Summary
WJEC Biology Unit 2.4 Digestive System Summary
- Module
- Unit 2.4 Nutrition
- Institution
- WJEC
A summary of the human digestive system with all of the key functions that happen according to WJEC specification.
[Show more]
Seller
Follow
Content preview
☆MDÑ☆8L "9⑨fVfM⑧large insoluble ① Bucal Cavity tongue teeth
Mouth
, ,
molecules
mechanical Digestion chew
physical Processes
"
Small soluble
"
mastication ←
Molecules Glands
Bucalcavityl
starch Intestine -
① Mechanical Salivary chemical digestion
Digestion Amylase
.
Enzyme Maltose
Starch →
Intestine / ② Chemical Amylase
-
Lipids substances
-
water soluble
-
-
pancreatic Juice digestion dissolves
wafer -
condition
,
HC0j- Alkaline
Proteins stomach /
-
-
-
Mucus Lubricant
Intestine ( small)
-
-
Oliver ② Smooth muscle
Oesophagus
" -
"
Bilesalts
Bile production No ↑
lipids
Emulsify Surface digestion
Tension
Involuntary
-
Reduces More bolus
by central
-
Increases SA Red blood cell controlled
-
.
-
Bile Pigment → million Per
second
nervous
system .
-
Waste Product
Mouth
③ stomach
>
-
haemoglobin Gastric Juice
f)
dissolves water
Hcoj neutralise
HCl smooth Muscle Water -
-
-
soluble compounds
providing optimum pH
for
-
enzymes
_
Longitudinal -
hydrolysis
☒É%spw-
.
""
-
Circular
Protect
-
mucus
⑥ Duedenum
ggggg,%%¥%A
-
stomach lining
Entering the duedenwm Bite
Mechanical DigestionGoblet -
Lubrication
Protect
(from stomach PhD Hcoj
I
- _
Chyme( from cells '
alkaline
.
'
put
lining
-
cmucus)
-
Bite gallbladder Gastric
chief pepsinogen Oguri
-
'
means
and "ʳr)
_
Pit Is active .
Pancreatic Juice Pepsin Active
-
Rugae
-
-
parietal .tk/-Acidictokwer
.it?: -: : .F⇐". i. ÷. ÷g.i6ob1etcdls-
Intestinal Juice
cells PH
Villi / Microvilli Increase
.
-
-
"
-
Brunner's gland in
submucosa
Pancreatic Juice
.
Protects
Lubricates
oflibwkuhn
Trypsinogen
-
Crypts secrete
Mucus
chymotrypsin ogen
endopeptidase
.
- Punctual 's
Inactive
Acidic enzyme Lysosyme
cell
Breaks peptigoglycan
wall
hydrolysis carboxypeptidase
Inactive exopeptidase
⑦Ileum main function
absorption
-
mainly
water
"
⑧ 5ᵗʰ
.
"
""" """"
"""
"
monosaccharides
disaccharides Hydrolysis Hzo
-
other
eYeeed-Enzyme⊖ Oi → mono
Absorb some
_
-
_
Di to monopolymers monomers produced
'
polymers
/ glucose) bacteria
fixed in place polymers by
.
mono
intestinal
_
-
juice
-
Highconc gradient .
andPancreatic at surface
WJEC AS Unit 2.4: Adaptations for Nutrition can
22
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller kealanjones18. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
53022 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now