Teeth Quiz (include mouth) Flashcards
Receives food by ingestion, breaks food into smaller particles by mastication. Mixes food with saliva.
Mouth (oral cavity)
Helps hold food in mouth. Keeps food in place for chewing. Formation of words for speech.
Lips and Cheeks
Determine temperature and texture of foods. Are folds of skeletal muscle. Covered with a thin, transparent epithelium. Reddish in color. Contain numerous sensory receptors which help determine temp of foods.
Lips
The reddish color of the lips is composed of what underlying the epithelium?
blood vessels
Main component is the buccinator muscle. Covered by skin and subcutaneous tissue.
Cheeks
Lined with mucous membrane
Oral cavity
Forms roof of oral cavity. Separates oral cavity from nasal cavity. What is this?
What is the anterior portion?
What is the posterior portion?
Palate
- Hard palate
- Soft palate
Consists of skeletal muscle and connective tissue. What is this?
This ends in a projection called what?
- Soft palate
- Uvula
During swallowing, what 2 things move upward and directs food away from nasal cavity and into oropharynx?
Soft palate and uvula
What is the tongue consisted of?
Skeletal muscle
Major attachment for tongue. Anchored to hyoid bone
Root
Connects tongue to floor of mouth.
Frenulum linguae
Tiny projections on dorsal surface of tongue. Provide friction for manipulating food in mouth. Contain the taste buds.
Papillae
Embedded in posterior surface of tongue. Provide defense against bacteria that enter mouth.
Lingual tonsils
Manipulate food in the mouth for mastication. What is this? Move food around to mix it with saliva, shape it into a ball-like mass known as what? and direct it toward the pharynx for swallowing.
Tongue muscles
- Bolus
Appear at approximately 6 months of age. Continue to develop until about 2 1/2 years of age. Contain 10 teeth in each ja, total of 20 teeth.
Primary (deciduous) teeth
6 years of age, primary teeth begin to fall out. Replaced by secondary teeth. Contain 16 teeth in each jaw. total of 32 teeth.
Secondary (permanent) teeth
Chisel-shaped and have sharp edges. Used for biting food.
Incisors
Cone-shaped and have points. Used for grasping and tearing food.
Cuspids (canines)
Flat surfaces with rounded projections. Used for crushing and grinding food
Bicuspids (premolars) and molars
Visible portion of the tooth covered by enamel.
Crown
Portion embedded in the sockets (alveolar processes) of the mandible and maxilla.
Root
Small region in which the crown and root meet. Adjacent to the gingival (or gum)
Neck
Central core of tooth
Pulp cavity
Consists of connective tissue, blood vessels, nerves
Pulp
Term used to describe pulp cavity located in root of the tooth.
Root canal
Opening in root of the tooth for nerves and blood vessels
Apical foramen
Surrounds pulp cavity and forms bulk of tooth
Dentin
Thin layer of calcified connective tissue. Surrounds dentin in root of the tooth. Attaches root to the periodontal ligaments.
Cementum
Firmly anchor root in the alveolar process
Periodontal ligaments
Surrounds dentin in crown of the tooth. Hardest substance in the body.
Enamel
Secrete saliva into oral cavity. Mixed with food during mastication.
Salivary glands
Largest of the salivary glands. Located in each side of head, just in front of the ear.
Parotid glands
Located in floor of mouth
Submandibular glands
Also located in floor of mouth, anterior to the submandibular glands and under the tongue.
Sublingual glands
What does saliva contain?
Water, mucus, and amylase (enzyme)
Act as cleansing action on the teeth. Moistens and lubricates food during mastication and swallowing. Dissolves certain molecules so that foods can be tasted. Begins chemical digestion of starches.
Saliva
