Flashcards in digestive system Deck (23)
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1
what enzymes that are in saliva do the salivary glands release and what does it do?
Amylase - hydrolyses starch into maltose and then glucose
2
what does the epiglottis do?
stops the bolus of food from entering the trachea and prevents choking
3
what do the salivary glands do?
work alongside the tongue to form food into a bolus and lubricate the oesophagus
4
what is the oesophagus
the oesophagus is a 25cm long piece of muscle that uses peristalsis to push the food down to the cardiac sphincter before entering the stomach.
5
Define Peristalsis using the oesophagus as an example
the involuntary constriction and relaxation of the muscles of the oesophagus, creating wave-like movements which push the contents of the oesophagus forward.
6
what is the pancreas' role in digestion
to produce biological catalysts and enzymes to speed up the digestive reactions.
7
what does the liver do?
the liver produces bile
8
what does bile do
bile helps with the digestion of lipids
9
what are lipids
fats and oil
10
where is bile produced
liver
11
where is bile stored
in the gall bladder
12
what organ absorbs food into the blood stream
small intestine
13
what does the intestine do
absorbs the nutrients of food into the blood stream.
14
what organ absorbs excess water back into the body
large intestine
15
what does the large intestine do
absorbs water back into the bloodstream
16
what does the rectum do
stores any waste products from digestion as faeces.
17
what does the anus do
let the faeces exit the body
18
what enzyme breaks down lipids?
lipase
19
what enzyme breaks down protein
protease
20
what enzymes breaks down carbohydrates
amylase and other carbohydrase
21
what does lipase hydrolyse lipids into
fatty acids and glycerol
22
what does protease hydrolyse protein intp
amino acids
23
