Oral Cavity

Question 1

Mouth

Answer 1

Lips (anteriorly) to oropharyngeal isthmus (posteriorly)
Vestibule
Oral Cavity Proper

Question 2

Oral Cavity Proper - Vestibule

Answer 2

Btw the lips and cheeks externally and the teeth and gums internally
Labial Frenula
Cheeks - Buccinator covered with buccopharyngeal fascia

Question 3

Boundaries of Oral Cavity Proper

Answer 3

Roof = Palate
Floor = Mucous membrane lying over sublingual glands and the mylohyoid
Tongue fills it when mouth is closed

Question 4

Nerve Supply

Answer 4

Sensory - Maxillary and Mandibular divisions of V

Question 5

Teeth

Answer 5

Deciduous and permanent

Question 6

Tongue

Answer 6

Divided into anterior 2/3 (within oral cavity proper) and posterior 1/3 (within oropharynx)

Question 7

Musculature innervation of tongue

Answer 7

Innervated by CN XII (hypo)
Intrinsic
Extrinsic
- Genioglossus, hyoglossus, styloglossus and palatoglossus (CN X)

Question 8

Mucous membrane of tongue

Answer 8

Sulcus terminalis and foramen cecum

Papillae (filiform, fungiform, circumvallate, foliate)

Question 9

Sensory innervation of tongue

Answer 9

1. General sensation
 anter 2/3 - Ligual nerve (V3)
 post 1/3 - glosso (CN IX)
2. Special sensation 
anter 2/3 - chroda tympani (CN VII)
post 1/3 - glosso (CN IX)

Question 10

Arterial Supply of tongue

Answer 10

lingual artery from external carotid artery

Question 11

Salivary Glands innervation

Answer 11

Parasympathetic innervation by facial nerve (CN VII)

Question 12

Salivary Glands

Answer 12

Submandibular Gland

Sublingual Gland

Question 13

Submandibular Gland

Answer 13

Duct opens on either side of lingual frenulum as the Sublingual papilla, named for its location on tongue at floor of mouth

Question 14

Sublingual Gland

Answer 14

Lies in floor of the mouth

Opens into floor of mouth as many ducts