Mouth and tongue Flashcards by Paige Johnson

What is the thin epidermis that covers the lips?

Transitional zone

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The border between the lips and the orbicularis oris muscle

Vermilion border

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Another name for the cleft of the lip

Philtrum

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Extension of the inner alveolar mucosa at midline from base of each lip to adjacent gum

Frenulum

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What is between the buccinator and the superficial skin?

Buccal fat pad

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Space between the teeth and gums internally/lips and cheeks externally

Oral vestibule

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Space internal to the teeth, and mandibular/maxillary alveoli

Oral cavity proper

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Muscular floor of the mouth is formed by what?

Mylohyoid and geniohyoid

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Muscle that runs from the mental spines to the hyoid

Geniohyoid

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Mandibular attachment point for the mylohyoid

Mylohyoid line

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Fold of mucosa extending from the midline of the floor of the mouth, across inferior surface of the tongue towards the tip of the tongue

Frenulum of the tongue

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Gland just deep to the mucosa of the floor of the mouth, forming a ridge

Sublingual gland (forms sublingual ridge)

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Location of superficial part of the submandibular gland

Deep to platysma in submandibular triangle (more inferior than deep part)

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Location of deep part of the submandibular gland

Superior to the mylohyoid (closer to submandibular gland)

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Exit point for the saliva of the submandibular gland

Sublingual caruncle

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4 types of teeth

incisor, canine, premolar, molar

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3 free surfaces of a tooth

Superficial, deep, occlusive

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3 parts of a tooth

Crown, neck, root

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What is a tooth primarily composed of?

Dentin

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Covers the dentin of the crown

Enamel

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Covers the dentin of the root

Cement

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Where does enamel transition into cement?

Neck of the tooth

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Interior of the tooth

pulp cavity

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Contents of the pulp cavity

Connective tissue, blood vessels, nerves

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Entrance/exit of the blood vessels/nerves in the pulp cavity

Apical foramen

Fibrous connective tissue that connects the neck of the tooth to the alveolus of the bone

Gingivae

Connects the cement and the periosteum of surrounding bone

Periodontal ligament

How many teeth do 2-3 y/o typically have?

How many teeth do adults typically have?

Divisions of the tongue

Root, body, apex

V-shaped groove at the boundary between the root and the body of the tongue

Terminal sulcus

Small pit at the midline of the terminal sulcus

Foramen cecum. (remnant of embryonic thyroglossal duct)

Midline of the dorsum of the tongue

Median sulcus

Divides the tongue into left and right halves

Median septum

Tongue receptors sensitive to touch

Filiform receptors

Shallow fossae on the superior aspect of the epiglottis

Epiglottic valleculae

General group of tongue mucsles that attach to bone

Extrinsic muscles

Large, fan-shaped muscle used for protusion of the tongue

Genioglossus

Arises from the body/greater wing of hyoid, depresses/retracts the tongue

Hyoglossus

Arises from the styloid process, participates in retraction/elevation of the tongue

Styloglossus

Arises from the palate, pulls the soft palate inferiorly

Palatoglossus

Muscles of the tongue that do NOT connect to bone

Intrinsic muscles

Muscles that control the tip of the tongue/help to retract the protruded tongue

Superior/inferior longitudinal muscles

Tongue muscles that arise from the septum and extend to the lateral edge of the tongue

Transverse group of muscles

Path of inferior alveolar artery

Branches off of maxillary artery, thru inferior alveolar canal, supplies lower teeth/gums/mandible

Superior alveolar artery path

From maxillary artery in infratemporal fossa, supplises posterior maxilla/teeth/gums

Supplies blood to anterior maxilla/teeth/gums

Infraorbital artery

Venous drainage of mouth

Into the pterygoid plexus then internal jugular vein

Path of lingual artery

Branches off of ECA, deep to hyoglossus, branches into dorsal/deep/sublingual/palatine tonsil

2 arteries that supply the sublingual gland/floor of the mouth

Facial and lingual

General sensation for upper alveoli/teeth

Maxillary nerve via superior alveolar nerves

Sensation for palatal gingivae

Preater palatine/nasopalatine

Sensation for mandible/cheek/lower alveoli/gibgivae/teeth/floor of mouth

Mandibular nerve

Sensation for ramus/body of mandible and lower alveoli teeth/gums

Inferior alveolar nerve

Sensation of the floor of the mouth/anterior tongue to the terminal sulcus

lingual nerve

Only tongue muscle innervated by vagur nerve

Palatoglossus

Innervates all intrinstic/extrinsic muscles of the tongue (except one)

Hypoglossal nerve

Sensation posterior to terminal sulcus

Glossopharyngeal nerve

Taste for anterior tongue

Chorda tympani via facial nerve

Taste for posterior terminal sulcus tongue

Glossopharyngeal nerve

Sensation near vallecula

vagus