calcium Flashcards
sources of calcium
leafy green vegetables - spinach
sardines
sesame seeds
dairy products
biological functions (1)
aids the formation of strong teeth and bones, bones regenerate throughout our lives through the constant absorption and deposition of calcium
biologivcal function (2)
assists blood clotting which is necessary if an injury causes damage to blood vessels
biologival function (3)
aids normal muscle contraction
effects of deficiency (1)
increased risk of bone disease such as rickets, osteomalacia, osteoporosis and tooth decay
effects of deficiency (2)
slow blood clotting of ruptured blood vessels this can cure haemorrhaging
effects of deficiency (3)
muscles fail to relax after contraction, this can causes muscular spasms, cramps and convulsion
identify a vitamin necessary for the absorption of each of the minerals iron and calcium
calcium - vitamin D
iron - vitamin C
factors that assist calcium absorption - 1
vitamin d stimulates the proaction of calcium binding protein
factors that assist calcium absorption - 2
the hormone oestrogen, produced in the ovaries, promotes lacium absorption
factors that assist calcium absorption - 3
phosphorus combines with calcium, creating calcium phosphate, which is easier to absorb
factors that assist calcium absorption - 4
an acid environment
factors that hinder calcium absorption - 1
tannins present in tea and coffee bind to calcium, inhibiting absorption
factors that hinder calcium absorption - 2
excess dietary fibr binds to calcium
factors that hinder calcium absorption - 3
excess fat binds with calcium, creating insoluble and non absorbable calcium soaps
