Calcium Basics Flashcards
what is the range for Ca
8.4-11
99% of Ca is stored in ___ & ____
bones & teeth
what are the 3 functions of Ca (3 Bs)
Bones
Blood
Beats
what 3 forms can Ca be found
bound
ionized
complexed
where is ca bound if it is found this way and how much of ca is bound
bound to proteins
less than 50%
where is ionized Ca found and how much of calcium is ionized (most important)
in serum
50%
complexed ca is combined with what nonprotein anions (3)
phosphate
citrate
carbonate
ionized ca activates body chemical ____
reactions
ionized ca stimulates muscle _____ & ______
contraction & relaxation
ionized ca promotes transmission of ______ impulses
nerve
ionized ca stimulates cardiac _____ & _______
contractility & automaticity
ionized ca promotes formation of ______
prothrombin
what are the 4 calcium regulators
Parathyroid hormone (PTH)
Calcitonin
Phosphate
Vit D
PTH pulls Ca from ____
bones
PTH increases Ca concentration in ____
blood
PTH increases Ca absorption from ____ & _______ _______
GI
renal tubles
what is calcitonin secreted by
thyroid
Calcitonin keeps Ca in ___
bones
calcitonin is an antagonist of
PTH
Secretion of calcitonin is stimulated by high serum ____
Ca
Calcitonin inhibits Ca reabsorption from ___
bone
phosphate has a ____ relationship w/ ca
reciprocal
when ca goes up phosphate goes
down
Vit D is necessary for ___ & ____ of Ca
absorption & utilization
what foods are high in Ca (5)
mushroom
tuna
spinach
fatty fish
egg yolks
