Oral cavity

Question 1

What does oral cavity consist of

Answer 1

lips, tongue, teeth, salivary glands

Question 2

types of mucosa found in oral cavity

Answer 2

LINING: *strat squamous nonkeratinized epithelium
* internal aspect cheek and lip, floor of mouth, inferior
surface of tongue.
*Lining mucosa overlies thick submucosa containing n
salivary glands

MASTICORY:* Parakeratinized epithelium
* Found areas prone to friction, hard palate+gums
* lamina propria in these regions rests directly on
the underlying bone

SPEACIALIZED:* dorsal aspect of tongue, features papillae

Question 3

How do lips and cheek share similar structure

Answer 3

external=skin internal=skeletal muscles

submucosal +mucosal layer

superficial transition zone=red margin/ vermillion

Question 4

What 3 parts are the lip subdivided into

Answer 4

Cutaneous (outer)
intermediate
Mucosal (inner)

Question 5

What consists the cutaneous part of the lip

Answer 5

• Stratified squamous keratinized epithelium
• sweat and sebaceous glands
• hair follicles

Question 6

What consists of the intermediate part of lip

Answer 6

• Stratified squamous keratinized epithelium
• Stratum corneum becomes thinner
• Vermillion zone: red due to papillae with dense capillary plexus near surface + Meissner nerve endings

Question 7

What consists the mucosal part of lip

Answer 7

• Stratified squamous nonkeratinized (parakeritinized)
  *many minor labial salivary glands

Question 8

What is the main muscle on the floor of the cavity

Answer 8

mylohyoid muscle