Lecture 25: Upper GI

Question 1

what are the 2 divisions of digestvie system?

Answer 1

Alimentary canal (GI tract) and accessory organs

Question 2

what are the main sections of ailmentary canal

Answer 2

start:oral cavity
end:anus

-oral cavity
-pharynx
-esophagus
-stomach
-small int
-large int

Question 3

what are the digestive accessory organs

Answer 3

teeth, tongue, salivary glands, liver, gall
bladder and pancreas.

Question 4

boundaries of oral cavity:

Answer 4

anterior=lips
posterior=oropharyngeal isthmus
superiorly=palate
inferior=tongue/muscular diaphragm
laterally=cheeks

Question 5

two parts of oral cavity

Answer 5

vestibule (space btw lips and dental arches) and oral cavity proper

Question 6

what muscle forms corelips

Answer 6

orbicularis oris

Question 7

how do lips connect to gum

Answer 7

frenulum. mucosal fold

Question 8

where is uvula

Answer 8

soft palate

Question 9

label. which tonsil is found here

Answer 9

1. palatoglossal arch
2. palatopharyngeal arch

palatine tonsil is located in tonsilar fossa btw these arches

Question 10

three parts of teeth

Answer 10

1. crown: visible
2. root: within alveolar process of mandible/maxilla. attached to bony socket via peridontal ligament
3. neck: contains crown/root

Question 11

how are teeth classified

Answer 11

based on shape of crown.n. There are two
incisors, one canine, two premolars, and three molars in each half of the
upper and lower jaws

Question 12

what is core of tooth made of

Answer 12

dentine covered by enamel in the crown, and cement in the root

Question 13

pulp cavity

Answer 13

contains tooth nerves, blood vessels, lymphatic vessels. in the dentine

Question 14

root canal

Answer 14

extntion pulp cavity into roots

Question 15

what supplies the teeth of
the upper jaw, adjacent gingiva, and palates.

Answer 15

CN V (trigeminal), maxillary division

Question 16

Answer 16

1.crown
2.neck
3.root
4.enamel
5.dentine
6. gingiva

Question 17

fxn tongue

Answer 17

swallowing, phonation,
tasting and chewing

Question 18

what is pharyngeal part of tongue

Answer 18

posterior 1 third

Question 19

what is oral part of tongue

Answer 19

anterior 2/3 aka body

Question 20

what separates anterior and posterior tongue

Answer 20

terminal sulcus

Question 21

which nerves supply anterior tongue

Answer 21

special sense taste: facial nerve CN VII

general sensation: trigeminal (CNV) mandibular division

Question 22

which nerve supplis posterior tongue

Answer 22

CN IX (glossopharyngeal) both special and general

Question 23

what is found on superior surface of anterior tongue

Answer 23

lingual papillae that are named based on their
shape and include filiform papillae (thread like), fungiform papillae
(mushroom like), folliate papillae (leaf like), and vallate papillae.

Question 24

what forms the psoterior third of tongue

Answer 24

lymphoid tissue, organizd into lingual tonsils

Question 25

lingual frenulum

Answer 25

midline mucosal fold attaches inferior surface of tongue to floor oral cavity

Question 26

what supplies blood totongue

Answer 26

lingual branch of the external carotid artery

Question 27

nerve supply teeth

Answer 27

CNV (V2 supplies upper teeth, V3 supplies loewr)

Question 28

where does esophagus start?

Answer 28

CVI (end point pharynx)

Question 29

where does esophagus end

Answer 29

TXI, stomach

Question 30

what mediastinum is esophagus in

Answer 30

superior and psoterioe