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15 Cards in this Set
- Front
- Back
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Parathyroid hormone from?
Function? |
from chief cells.
increases ECF Ca by bone release and renal reabsorption |
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Calcitonin from?
function? |
c cells in thyroid
decreases ECF Ca by bone deposition and renal excretion Opposite of PTH |
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ECF Ca determined by? 3
regulated by? 2 |
intestinal reabsorption
renal excretion bone uptake/release PTH and calcitonin |
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hypercalcemia? 7
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depressed CNS
depresses muscle activity decreased QT constipation no apetite, peptic ulcers decreased GI motility, kidney stones |
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hypocalcemia?
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excited CNS
tetany (6-9.4) |
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Ca forms
only .1 percent available |
41-protien bound
9-anionic 50-ionized-available |
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Vitamin D affect on Ca?
must be concerted to? |
increased GI absorption of Ca and phos
decreases renal excretion of ca and phos 1,25 hihydroxycholcalciferol(liver) |
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califerol?
where formed? |
Vitamin D3
skin |
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high PTH?
hyperparathyroid |
rapid increase in serum Ca from bones
weak bones look for high alk phos secondary to osteoblasts |
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low PTH
hypoparathyroid |
tetany, low serum Ca, but strong bones
tx with vitamin D |
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what mediates the effects of PTH?
what controls PTH levels? |
cAMP
serum Ca concentration |
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Vitamin D deficiency in children?
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rickets-tetany, weak bones
expose to sunlight (vit d3) |
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a decrease in the bone matrix?
causes? |
osteoporosis
lack of vit C, exercise, age, cushings, malnutrition, low estrogen |
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a decrease in the bone calcification?
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ostomalacia, rickets
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teeth
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main body-dentin
mentin lines tooth socket 28-32 |
