Chapter 1 Anatomy Flashcards
Initiates the breakdown of starch
Salivary amylase
Breaks down triglycerides into fatty acids
Lingual lipase
Cheeks are covered internally by what type of mucous membrane?
Non-keratinized stratified squamous epithelium
Lips contain what muscle?
Orbicularis oris
Wall or septum that separates the oral cavity from the nasal cavity, forming the roof of the mouth
Palate
Formed by the maxillae and palatine bones and is covered by keratinized mucous membrane
Hard palate (anterior)
Posterior portion of the roof of the mouth, arch-shaped muscular partition between the oropharynx and nasopharynx, lined with non-keratinized mucous membrane
Soft palate (posterior)
Accessory digestion organ composed of skeletal muscle covered with mucous membrane
Tongue
Side of the tongue:
Contains tastebuds and is covered with keratinized stratified squamous epithelium.
Dorsal
Side of tongue:
Lined with non-keratinized mucous membranes.
Lateral and ventral
Secrete both mucous and a watery serous fluid that contains the enzyme lingual lipase which acts on triglycerides
Lingual glands in the lamina propria of the tongue
Palatine tonsils are situated between which two arches?
Palatoglossal and the palatopharyngeal
At the posterior border of the soft palate, the mouth opens into the oropharynx through the:
Fauces
Keratinized epithelial tissue that covers the alveolar processes, and extends slightly into each socket
Gingiva (gums)
The gingiva forms a triangle of tissue called the interdental papilla, filling in the space _______ between each tooth
Embrasure
Freely moveable non-keratinized mucosa that connects the freely movable tissues of the cheeks and lips to the firm tissues of the gingiva
Mucogingival junction/fold
Visible region of the tooth above the level of the gums
Crown (coronal)
Region of the tooth which encompasses the junction of the crown and root near the gum line.
Contains the cementum enamel junction (CEJ) where the enamel and cementum meet.
Neck (Cervical)
Region of the tooth that is embedded in the socket.
Root (radicular)
Different root classifications:
1 - Single-rooted
2 - Bifurcated
3 - Trifurcated
> 3 - Multi-rooted
Tissue of the tooth that covers the crown.
Hardest tissue in the body.
95% calcium.
Enamel
Tissue that forms the majority of the tooth.
Gives the tooth basic shape and rigidity.
Harder than bone.
70% calcium.
Dentin
Connective tissue of the tooth located within the pulp cavity containing blood vessels, nerves, and lymphatic vessels
Pulp
Each root canal has an opening at its base, the _________ through which blood vessels, lymphatic vessels offer protection, and the nerves provide sensation
Apical Foramen
Tissue of the attachment apparatus which covers the dentin of the roots.
Bone-like substance, which attaches the root to the periodontal ligament.
Cementum
Tissue of the attachment apparatus which lines the tooth sockets and consists of dense fibrous connective tissue that anchors the teeth to the sock walls.
Innervated and provide proprioception.
Periodontal ligaments
Tissue of the attachment apparatus which is the thickened ridge of the bone that contains the tooth sockets (alveoli) on bones that hold teeth in the maxilla and mandible
Alveolar process
Closest to the midline, chisel-shaped and adapted for cutting into food.
One root.
Incisors
Pointed surface called a cusp.
They are used to tear and shred food.
They have one root.
Canines (cuspids)
Two cusps and one to two roots.
Used for crushing and grinding.
Premolars (biscuspids)
Four or five cusps and 2-3 roots.
Used for crushing and grinding.
Molars
Fused pair of facial bones that contains the upper teeth (maxillary arch), the hard palate, and the V2 branch of the trigeminal nerve.
Maxilla
Lower jawbone, is the largest and strongest facial bone.
Only moveable skull bone.
Mandible
Each ramus has a posterior condyle that articulates with the temporal bone to form the:
Temporal Mandibular Joint (TMJ)
Nerves:
Anterior Superior Alveolar (ASA)
Middle Superior Alveolar (MSA)
Posterior Superior Alveolar (PSA)
Infraorbital (IO)
Inferior Alveolar (IA)
Lingual
Mental
Salivary Glands:
Parotid
Submandibular
Sublingual
Major salivary glands located inferior and anterior to the ears between the skin and the masseter muscle.
Secretes saliva into the oral cavity via the Stenson’s duct at the second maxillary molar.
Parotid Glands
Major salivary glands found on the floor of the mouth.
Wharton’s ducts, enter laterally to the lingual frenulum.
Submandibular Glands
Major salivary glands found beneath the tongue and superior to the submandibular glands.
Lesser sublingual ducts, open into the floor of the mouth in the oral cavity proper.
Sublingual glands
99.5% water and 0.5% solutes
Saliva
Toward the tongue
Lingual
Toward the cheek
Buccal
Toward the face
Facial
Toward the lips
Labial
Toward the palate
Palatal
In between
Interproximal
Biting surface of molars and premolars
Occlusal
Biting surface of laterals and canines
Incisal
Substance that induces insensitivity to pain. Measured as a percentage.
Anesthetic
Substance that induces the narrowing of the muscular walls of the blood measures
Vasoconstrictor
1:100,000 Epi
8 cartridges for Healthy patients
2 cartridges for Cardiac patients
Half life of 1.6h
2% Lidocaine/Xylocaine
1:200,000 of Epi
10 cartridges for healthy patients
4 cartridges for cardiac patients
Half-life of 3.5h
0.5% Bupivacaine/Marcaine
Signs and Symptoms of anesthetic overdose
Slurred speech and/or disorientation
Shivering
Twitching, facial muscle tremors
Lightheadedness/Dizziness
Visual and/or auditory disturbances
Drowsiness
HTN (mild), hypotension (SEVERE)
Warm/flushed skin
Pleasant dreamlike state
Equipment used for anesthetizing
10mL syringe OR dental aspirating syringe
Anesthetic vial OR 1.8mL cartridge
1 or 1.5 inch, 25-30 gauze needle
Topical anesthetic with cotton tip applicator (optional)
Deposition of local anesthetic directly at or near small terminal nerve endings in the immediate area of treatment
Local Infiltration
Deposition of local anesthetic near a major nerve trunk at a greater distance from the area of treatment, provides wider areas of anesthesia
Regional block
- Alveolar(s) (ASA, MSA, PSA, IA)
- Mental incisal
For anesthesia of entire hemi-mandible
For fracture repair, removal of teeth, or pain control
Inferior Alveolar (IA) Block
Target site of an Inferior Alveolar Block
Lingula, small bony bump about halfway back on the inner ramus of the mandible
Depth of injection of an IA block
2-3 cm
about 1/2 or 3/4 of a long 1.5 inch needle
IA Block:
Amount deposited
1.5 mL over 60 seconds.
Withdraw half of needle and deposit the remainder.