Lab 16 The Digestive System
w w w w BIO202L
(Lab 16) Straighter line Anatomy & Physiology II
LAB BIO 202L The Digestive System Worksheet
2025 (Tested)
StudentwName:
AccesswCodew(locatedwonwthewlidwofwyourwlabwkit):
LabwReportwFormatwExpectations
Utilizewcollegewlevelwgrammarwandwprofessionalwformattingwwhenwcompletingwthiswworksheet.wSubmissi
onswwithoutwproperwformatting,wallwrequiredwphotosworwsufficientwresponseswwillwbewrejected.wPre-
wlabwQuestions
1. Explainwthewdigestionwthatwoccurswinwtheworalwcavity.
Oralwdigestionwiswreferredwtowaswmechanicalwdigestion.wMasticationwiswhowwfoodwparticleswinwth
ewmouthwcavitywarewreducedwinwsize.wSalivawfacilitateswthewprocesswofwchemicalwdigestion,wprod
ucingwthewenzymeswneededwtowbreakwdownwfood.
2. Whatwiswthewfunctionwofwthewliverwinwdigestion?
Thewvastwmajoritywofwthewamountswofwchemicalswinwbloodwarewregulatedwbywthewliver,wwhichwa
lsowexcreteswawsubstancewcalledwbile.wThiswhelpswthewliverwgetwridwofwtrash.wAllwbloodwthatwle
aveswthewstomachwandwintestineswendswupwinwthewliver.
3. Whatwrolewdoeswthewgallwbladderwplaywinwdigestion?
Thewbodywneedswbilewfromwthewliver,wwhichwiswkeptwinwthewgallbladderwandwreleasedwintowthewdu
odenum,wtowbreakwdownwandwabsorbwdietarywlipidswandwfats.
4. Whywiswtheworientationwofwmusclewofwthewstomachwwallwimportant?wHowwdoeswthiswcontributewto
witswfunction?
Allwofwtheseworientationswarewnecessarywforwthewstomachwtowdigestwfoodweffectively,wwhichwiswaw
processwthatwinvolveswthewstomachwagitatingwandwsqueezingwmaterial.wAlthoughwtheywcanwmovew
inwanywdirection,wthewmusclewtissueswthatwcomprisewthewstomachwwallwpreferwtowmovewinwcircula
r,wdiagonal,wandwlongwaxes.wThewhydrochloricwacidwbreakswdownwthewmealwparticleswevenwfurther
,Lab 16 The Digestive System
w w w w BIO202L
intowchyme.
w
, Lab 16 The Digestive System
w w w w BIO202L
EXPERIMENTw1:wMICROSCOPICwANATOMYwOFwTHEwDIGESTIVEwSYSTEM
IntroductionwQuestions
1. Labelwthewitemswinwthewfollowingwslidewpictures.
A. lamina
B. epithelia
C. submucosa
w w w w BIO202L
(Lab 16) Straighter line Anatomy & Physiology II
LAB BIO 202L The Digestive System Worksheet
2025 (Tested)
StudentwName:
AccesswCodew(locatedwonwthewlidwofwyourwlabwkit):
LabwReportwFormatwExpectations
Utilizewcollegewlevelwgrammarwandwprofessionalwformattingwwhenwcompletingwthiswworksheet.wSubmissi
onswwithoutwproperwformatting,wallwrequiredwphotosworwsufficientwresponseswwillwbewrejected.wPre-
wlabwQuestions
1. Explainwthewdigestionwthatwoccurswinwtheworalwcavity.
Oralwdigestionwiswreferredwtowaswmechanicalwdigestion.wMasticationwiswhowwfoodwparticleswinwth
ewmouthwcavitywarewreducedwinwsize.wSalivawfacilitateswthewprocesswofwchemicalwdigestion,wprod
ucingwthewenzymeswneededwtowbreakwdownwfood.
2. Whatwiswthewfunctionwofwthewliverwinwdigestion?
Thewvastwmajoritywofwthewamountswofwchemicalswinwbloodwarewregulatedwbywthewliver,wwhichwa
lsowexcreteswawsubstancewcalledwbile.wThiswhelpswthewliverwgetwridwofwtrash.wAllwbloodwthatwle
aveswthewstomachwandwintestineswendswupwinwthewliver.
3. Whatwrolewdoeswthewgallwbladderwplaywinwdigestion?
Thewbodywneedswbilewfromwthewliver,wwhichwiswkeptwinwthewgallbladderwandwreleasedwintowthewdu
odenum,wtowbreakwdownwandwabsorbwdietarywlipidswandwfats.
4. Whywiswtheworientationwofwmusclewofwthewstomachwwallwimportant?wHowwdoeswthiswcontributewto
witswfunction?
Allwofwtheseworientationswarewnecessarywforwthewstomachwtowdigestwfoodweffectively,wwhichwiswaw
processwthatwinvolveswthewstomachwagitatingwandwsqueezingwmaterial.wAlthoughwtheywcanwmovew
inwanywdirection,wthewmusclewtissueswthatwcomprisewthewstomachwwallwpreferwtowmovewinwcircula
r,wdiagonal,wandwlongwaxes.wThewhydrochloricwacidwbreakswdownwthewmealwparticleswevenwfurther
,Lab 16 The Digestive System
w w w w BIO202L
intowchyme.
w
, Lab 16 The Digestive System
w w w w BIO202L
EXPERIMENTw1:wMICROSCOPICwANATOMYwOFwTHEwDIGESTIVEwSYSTEM
IntroductionwQuestions
1. Labelwthewitemswinwthewfollowingwslidewpictures.
A. lamina
B. epithelia
C. submucosa
