calcium Flashcards

1
Q

sources of calcium

A

leafy green vegetables - spinach
sardines
sesame seeds
dairy products

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2
Q

biological functions (1)

A

aids the formation of strong teeth and bones, bones regenerate throughout our lives through the constant absorption and deposition of calcium

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3
Q

biologivcal function (2)

A

assists blood clotting which is necessary if an injury causes damage to blood vessels

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4
Q

biologival function (3)

A

aids normal muscle contraction

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5
Q

effects of deficiency (1)

A

increased risk of bone disease such as rickets, osteomalacia, osteoporosis and tooth decay

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6
Q

effects of deficiency (2)

A

slow blood clotting of ruptured blood vessels this can cure haemorrhaging

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7
Q

effects of deficiency (3)

A

muscles fail to relax after contraction, this can causes muscular spasms, cramps and convulsion

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8
Q

identify a vitamin necessary for the absorption of each of the minerals iron and calcium

A

calcium - vitamin D
iron - vitamin C

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9
Q

factors that assist calcium absorption - 1

A

vitamin d stimulates the proaction of calcium binding protein

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10
Q

factors that assist calcium absorption - 2

A

the hormone oestrogen, produced in the ovaries, promotes lacium absorption

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11
Q

factors that assist calcium absorption - 3

A

phosphorus combines with calcium, creating calcium phosphate, which is easier to absorb

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12
Q

factors that assist calcium absorption - 4

A

an acid environment

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13
Q

factors that hinder calcium absorption - 1

A

tannins present in tea and coffee bind to calcium, inhibiting absorption

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14
Q

factors that hinder calcium absorption - 2

A

excess dietary fibr binds to calcium

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15
Q

factors that hinder calcium absorption - 3

A

excess fat binds with calcium, creating insoluble and non absorbable calcium soaps

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16
Q

factors that hinder calcium absorption - 4

A

physic acid in wholegrain bread binds to calcium