, Lec
DigestiveSystem #
1 :
(digestive tract) muscular , tube-like passage lined
allimentry Canal tissue
:
specialized contains and food from mouth
wI ,
glands
, guides
to arms
↳
physical (chewing churning) and chemical
(enzymatic) breakdown
but not part of
accessory organs ; support the
digestive processes ,
the main food passage
spreen
_
'
(colon]
Guodenum
/
ileum
Major Physiological processes of
Digestion
1 .
Ingestion+
: controlled intake of food into the moutn , involving
selection manipulation by teeth , tongue , and lips
7 :
Digestion : MouM :
mechanical and chemical breakdown
↑SA
↳
chewing :
,
making it easier for enzymes to react
↳
amylase produced by salivary glands
: to
beigin
breakdown of
complex carbohydrates
,3 .
Propulsion : movementof food + digestive materials turn
the
digestive tractcoordinated reflex
swallowing involving
↳ : mouth , throcty,
and to move food down
esophages
↳ peristalsis : rhythmic contractions of muscular walls
that propel food-
digestive materials forward
4 Bile :.
chemical breakdown ,
produced by the liver + stored in
The
gallbladder
↳ emulsipies fut - > did in digestion
S .
Stomach : mechanical + chemical breakdown
powerful contractions that mix food + gastric
churning
↳ :
juices(breaks down protein /But
enzymes pepsin- gastric lipage
" :
>
Stomach Acid Hel denatures activates
proteins
↳ :+
enzymes (microvilli)
6. Small intestine : mechanical + chemical breakdown
in
segmentatim
: nwntact blr Thythmi
toudt squeeringtw ixiug to crsure
digestire enayoueg residue
large intestine compaction absorption, indigestible
.
7 :
water
becomes solid >
compacted intofeces
-
8 Absupti nutrients frmsmall
bloodbassagelymphof iunesthe
-
into digested
umugnepieral oels lining thedigestre
traef
1 Defacation
.
:
rectum senses feces ->
triggers urge to defecate
faces the
sphincter relaxes ,
allowing
↳ anal to exit urus
Oral Cavity :
-mouth , 1st regio of digestive system
-
physical breakdown, chemical processing sensory
,
assesment
,
initiation of
and
swallowing
Steps :
1 .
Ingestion :
voluntary takingin of food
, 2 .
Mechanical digestion ,
carried by teeo jaw muscles
, generate
Porce whiletongue moves food be teeth
↳↑ SA of food for
enzymes
.
3 Good mixed / saliva /produced by salivary grands)
H . Bolus formed : soft ,
cohesiveし mass
↳ neededar safe -
eppicient swallowing
Enzymes : salivary amylase :
breaks down carbs /large)
Starches small
sugar Mit
> ↳ -
Protein
* + pat is NOT digested in the mouth
sensory evaluation : allows body to assess the food before it is
swallowed - >
tasce/ texture/temperature
↳ taste : faste buds (clusters ofsensory cells) , detect
chemicals-> brain =
Plavers
texture determines of food,
↳
sensory receptors :
, sapety
stimulates digestive reflexes ,
including saliva production
·
deglutition : initiation of swallowing (Final enuction]
Phalynx helps : with propulsion :
movement to the
esophagus
↓ of Teeth
Types :
teeth constitut the dentition
chewing/mastication
in mandible (v) and maxilla (t)
·
typically 16 teeth
Incisors :
blade-shaped ,
I roof ,
Font of mouth
cuseonl forclipping / cuttingroo
I foods
↳
grinding crushing
DigestiveSystem #
1 :
(digestive tract) muscular , tube-like passage lined
allimentry Canal tissue
:
specialized contains and food from mouth
wI ,
glands
, guides
to arms
↳
physical (chewing churning) and chemical
(enzymatic) breakdown
but not part of
accessory organs ; support the
digestive processes ,
the main food passage
spreen
_
'
(colon]
Guodenum
/
ileum
Major Physiological processes of
Digestion
1 .
Ingestion+
: controlled intake of food into the moutn , involving
selection manipulation by teeth , tongue , and lips
7 :
Digestion : MouM :
mechanical and chemical breakdown
↑SA
↳
chewing :
,
making it easier for enzymes to react
↳
amylase produced by salivary glands
: to
beigin
breakdown of
complex carbohydrates
,3 .
Propulsion : movementof food + digestive materials turn
the
digestive tractcoordinated reflex
swallowing involving
↳ : mouth , throcty,
and to move food down
esophages
↳ peristalsis : rhythmic contractions of muscular walls
that propel food-
digestive materials forward
4 Bile :.
chemical breakdown ,
produced by the liver + stored in
The
gallbladder
↳ emulsipies fut - > did in digestion
S .
Stomach : mechanical + chemical breakdown
powerful contractions that mix food + gastric
churning
↳ :
juices(breaks down protein /But
enzymes pepsin- gastric lipage
" :
>
Stomach Acid Hel denatures activates
proteins
↳ :+
enzymes (microvilli)
6. Small intestine : mechanical + chemical breakdown
in
segmentatim
: nwntact blr Thythmi
toudt squeeringtw ixiug to crsure
digestire enayoueg residue
large intestine compaction absorption, indigestible
.
7 :
water
becomes solid >
compacted intofeces
-
8 Absupti nutrients frmsmall
bloodbassagelymphof iunesthe
-
into digested
umugnepieral oels lining thedigestre
traef
1 Defacation
.
:
rectum senses feces ->
triggers urge to defecate
faces the
sphincter relaxes ,
allowing
↳ anal to exit urus
Oral Cavity :
-mouth , 1st regio of digestive system
-
physical breakdown, chemical processing sensory
,
assesment
,
initiation of
and
swallowing
Steps :
1 .
Ingestion :
voluntary takingin of food
, 2 .
Mechanical digestion ,
carried by teeo jaw muscles
, generate
Porce whiletongue moves food be teeth
↳↑ SA of food for
enzymes
.
3 Good mixed / saliva /produced by salivary grands)
H . Bolus formed : soft ,
cohesiveし mass
↳ neededar safe -
eppicient swallowing
Enzymes : salivary amylase :
breaks down carbs /large)
Starches small
sugar Mit
> ↳ -
Protein
* + pat is NOT digested in the mouth
sensory evaluation : allows body to assess the food before it is
swallowed - >
tasce/ texture/temperature
↳ taste : faste buds (clusters ofsensory cells) , detect
chemicals-> brain =
Plavers
texture determines of food,
↳
sensory receptors :
, sapety
stimulates digestive reflexes ,
including saliva production
·
deglutition : initiation of swallowing (Final enuction]
Phalynx helps : with propulsion :
movement to the
esophagus
↓ of Teeth
Types :
teeth constitut the dentition
chewing/mastication
in mandible (v) and maxilla (t)
·
typically 16 teeth
Incisors :
blade-shaped ,
I roof ,
Font of mouth
cuseonl forclipping / cuttingroo
I foods
↳
grinding crushing
