The Food Pathway-GI system

7/24/2019 The Food Pathway-GI system

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Good Afternoon


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S SEE HOW MUCH DO YOU REMEMB

QUIZ TIME!

On a half sheet of paper, write thename of each colored organ:


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1. Light

Green:2. Red:

3. Pin:

!."rown:

#.P$rple:

%. &arGreen:

'. (ellow:


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by: JELLY ROSEB.OTAYDE

Anatomy &PhysiologyOFTHE DIGESTIVE SYSTEM


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OBJECTIVES:At the end of the class, st$dentswill )e a)le to:

1. identif* the organs that mae$p the digesti+e s*stem

2. descri)e how the organs of thedigesti+e s*stem wor together

to carr* o$t digestion of food.


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DIESTIVE

SYSTE!


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Dig)stion

Phases -ncl$de1. -ngestion

2. echanical and /hemical&igestion

3.A)sorption

!. 0limination&efecation


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*.ORAL CAVITY +!O,T#-

Dig)sti) a/tion:

!asti/ation)reaingof food to smallerparts: mechanical)readown

Salia0y glan1s:sali+a moistens andsoftens the food forswallowing

Salia0y amylas):

con+erts starch tomaltose adisaccharide or toshorter chains gl$cose

4ome a)sorption of


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" a m2s/2la0

3assag) b)t4))nth) o0al /aityan1 th)

)so3hag2s" no 1ig)sti)a/tion o//20s

" /ontin2)s th)mo)m)nt o5 th)bol2s by th)

0)6)7i) a/tion o5

8. P#ARY$9


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" is a m$sc$lar t$)e a)o$t 15

inches long that taes foodfrom phar*!6 to stomach

7 no digesti+e action occ$rs

7 peristalsis forces the )ol$sinto the stomach with thehelp of the m$co$s secretions

7 Ca01ia/ s3hin/t)0:opening

to the stomach closes afterentering of the food topre+ent reg$rgitation

. ESOP#A,S


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7 is a 87shaped sac thate6tends from esophag$s

to the small intestines." R2ga):fold in m$co$smem)ranes smooth o$twhen stomach is f$ll the*allow the stomach toe6pand.

7 4er+es as reser+oir of

food7 it taes !7% ho$rs for thefood to pass completel*to the small intestines

.STO!AC#


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30ot)in b)gins an1 520th)0m)/hani/al 1ig)stion o//20s

" Som) 4at)0 an1 min)0als

The Food Pathway-GI system

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