grandtour of the ailmetary canal Flashcards
what organs make up the digestive system
alimentary tract, gi and accessory orgs, salivary galnds, liver, panecase and gall bladder
whihc organs are held inplace in digestive sysem
acessory organs
digestion defion
break down of food into simple substances in which we can absorb
digestive absobpoin
passage of the end producs fo digesion form the gi tract into blo and lympath vessles
secreation
dischage of substancws froma cell, gland or organ
motility
abilyt of an organin to move indeply using metabolic energy
role of stomca
digest proteins, reducdes food to semi liquud for, stogae, steliliation, bread kdon lipid and carbs as well due to strength of muslces
role of pancrease
digestive ezymes for digestion of fats, carbs and proteins
role of liver
bile salts for digesion and absobsion of fats in small intestion
role of gall balld
stores and constes bile
role of smll intesing
final stage of digesion and abdoin of fats in small intesion
large intestine
water abspion , bacterial fermentaion and formation of faeces
exocrine meaning
removes substnce form body through section
endocrine meaning
adds substance to body through secretion
autcrine
a substance realed by a cell and acts on receptors of that cell to cause a desired reaction
para crein
a substance realed that works on a neighbour cell
what is the lengh of the gi tract
8 m
what are the 4 layers of the ailmenry cannan in orfer
mucosa
submucosa
muscularis exgterna
serosa adventiata
what are teh 3 layers of the muscos inorder
epithelum, lamina propria , muscularsi muscose
what is the role of the submucs
contains larger blood vessles
supports mucosa
contains nursions pelxues which
are submucos nerve plexus ssypathe or para sympathei
para sympatheic
what is the role of the muscularis mucosae,
provide exgtra muscular contractoin
what is the role of the lamina proper
prodice blood flow, pain senstaion, nurtivence, bind fcell to structre below
muscularis externa is found where
outside of tract in 2nd last layer
what is the muscusl externa made out of
smooth and longtiudial muscle
what is the advetion
a ct layer
when is the advetio called the sersoa
if inside the peritoneal cavity
peritnoeal cavity
stomac, small intesin and colon
what is the intramural plexus made up of
myenteric plexus and submucoas plexus
betwen what 2 layse is the myenteric plues
longitudial musle and serosa
between what 2 layers is the submucosal plexus
ciruclar musle layer and longitudial muslce layer
what type of epithelium is in the mouth , osephagus and anal canal
stratified squamous
what type of epithiln is in the stomach, small inteion and large intestine
simmple columnar
what can the epitlum do
statiee, section of diges emny, hormou and nmuc
simple - all pulse absiontion
how thick is the lamna propar
very thin
what type of muscle is the muscularis mucosae
thin smooth muses
what is the inner laryer of the muscularis externa
circular
what is the outer layer of the muscularsi externa
longitunal layer
peristalis
mobilty of food
enerteric nervous system menain
gut can contral itsles l
what happens with the parasympth innervaito of alimerny function
increas secrea nd motiliy
what is the sympathetic control on altimetry function
reduces section and motility
what is the nevre that contains parasympathetic control in gi
vagus (X)
what is the nerve that contols sympthi incerion in gi
splanchnic nerve
what is the nerve that cause parasympathetic salvation
facial (8) glossophayren (9)
what are the nerve group are assoiced with with autonaumic control
Long (parasympatheic ) and short ens reflexes
what structes are suppolied bythe cealie trunk and make up upper gi tract
stomac
small intestins
pancrease
liver
what stucres are in the middle gi tract
small intestine, caecum, ascending colon, transverse colon
what structures are in the lower git
descending colon, sigmoid coloin, rectum
what artery supplies the upper git
celiac trunk
what artery supplies middle git
superior mesenteric arteyr
what aretye supplies lweor git
inferior mesenteric artery
what vein drians the stomach
gastric veins
what vein drians the pancreas
splenci vein
what vein drains the saml intestine, caecum, ascending colon, transverse colon
superior mesneter vien
what vein drains the descending colon, sigmoid colon, rectum
inferior mesenter vein
what do the venous trains of the gi tract drin into
heptiac porta ein, then liver then hepit vein to ivc
