CHAPTER 10 - Landmarks of the face and oral cavity Flashcards
Ala of the nose
winglike tip on the outer side of each nostril
philtrum
rectangular area between the two ridges running from under the nose to the midline of the lip
tragus
cartilaginous projection on the external opening of ear
root
bridge of the nose
anterior naris
nostril
mental protuberance
chin
angle of the mandible
lower posterior of the ramus
zygomatic arch
prominence of the cheek
lips are medically called what
labia
vermillion border
darker border of color around the lips
labial comissure
corner of the mouth where upper and lower lips join
nasolabial sulcus
(smile lines) groove that extends upward between labial of commissure and nasal ala
changes in the vermillion border may be caused by what?
cancer
angular cheilosis
inflammation or cracking at the corners of mouth
caused by vitamin b12 deficiency
the oral cavity is lined by what?
mucus membrane tissue
How many areas does the oral cavity have?
two
what are the two areas of the oral cavity?
vestibule
oral cavity proper
where is the vestibule?
space between teeth and inner mucosal lining of lips and cheeks (space between lips and cheeks)
where is the oral cavity proper?
space on the tongue side within the upper and lower dental arches (space in the middle between tongue and soft palate)
mucobuccal fold
The base of each vestibule, where the buccal mucosa meets the alveolar mucosa
(where the bone and the cheek come together.)
linea alba
white ridge of raised tissue that extends horizontally where the maxillary and mandibular teeth come together
frenum
narrow band of tissue that connects two structures
the lip and gingiva is connected by what?
labial frenulum
buccal frenulum
connects the cheeks
labial frenulum
connects the lips
lingual frenulum
connects the tongue to the floor of the mouth
surfaces of the attached gingiva and interdental papillae are presented in what texture?
stippled and resemble the rind of an orange.
free gingiva
the gums closest to the teeth (tissues from the top of the gingival margin to the base of the gingival sulcus)
attached gingiva
the gums above the free gingiva that is attached in and firm in place
what is the gingiva between the teeth called?
interdental gingiva
what color gingiva is NOT healthy?
purple
what is sulcus?
space/pocket between the tooth and the free gingiva
3 mm in space is healthy
what is interdental gingiva?
gingiva between the teeth that fills the interproximal embrasure
the triangle space covered by gingiva
what are oral surfaces covered by?
oral mucosa
where is the incisive papilla?
behind the maxillary central incisors.
a pear shaped pad of tissue that covers the incisive foramen
what is palatal rugae?
irregular ridges or folds of the masticatory maxillary mucosa
what is the soft palate?
moveable posterior third of the palate
what is fauces?
holds the soft palate together
strongest muscle in the body and the most versatile organ
tongue
functions of the tongue
positions the food while eating
speaking
tasting and tactile sensations
cleansing the oral cavity
where is the gag reflex?
membranes of soft palate, fauces and posterior portion of the tongue
where are tastebuds located?
located in the fungiform papillae and inside the large vallate papillae
where is the vallate papillae
posterior dorsum of the tongue where it forms a v shape row.
