GI: Taste, Chew and Swallow

Question 1

What muscles close the mouth?

Answer 1

Masseter
Temporalis
Medial pterygoid

Question 2

Which muscle opens the mouth

Answer 2

lateral pterygoid

Question 3

where does the masseter attach

Answer 3

Angle of the mandible

Zygomatic arch

Question 4

Where does the temporalis attach

Answer 4

coronoid process of the mandible

lateral aspect of the neurocranium

Question 5

where does the medial pterygoid attach

Answer 5

medial side of the angle of the mandible

pterygoid plate of the sphenoid bone

Question 6

where does the lateral pterygoid attach

Answer 6

condyle of mandible

pterygoid plate of sphenoid

Question 7

What cranial nerve supplies the muscle of mastication

Answer 7

CN V3

Question 8

Which foramen does the CN V3 leave from

Answer 8

foramen ovale

Question 9

What supplies the posterior thrd of the tongue with special sensory nerves?

Answer 9

CN IX

Question 10

What supplies the special sensation of tast to the anterior part of the tonguw

Answer 10

CN VII

Question 11

What supplies general sensation to the inferior part of the oral cavity including the tongue

Answer 11

CNV3

Question 12

What supplies the superior part of the oral cavity?

Answer 12

CN V2

Question 13

Where does CNV2 pass through the cranium

Answer 13

Foramen rotundum

Question 14

Where are the two exit points of the facial nerve

Answer 14

Internal acoustic meatus

Stylomastoid foramen

Question 15

What branch of CN VII supplies the tongue

Answer 15

chorda tympani

Question 16

Where else does the charda tympani supply

Answer 16

secretomotor to the submandibular and sublingual salivary glands

Question 17

What are the four extrinsic muscles of the tongue

Answer 17

Palatoglossus
Hyoglossus (hyoid bone)
Styloglossus (styloid process of the temporal bone)
Genioglossus

Question 18

What supplies the muscles of the tongue?

Answer 18

CN XII

Question 19

Where does CN XII leave the brain

Answer 19

hypoglossal canal

Question 20

What is the sensory part of the gag reflex

Answer 20

CN IX

Question 21

Whaat is the motor part of the gag reflex?

Answer 21

CN X

Question 22

Where does cranial nerve IX exit the cranial cavity

Answer 22

jugular foramen

Question 23

What muscle prevents drooling

Answer 23

Orbicularis oris

Question 24

What innervates the orbicularis oris

Answer 24

CN VII

Question 25

Where does the parotid gland drain?

Answer 25

Upper second molar

Question 26

Where does the submandibular duct drain?

Answer 26

Base of the lingual frenulum

Question 27

Where does the sublingual duct drain

Answer 27

floor of the mouth

Question 28

What are the two layers of pharyngeal constrictor muscles

Answer 28

Inner longitudinal

Outer circular

Question 29

What supplies the inner longitudinal

Answer 29

Cranial nerves IX and X

Question 30

What supplies the outer circular

Answer 30

CN X

Question 31

What is the skeletal muscle at the upper oesophageal sphincter

Answer 31

Cricopharyngeus

level C6

Question 32

Which sphincter is anatomical and which is physiologcial

Answer 32

Upper = anatomical

Lower- physiological

Question 33

What is the innervation of the oesophagus

Answer 33

the oesophageal plexus

Question 34

What are the three constictions of the oesophagus?

Answer 34

Cervical -UOS
Thoracis- arch of aorta and left main broncus
Diaphragmatic- LOS

Question 35

What is the z line

Answer 35

marks the abrupt change in mucosa from oesophageal to gastric

Question 36

What is the junctionbetween the body and the pyloric antrum called?

Answer 36

Incisura angularis