Oral cavity Flashcards
The oral cavity is also called the _______ cavity and opens into the __________.
Buccal cavity
Oropharynx
What kind of epithelium lines the oral cavity?
nonkeratinized stratified squamous epithelium
What are the boundaries of the oral cavity?
cheeks (buccinator muscle), had/soft palate, tongue, and lips
What is the vestibule of the oral cavity?
Area between checks and teeth (where your toothbrush goes)
What is the oral fissure?
Anterior opening between the lips
What is the posterior opening into throat?
Fauces
What are the two arches in the mouth? Which is anterior?
Anterior: Palatoglossal arch
Posterior: Palatopharyngeal arch
What is the uvula and what does it do?
A finger-like projection from the palatoglossal arch
Helps to keep food in the mouth until you’re ready to swallow
The arches of the mouth are _______ folds.
Muscular
________ ____ marks the beginning of pharynx
Palatopharyngeal arch
Where is the palatine tonsil?
Between the two arches
What is gingiva?
Gums around the teeth
What is a frenulum?
A small fold of tissue
What 3 frenulums does Beachy want us to know?
Lingual frenulum- Attached tongue to floor of mouth, in the middle
Superior/Inferior labial frenulum- attaches lip on inside
What are the two areas of the lips?
Cutaneous area- colored like the rest of the face (think under mustache)
Red area- Blood capillaries near the surface, hence red color
Hairless region, think lipstick area
The tongue is ______ muscle.
Skeletal
What are the intrinsic muscles of the tongue?
Contained completely within the tongue, alter the shape for speech and swallowing
What are the extrinsic muscles of the tongue and what do they do?
Hyoglossus, retracts tongue
Styloglossus, retracts tongue
Genioglossus, protrude tongue
Palatoglossus, bring down sides of tongue
Where are the lingual and pharyngeal tonsils?
Lingual- Just posterior to circumvallate papillae
Pharyngeal- In posterior nasopharynx
What are the three salivary glands?
Parotid
Submandibular
Sublingual
Where is the parotid gland?
Between skin and masseter muscle, anterior to ear
What is the largest salivary gland?
Parotid
What does the parotid produce?
Salivary amylase
What does salivary amylase do?
digests carbohydrates
What gland does the mumps attack?
Parotid salivary gland
Where is the parotid duct?
Passes over masseter, pierces buccinator, and opens near 2nd molar into mouth
Where is the submandibular gland? How big is it?
Located along medial aspect of mandibular body
Size of a walnut
What does the submandibular gland produce?
Produces some salivary amylase, some mucus, a mixed gland
Where is the duct of the submandibular gland?
Duct goes along lingual frenulum
What gland has a serous demilune?
Submandibular
What is a serous demilune?
A crescent-shaped area of serous (enzyme-secreting) cells
A “cap” on top of acinus that secretes enzymes into lumen
What does serous demilune indicate?
A mixed gland
Where is the sublingual gland?
Anterior to submandibular gland under the tongue
What does the sublingual gland secrete? How big is it?
Secretes mostly mucus, is the size of an almond
What are the 2 mixed salivary glands?
Sublingual
Submandibular
How does product get from the sublingual gland to the mouth?
Opens via 10-12 ducts into the floor of the mouth
