Upper GI Tract

Question 1

Joint of movement in jaw

Answer 1

Temporomandibular Joint

Question 2

3 muscles to close mouth

Answer 2

Temporalis, Masseter, Medial Pterygoid

Question 3

Muscle to open mouth

Answer 3

Lateral Pterygoid

Question 4

Circular muscle around mouth- prevents dribbling

Answer 4

Orbicularis Oris

Question 5

Oral Cavity has mucosa with what kind of wall?

Answer 5

Striated Squamous Epithelium

Question 6

What type of muscle makes up the tongue?

Answer 6

Skeletal muscle

Question 7

Papilla on tongue for taste

Answer 7

Foliate, vallate and fungiform

Question 8

Papillae on tongue for touch, temperature etc.

Answer 8

Filiform

Question 9

Muscle of the cheek

Answer 9

Buccinator- aids manipulation of food to position it between the teeth

Question 10

How many of each type of teeth?

Answer 10

32 in total; 4 incisors, 2 canine, 4 premolars and 6 molars on top and bottom

Question 11

Teeth writing in notes:

Answer 11

upper left 6= |_6

Question 12

Saliva contains

Answer 12

water (99%) and mucin (lubricant to aid swallowing and speech) and amylase (for beginning digestion)

Question 13

Saliva acts

Answer 13

as a buffer for plaque acids

Question 14

3 major salivary glands

Answer 14

Parotid (near ear, by upper 2nd molar), submandibular (under mandible) and sublingual (under tongue)

Question 15

Pharynx and oesophagus lining mucosa cells?

Answer 15

non-keratinised stratified squamous epithelium

Question 16

3 parts of pharynx?

Answer 16

Nasopharynx, Oropharynx, Laryngopharynx

Question 17

Muscles of pharynx

Answer 17

3 outer circular constrictor muscles, 3 vertical muscles

Question 18

Anterior 2/3rds of tongue nerve supply?

Answer 18

Taste- CN VII

General Sensort- CN V3

Question 19

Posterior 1/3rd of tongue nerve supply?

Answer 19

Taste and general sensation- CN IX

Question 20

Temporalis attachments…

Answer 20

coronoid process of mandible to temporal fossa

Question 21

Masseter attachments…

Answer 21

angle of mandible to zygomatic arch

Question 22

Which nerve serves the muscles of mastication?

Answer 22

Trigeminal (CN III)- only motor division (V3), the other 2 are sensory divisions

Question 23

Medial Pterygoid attachments….

Answer 23

angle of mandible to pterygoid plates of sphenoid bone

Question 24

Lateral Pterygoid attachments…

Answer 24

condyle of mandible to pterygoid plates of sphenoid bone (this muscle pulls the mandible posteriorly when mouth is wide open)

Question 25

Which nerve supplies superior half of oral cavity with sensation?

Answer 25

CN V2 (trigeminal nerve)

Question 26

Which nerve supplies inferior half of oral cavity with sensation?

Answer 26

CN V3 (trigeminal nerve)

Question 27

Nerves involved in the gag reflex?

Answer 27

CN IX (sensory part) and CN IX + X (motor part)

Question 28

Which cranial nerve supplies the parotid salivary gland?

Answer 28

CN IX

Question 29

Which cranial nerve supplies the submandibular salivary gland?

Answer 29

CN VII

Question 30

Which cranial nerve supplies the sublingual salivary gland?

Answer 30

CN VII

Question 31

Name the extrinsic muscles of the tongue?

Answer 31

palatoglossus, styloglossus, genioglossus, hypoglossus

Question 32

Oesophagus begins at which level?

Answer 32

C6

Question 33

Name parts of the stomach, from top to bottom?

Answer 33

Fundus, cardia, body, rugae (folds), pyloric antrum, pyloric sphincter