digestion and food tests Flashcards

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1
Q

oespophagus

A

muscles push food into stomach for peristalsis

, contraction and relaxation of circular muscles

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2
Q

mouth

A

broken down physically by and chemically by saliva, saliva contains amylase breakdown of starch

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3
Q

stomach

A

food churned back and forward by peristalsis
mixed with gastric juice which contains pepsin
also has hydorchloric acid for optimum ph

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4
Q

ileum

A

very long to allow time for absorption and digestion
large surface of microvilli for rapid diffusion
villi cells one cell thick short diffusion pathway
large network of blood vessels to carry away to maintain a concentration gradient.

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5
Q

trypsin

A

caesin ta amino acids trypin as an enzyme

how long it takes to see an X

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6
Q

digestion

A

chemical and mechanical bbreakdown of food, converts large nsoluble molecule into small soluble molecules

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7
Q

bile

A

made in the liver and stored in the gall bladder
neutralises stomach acid breaks up fat into smaller globules
neutralising allows enzymes to work ay optimum rate

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8
Q

glucose

A

benedicts
green yellow low levels
red high concentration

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9
Q

starch

A

iodine ,

blue black if present

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10
Q

proteins

A

biuret solution

blue to pink purp

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11
Q

what does dietary fibre

A

aids the movement of food through the gut

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12
Q

Vitamin A
C
D

A

A: improves vision keeps skin and hair healthy
C: prevents scurvy
D: needed for calcium absorbtion

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13
Q

calcium

iron

A

bones and teeth

needed in haemoglobin

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14
Q

panscreas

A

produces protease amylase, lipase,

releases these into the small intestine

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15
Q

rectum

A

faeces is stored here

last part of the large intestine

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16
Q

large intestine

A

where water is reabsorbed

17
Q

starch

maltose

A

amylase to maltose

maltase to glucose