Oral Cavity Anatomy Quiz

Oral Cavity Structures

• The oral cavity is the first part of the digestive system
• It contains structures necessary for mastication, taste, and speech
• The oral cavity includes teeth, tongue, and salivary glands

Lips

• Two lips—upper and lower lip
• The corner where the two lips meet is called the commissure
• Two grooves around the lips: nasolabial and labiomental grooves

Palate

• The anterior part is the hard palate
• The posterior part is the soft palate
• The soft palate ends in a structure called the uvula

Gingiva

• Gingiva is the tissue surrounding the cervical part of teeth

Cheeks

• The cheek includes the linea alba buccalis

Tongue

• The tongue is a broad, flat, muscular organ with glands
• It rests on the floor of the mouth

Floor of the Mouth

• The floor of the mouth is shiny and has blood vessels
• Two bilateral bulges are present due to the salivary glands

Dental Arches

• Teeth are arranged in two arches: upper (maxillary) and lower (mandibular)
• The maxillary arch contains maxillary teeth and the mandibular arch mandibular teeth.

Dentitions

• Teeth cannot increase in size after formation
• There are two dentitions:
  • Primary (deciduous) dentition
  • Permanent (secondary) dentition

Dentition Periods

• Deciduous dentition period: 6 months to 6 years
• Mixed dentition period: 6 years to 12 years
• Permanent dentition begins around 12 years

Tooth Anatomy

• Macro-anatomy:
  • Crown: The part normally covered by enamel
  • Cervical line (cemento-enamel junction (CEJ))
  • Root(s)
• Micro-anatomy:
  • 3 calcified tissues
  • One soft specialized connective tissue

Pulp and Pulp Cavity

• Coronal pulp
• Radicular pulp
• Pulp horn
• Pulp chamber
• Root canal
• Apical foramen

Periodontium

• The periodontium includes the supporting tissues of teeth
• It includes two soft tissues and two hard tissues
  • Gingiva (pink tissue surrounding the tooth's cervical portion)
  • Periodontal Ligament (fibrous ligament attaching the tooth to the bone)
  • Cementum (covers the root of the tooth)
  • Alveolar Bone (portion of the bone that surrounds the roots of the teeth)

Line & Point Angles

• Line angle: Junction of 2 adjacent surfaces; name derived from both surfaces
• Point angle: Junction of 3 adjacent surfaces; name derived from all 3 surfaces

Tooth Eruption

• Eruption is the process where a tooth moves from the jaw into the oral cavity.
  • Passive: Apical recession of gingival tissue allows for tooth to display more of its structure.
  • Other types of eruption (if present in the text)

Anatomical & Clinical Crown

• Anatomical crown: Enamel-covered portion of the tooth
• Clinical crown: Visible portion of the tooth within the oral cavity

Problem-Based Questions

• Examples of problem-based questions (if present in the text)

Test your knowledge about the anatomical structures of the oral cavity. This quiz covers essential components such as the lips, palate, tongue, gingiva, and dental arches. Perfect for students in anatomy or dental courses.