the buccinator and superior constrictor muscles
|
pterygomandibular raphe
|
|
|
opening of the parotid duct inside the oral vestibule, located opposite the second maxillary molar
|
parotid papilla
|
|
|
boundaries of the oral cavity proper
|
lateral - upper and lower dental arches
posterior - opening in the back of the oral cavity roof - hard and soft palates floor - floor of the mouth |
|
|
connecting area between the oral cavity and pharynx
|
oropharyngeal isthmus
|
|
|
lymphoid tissue, bounded by the palatopharyngeal arch and palatoglossal arch
|
palatine tonsils
|
|
|
hard palate is formed by
|
-palatine process of the maxilla and the horizontal plates of the palatine bone
|
|
|
what goes through the incisive foramen
|
nasopalatine nerve and sphenoalatine a
|
|
|
purpose of greater palatine foramen
|
passage of greater palatine vessels and nerve to supply the mucosa of the hard palate
|
|
|
purpose of the lesser palatine foramen
|
passage of the lesser palatine vessels and nerve to supply structures of the soft palate
|
|
|
small glands located in the mucosa of the hard palate
|
palatine glands
|
|
|
transverse folds of the mucus membrane covering the hard palate
|
palatine rugae
|
|
|
levator veli palatini: origin, insertion, action and nerve supply
|
-from auditory tube to the palatine aponeurosis
-raises soft palate during swallowing -pharyngeal plexus (CN IX, X, XI) |
|
|
tensor veli palatini: orig, insertion, action, nerve supply
|
-from auditory tube to palatine aponeurosis
-tenses soft palate -tendon hooks around the pterygoid hamulus -mandibular divison of CN V |
|
|
palatoglossus: origin, insertion, action, nerve supply
|
-from palatine aponeurosis of soft palate to side of tongue
-forms palatoglossal arch -pharyngeal plexus (CN IX, X, XI) |
|
|
palatopharyngeus: origin, insertion, action, nerve supply
|
-from the palatine aponeurosis of soft palate to upper part of the wall of the pharynx
-forms the palatopharyngeus arch -pharyngeal plexus (CN IX, X, XI) |
|
|
5 muscles of the soft palate
|
-levator veli palatini
-tensor veli palatini -palatoglossus -palatopharyngeus -muscular uvulae |
|
|
fold of the mucus membrane that extends fromt he gingiva to the inferior aspect of the tongue
|
lingual frenulum
|
|
|
located at the base of the lingual frenulum, nipple like structures representing the opening of the ducts of submandibular gland
|
sublingual papilla
|
|
|
one duct from each gland, opens at the sublingual papillae in the floor of the mouth
|
submandibular ducts
|
|
|
raised area on each side of the lingual frenulum formed by the sublingual gland covered by mucus membrane
|
sublingual fold
|
|
|
-smallest and most deeply located of the three salivary glands
-lie in the floor of the oral cavity between the mandible and the genioglossal muscle -each gland has numerous ducts that open in the floor of the mouth |
sublingual gland
|
|
|
location and function of the tongue
|
-partly in the oral cavity proper and part in the oropharynx
-assists in mastication, speech, swallowing, taste and cleaning the oral cavity |
|
|
posterior 1/3 of the tongue
|
root of the tongue
|
|
|
anterior 2/3 of the tongue
-freely movable -anterior pointed part is the apex |
body of the tongue
|
|
|
inverted v-shaped groove on the dorsum of the tongue
-marks separation b/n anterior and posterior |
sulcus terminalis
|
|
|
separates the two halves of the tongue, indicates the site of fusion of the two embryonic lingual buds
|
median groove (sulcus) and septum
|
|
|
-small hair-like structures
-cover the entire surface of the tongue -contain afferent nerve endings sensitive to touch |
filiform papillae
|
|
|
-small mushroom like structures
-scattered among the filiform papillae |
fungiform papillae
|
|
|
-largest papillae
-anterior to sulcus terminale -surrounded by a trench-like structure that contains numerous taste buds |
vallate (circumvallate) papillae
|
|
|
small fold of mucosa along the lateral side of the tongue
|
foliate papillae
|
|
|
lymphoid tissue located on the posterior 1/3 of the tongue
|
lingual tonsil
|
|
|
muscles of the tongue that run longitudinally, vertically and transversely, do not have a bony attachment
|
intrinsic muscles
|
|
|
action and innervation of the intrinsic muscles of the tongue
|
-change the shape of the tongue
-innervated by CN XII |
|
|
genioglossus innervation and action
|
-CN XII
-unilateral contraction pushes tongue to contralateral side -two muscles working together will protrude the tongue |
|
|
paralysis of genioglossus will cause:
|
-tongue to shift posteriorly, could lead to suffocaation
-can happen during general anesthesia |
|
|
hyoglossus innervation and action
|
CN XII
depresses the tongue |
|
|
styloglossus innervation and action
|
CN XII
retrudes tongue |
|
|
palatoglossus innervation and action
|
pharyngeal plexus
elevates posterior part of the tongue |
|
|
motor innervation of the tongue
|
CN XII and pharyngeal plexus
|
|
|
sensory innervation of the tongue
|
anterior 2/3
-lingual - general sensation -chorda tympani - sensory of taste buds posterior 1/3 -CN IX - general sensation and taste incl. vallate papillae -CN X - area around epiglottis |
|
|
blood supply to the tongue
|
lingual a- branch of external carotid a
-veins terminate in the internal jugular v |
