The Oral Cavity (Oral vestibule, Oral Cavity proper, Paraoral structure, Lips, and Tongue)

Oral Cavity

Where the teeth are located

Oral Vestibule and Oral Cavity Proper

Two divisions of the Oral Cavity

Sagittal, Coronal, and Transverse

What are the three anatomical plates that divide the body into sections parts

Sagittal plate

A vertical line that divides the body into sides of left and right

Coronal plate

A vertical line that divides the body into front(anterior) and back(posterior)

Transverse plate

A horizontal line that divides the body into upper(superior) and lower(inferor)

Left and Right

The Sagittal Line divides the body into what sections

Front(Anterior) and Back(Posterior)

The Coronal Line divides the body into what sections

Upper(Superior) and Lower(Inferior)

The Transverse Line divides the body into what sections

Oral Verstibule

The slit-like, horseshoe-shaped space in the mouth bounded externally by the lips and cheeks, and internally by the teeth and gums

Oral Vestibule

Small antechamber or space bounded by the cheecks and inner portion of the lips laterally and the alveolar process and teeth medially

Front

When hearing the term ‘Facial’, this can be associated to what orientation?

Inside

When hearing the term ‘Oral’, this can be associated to what orientation?

Oral mucosa

Is the covering of the lips/cheecks

Facial and Oral Sides

What are the two major parts of the Oral Vestibule?

Mucosa of the lips and cheeks

The Facial Side of the Oral Vestibule has what two parts?

Oral side

The alveolar mucosa, gingiva, and the facial surfaces of the teeth are seen on what part of the oral vestibule?

Sulcus

A depression that is linear in form

Superiorly

What part of the oral cavity is the mucosa of the hard and soft palate seen?

Anterior and Lateral

What part of the oral cavity is the gingiva and teeth seen?

Inferiorly

What part of the oral cavity is the mucosa of the tongue and floor of the mouth seen?

Posterior and Laterally

What part of the oral cavity are the anterior pillars of the fauces and tonsils seen?

Oral Mucosa

Mucous membrane that lines the oral cavity which differs in thickness depending on the location

Mastication

Breaking down of food for ingestion

Mastication, Speech, and Respiration

What are the three functions of the oral cavity

Mucogingival junction

Where the gingiva and alveolar mucosa meet

Thinker and darker

When compared with the alveolar mucosa, the gingiva visually looks? (Thickness and tone)

Parotid Papilla

An opening near the molars where saliva from the Parotid gland enters the oral cavity

Mucobuccal fold

Junction between the cheeks and alveolar mucosa which serves as a landmark for administering local anesthesia

Glossal

Another term for tongue (G)

Labial Frenum

Fold of tissue above and between the central incisors

Edentulous

Term referring to a patient with no remaining dentition

Hard Palate is supported by bone

Difference between the Hard and the Soft palate regarding structure?

Soft Palate

Part of the palate that moves when you talk

Palatoglossal arch

Fold of tissue known as the anterior pillar of the fauces, seen in front.

Palatopharyngeal arch

Is a fold of tissue known as the posterior pillar, seen in the back.

Palatine tonsils

Between the Palatoglossal and Palatophalyngeal archs, you can find what>

Maxillary tuberosity

Where the molar teeth ends, posteriorly

Palatene rugae

Folds of the hard palate

Incisive Papilla

Seen behind the central incisors, important landmark for administering anesthesia and determining midline.

Vibrating Line

A non visible line where movement of the soft palate is needed to determine where it is.

Retromolar pad

Is pear shaped and can be seen at the back of the last molar of the mandibular arch,

Dorsal Surface

The top part of the tongue

Ventral Surface

The bottom part of the tongue

Fimbriated Fold

Rough folds lateral to the lingual vein on either side of the frenum of the tongue

Lingual Frenum

Attaches the tongue to the floor of the mouth.

Sublingual Papilla

Main opening of the Sublingual ducts

Buccal/Oral, Pharyngeal, and Esophageal phases

What are the three steps/stages in Deglutition?

Swallowing

What is the more common term for deglutition

Buccal/Oral Phase

Phase of deglutition that occurs voluntarily in the oral cavity, when the tongue forces the bolus of food back in the oropharyx. The teeth then moves together to swallow to form a seal.

Pharyngeal phase

Stage of deglutition that occurs involuntarily when the food enters the oropharynx towards the esophagus

Esophageal phase

Stage of deglutition that occurs involuntarily when the esophageal sphincter opens to allow food in

Amalase enzyme

a vital digestive enzyme that aids in digestion. Produced mainly by the salivary glands and pancreas that breaks down complex starches into simple sugars.

Oral Cavity

Where does digestion start?

Mastication and lubrication

The physical digestion of food involves what two actions that are initiated in the oral cavity?

Fungiform, Foliate, Filiform, and Circumvallate

What are the four types of lingual papillae

Sweet and Salty

The Fungiform papillar is responsible for tasting what quality?

Sour

The Foliate papillae is responsible for tasting what quality?

Bitter

The circumvallate papillae is responsible for tasting what quality?

Filiform papillae

The type of lingual papillae that does not contain any taste buds

Dorsal surface

What surface of the tongue contains the lingual papillae

Labial, Dental, Palatal, and Guttural

What are the four divisions of consonants

p,b,m

What are the labial consonants

f,v,th

What are the dental consonants

r,j

What are the Palatal consonants?

k,g

What are the Guttural consonants?

Labial Consonants

What are the first consonants that babies are able to articulate?

Vowels

When the vocal chords are OPEN, what sounds are produced?

Consonants

When the vocal chords are CLOSED, what sounds are produced?

Labial

When patients lack dentition, what consonants do they find most easy to articulate?

Tonsillar ring of Waldeyer

Includes the phagocytic activity of macrophages against harmful bacteria and foreign bodies

Adenoid, Palatine, Lingual, and Tubal

What are the four types of tonsils that make up the Tonsillar Ring of Waldeyer.

Dry lips

In case of nasal obstruction or congestion, a patient will often present with what symptom?

Mastication

Grinding of food by the teeth with the aid of the lips, cheeks, tongue, and palate.

Lips

Composed of striated muscles (orbicularis oris) and fiberelastic c.t.

Labial tubercle

Part of the Upper lips. The small rounded nodule of tissue in the center of the lowest part of the upper lip

Nasolabial groove

Part of the Upper lips. Facial creases running from the sides of the nose to the corners of the mouth.

Labial commissure

Part of the Upper lips. The corner of the mouth where the upper and lower lips meet

Vermillion

Part of the Upper lips. The red part of the lips

Vermillion border

Part of the Upper lips. The rim of PALER skin hat demarcates the vermillion from the surrounding skin

Cupid’s bow

Part of the Upper lips. The double curve of the upper lip that forms an M-shaped outline of the upper border of the upper lip

Wet Line

The juction between the keratinized and non keratinized portion of the lips

Wet line

Border between the wet and dry parts of the inner lips when pulled

Mentolabial sulcus

The horizonal groove under the lower lip that separates the lips from the chin

Parotid Papilla

Roun elevation of tissue between the 1st and 2nd molar

Linea alba buccalis

White line running posteriorly on each side at the level where the upper and lower teeth come together

Repeated cheeck biting

What causes linea alba buccalis

Buccal pad or fat

Separates the buccinator muscles from the ramus of the mandible and the masseter muscle.

Fordyce sports

Yellow sports seen on the buccal mucosa just posterior to the corner of the mouth

Tongue

Broad far organ composed of muscle fibers and fat

Sulcus terminalis

Part of the Dorsal surface of the tongue. Shallow grove separating the anterior 2/3 from the posterior 1/3 of the tongue

Foramen cecum

A small, blind-ending pit located on the top surface at the back of the tongue.

Filiform papillae

Hair like structure that covers 2/3 of the tongue. Used for sensation as it does not contain taste buds

Fungiform papillae

Near the tip of the tongue, consisting of a sweet (at the tips) and salty sensing taste buds.

Foliate Papillae

Lateral border of the tongue consisting of taste buds that perceive sour and acidic tastes

Lingual Frenum, Sublingual papilla/caruncle, Sublingual folds

Parts of the Ventral surface of the tongue