Transcript digestion and absorption

What is absorption?
The digested food molecules
enter the circulatory system.
What food substances are
absorbed by Z?
Z
Lipid soluble substances: fatty acid,
glycerol, vitamin A, D, E, K
Blood in Y will first transport
to….through……
Y
liver; hepatic portal vein
Stomach
Digestive juice
Gastric juice
What is X?
X
Villus
Physical digestion
function
Increase surface area of food for
digestive enzyme to act on
What is L?
Pancreas
Mouth
Digestive juice
Saliva
What is egestion?
The undigested materials are
removed from the body as faeces.
Saliva
contain
Salivary amylase,
water
What is E?
Ileum
Digestion of
protein starts at
K
What is the fluid inside Z?
Z
Lymph
Chemical digestion
by
Digestive enzymes
Mouth
Physical digestion by
Chewing of teeth
Bile
Physical digestion by
Emulsify fat to oil droplet to increase
surface area for lipase to act on
Villus
number
Large number to increase
surface area
Liver
Digestive juice
Bile
Small intestine
Digestive juice
Intestinal juice
Small intestine is long
because
It can provide more time to digest
and absorb food substances.
Saliva
Secreted by
Salivary gland
Bile
contain
Bile salt, hydrogencarbonate salt,
bile pigment
Pancreatic juice
contain
Amylase, protease, lipase,
Hydrogencarbonate salt
Gastric juice
contain
Protease,
hydrochloric acid
What is Z?
Z
Lacteal
Intestinal juice
contain
Carbohydrase,
protease
Lipase
Can be found in
Pancreatic juice
Which part absorbs
the largest amount
of nutrient?
E
Amylase
Can be found in
Saliva, pancreatic juice
Food move in alimentary canal
by
peristalsis
Which part is acidic?
stomach
Villus
shape
Finger like to increase
surface area for absorption
What is Y?
Y
Blood capillaries
What is ingestion?
Food is taken in through the
mouth.
What is digestion?
Food is broken down into soluble
and simple molecules.
What is assimilation?
The absorbed food molecules are
taken up by cells for metabolism.
What is N?
Rectum
Bile
Secreted by
Liver
Stomach
Physical digestion by
Churning of muscle
State two features of X that allow it
to absorb food substances easily.
X
X is finger like to increase surface area to absorb food.
There are lots of X in small intestine to increase surface
area to absorb food.
Which part
stores faeces?
N
What food substances are
absorbed by Y?
Y
Water soluble substances: glucose,
amino acid, vitamin C, minerals, water
What is B?
Gall bladder
Intestinal juice
Secreted by
Intestinal gland in
small intestine
Gastric juice
Secreted by
Gastric gland in
stomach
Pancreas
Digestive juice
Pancreatic juice
Pancreatic juice
Secreted by
Pancreas
Stomach
Is protected by
mucus
What part is
acidic?
K
Which part of our body can villi be found?
ileum
3 examples of physical
digestion are
Churning of muscle in stomach
Chewing by teeth in mouth
Emulsification by bile salt in duodenum