Prelim | Mouth Flashcards
Other term for the mouth
Buccal/ Oral Cavity
The mouth is formed by:
Cheek
Lips/ Labia
Hard and Soft Palate
Tongue
Compositions of the mouth
Oral vestibule
Oral cavity proper
Forms the lateral walls of the oral cavity
Cheeks
Location of the cheek
External: Skin
Middle: Buccinator muscle and connective tissue
Internal: Mucous membrane (nonkeratinized stratified squamous epithelium)
Fleshy folds surrounding the opening of the mouth
Lips/ Labia
External, middle, and internal composition of the lips
External: Skin
Middle: Orbicularis oris muscle
Internal: Mucous membrane
Middline fold of mucous membrane that attaches each lip to the gums
Labial frenulum
Forms the roof of the mouth
Soft and hard palate
The palates are covered by what?
Mucous membrane
Hard palate vs Soft palate
Hard palate
- Anterior portion
- Forms bony partition between oral and nasal cavities
Soft palate
- Posterior portion
- Arch-shaped muscularis pertition between nasopharynx and orophayrnx
Cleft palate vs cleft lip
Cleft palate: Interior
Cleft lip: Exterior
Conical muscular process
Uvula
During swallowing, these moves superiorly, closing off the nasopharynx and preventing swallowed foods and liquids from entering the nasal cavity
Soft palate and uvula
Lateral to the base of the uvula are two muscular folds that run down the lateral sides of the soft palate, namely:
- Palatoglossal arch
- Palatopharyngeal arch
Palatoglossal arch vs Palatopharyngeal arch
Palatoglossal arch: Anterior, Palate to tongue
Palatopharyngeal arch: Posterior, Palate to pharynx
Tonsils
- Palatine tonsils
- Lingual t onsils
- Adenoids/ Pharyngeal tonsils
What types of muscle is the tongue composed of?
Skeletal muscle
Space between the two muscular folds of the mouth
Fauces
Muscles of the tongue
Extrinsic muscle
Intrinsic muscle
Function of the extrinsic muscles of the tongue
Move the tongue from side to side and in and out to maneuver food for chewing
Function of the intrinsic muscles of the tongue
Alter the shape and size of the tongue for speech and swallowing
Act of swallowing
Deglutition
Where is the lingual frenulum located?
Between the tongue and floor of the mouth
Condition where the lingual frenulum is abnormally short; said to be tongue-tied
Ankyloglossia
What do papillae contain?
- Taste buds (receptors for gustation/ taste)
- Receptors for touch
Receptors for gustation
Taste buds
Increase friction between the tongue and food, making it easier for the tongue to move food in the oral cavity
Papillae
Five primary tastes that can be distinguished
Salty, sour, sweet, bitter, and umami
Forms of papillae
- Filiform
- Fungiform
- Circumvallate
- Foliate
Form an inverted V-shaped row at the back of the tongue. Each of these papillae houses 100–300 taste buds.
Circumvallate papillae
Mushroom-shaped elevations scattered over the entire surface of the tongue that contain about five taste buds each.
Fungiform papillae