anatomy

Question 1

What are the 2 differetn plexus’ within the Enteric nervous system

Answer 1

myenteric plexus (Auerbach)
submucosal plexus (Meissners)

Question 2

what does the myenteric plexus control

Answer 2

motiliy and sphincters

Question 3

what does the submucosal plexus control

Answer 3

epithelia and blood flow

Question 4

which of the two plexi is more proximal to the lumen

Answer 4

submucosla (meissners)

Question 5

parasymo control of GI tract?

Answer 5

VAgus up until distal end of trasnverse colon
S2,3,4 to descending colon and rectum

Question 6

name of pacemaker cells in GI system

Answer 6

interstitial cells of cajal

Question 7

what are the fat soluble vitamins

Answer 7

ADEK

Question 8

how is nitrogenous was excreted

Answer 8

in urea

Question 9

where is urea formed

Answer 9

liver

Question 10

what is respiratory epithelium histologially?

Answer 10

pseudostraified columnar epithelium

Question 11

layers of digestive tract (int to ext)

Answer 11

1. mucosa
2. submucosa
3. muscularis externa
4. serosa or adventita

Question 12

where are brunners glands found and what do they do

Answer 12

found in duodenum - secrete alkaline fluid containing mucin to diffus stomach acid

Question 13

name of lympoid tissue found in ileum

Answer 13

peyers patches

Question 14

what cells produce mucin

Answer 14

goblet cells

Question 15

what cells in the intestine and absorptive cells

Answer 15

enterocytes

Question 16

what are the layers of muscle on outside of large intestien called

Answer 16

teniae coli

Question 17

what muscles are responsible for jaw closing

Answer 17

1. temporalis
2. masseter
3. med pterygoid

Question 18

what muscle is reponsible for opening the jaw

Answer 18

lat pterygoid

Question 19

what nerve supplies muscles of the jaw

Answer 19

CN v3 - mandibular division

Question 20

what is sensory supply to top and bottom of mouth respectively

Answer 20

top- CN V2
bottom - CN V3

Question 21

what is sensory supply to tongue

Answer 21

CN V3

Question 22

what nerve is responsible for tongue taste

Answer 22

CN VII

Question 23

what nerve does the chorda tympani orginate from

Answer 23

CNVII

Question 24

what does the chorda tympani connect to

Answer 24

lingual nerve (branch of CNV3)

Question 25

what does chorda tympani contain

Answer 25

taste axons (anterior tongue)
parasymp axons (salivary glands)

Question 26

what nerves supply each salivary gland

Answer 26

parotid - CNIX
submandibular - CN VII (via chorda t)
sublingual - CNVII (via chorda t)

Question 27

retroperitoneal organs

Answer 27

2nd and 3rd part duodenum, ascending and descending colon, rectum, kidney ureter, pancreas, aorta

Question 28

where does the lesser omentum attach to

Answer 28

lesser curvature of the stomach

Question 29

what marks start and end of midgut

Answer 29

distal duodenum to prox 2/3rds of transverse colon

Question 30

what level of spine to sympathetic nerve to abdominal organs travel form

Answer 30

T5 to L2

Question 31

level of coeliac trunk

Answer 31

T12

Question 32

what doe sthe coeliac trunk split into

Answer 32

trifurcates
1. splenic artery
2. hepatic artery
3. left gastric artery

Question 33

blood supply of colon

Answer 33

sup and inf mesenteric art vis the marginal artery of drummond

Question 34

what line seperates the rectum

Answer 34

pectinate/dentate line

Question 35

what is the blood supply to the lower rectum

Answer 35

inferior and middle rectal vein - branch of internal iliac vein

Question 36

blood supply above dentate line

Answer 36

superior rectal vein - IMV

Question 37

where are the three veous anastomosis of portal and systemic systems found

Answer 37

1. oesophagus
2. rectum
3. umbilicus