Oral Cavity

Question 1

Posterior boundary of oral cavity

Answer 1

Oropharyngeal isthmus

Question 2

Origun of pgaryngeal part of tongue

Answer 2

3rd branchial arch

Question 3

Structures of Ventral of the tongue

Answer 3

Lingual frenum
1. Deep Lingual Vein, deep lingual

artery and lingual nerve

2. Fimbriated fold.

Frenulum

3. Sublingual fold and the openings of

the sublingual ducts.

Sublingual fold

4. Opening of the submandibular duct.

Question 4

Insertion of tongue ms

Answer 4

-genioglossus into the whole tongue

The Rest ‘re into the lateral of tongue

Question 5

Origin of palatoglossus

Answer 5

Palatine aponeurosis

Question 6

Function of intrinsic tongue ms

Answer 6

Longitudinal (sup - inf )–shorten the tongue

Transverse—elongation
Vertical— flattening
Oblique — curling

Question 7

Deep and superficial relations of hyoglossus

Answer 7

Deep

• 2nd part of lingual A
• stylohyoid lig
• stylopharyngeus ms
• glossopharyngeal N
• genioglossus ms

Sup

• lingual N and sub m ganglion
• hypoglossal N
• deep part of sub m g
• duct
• supra hyoid of lingual
• styloglossus

Question 8

N supply of tongue

Answer 8

Don’t forget

• most post part supplied by vagus through internal laryngeal branch
• n supply to palatoglossus by vagus through pharyngeal plexus

Question 9

Lymphatic drainage of tongue

Answer 9

Tip
By sub mental
Ant 2/3
Central -- to both sub m gland
Peripheral -- to the same side 
Post third 
Upper deep c Ln

Question 10

Branches of lingual A

Answer 10

- deep lingual 
To ant 2 thirds
- 2 dorsal lingual 
Post third of tongue
Tonsil
Soft palate 
- sublingual A 
To sub L g 
- supra hyoid from 1st part

Question 11

Had palate formed of

Answer 11

Horizontal plate of palatine

And palatine process of maxillary

Question 12

Blood supply to soft palate

Answer 12

1. Lesser palatine artery: maxillary artery.
2. Ascending palatine artery: facial artery.
3. Sphenopalatine artery: maxillary artery
4. Palatine branch: ascending pharyngeal a

My Additional info

4. Dorsal lingual of the 2nd part of lingual

Question 13

Motor supply to palate

Answer 13

All the muscles of the soft palate are supplied by the vagus nerve except the tensor palati, which is supplied by the mandibular nerve via nerve to the medial pterygoid.

Sensory
G palatine
L palatine
Nasopalatine

Secretomotor to the palatine gland from greater petrosal

Question 14

Lymph Drainage of the Palate

Answer 14

: the palate drains into the deep cervical nodes.