ORAL CAVITY, PHARYNX, AND ESOPHAGUS Flashcards
the first part of the
digestive tract.
ORAL CAVITY
are muscular structures, formed
mostly by the orbicularis oris MUSCLES
LIPS
are important in the process of
mastication, or chewing
LIPS AND CHEEKS
a large, muscular organ that occupies most
of the oral cavity.
TONGUE
There are __ teeth in the normal adult mouth
32
each
quadrant contains __ central and __ lateral incisor
ONE
___ canine (kā′nīn; dog);
ONE
____ and ____ premolars
(prē-mō′lărz; molaris, a millstone);
FIRST AND SECOND
and ___, _____, and _____
molars
first, second, and third
The teeth of adults are called
PERMANENT TEETH
tooth consists of three regions
CROWN
CUSPS
NECK
Within the
center of the tooth
PULP CAVITY
filled with blood
vessels, nerves, and connective tissue
PULP
The pulp
cavity is surrounded by a living, cellular, calcified tissue
DENTIN
The dentin of the tooth crown is
covered by an extremely hard, acellular substance
ENAMEL
separates the oral
cavity from the nasal cavity and prevents food from passing into the
nasal cavity during chewing and swallowing.
PALATE
palate consists of
two partS
SOFT AND HARD PALATE
three major pairs of salivary (sal′i-vār-ē) glands
(1) the parotid glands,
(2) the submandibular glands, and
(3) the sublingual glands
a digestive enzyme
SALIVARY AMYLASE
Swallowing, or deglutition, can be divided into three phaseS
(1) the voluntary phase,
(2) the pharyngeal phase,
(3) the esophageal phase
