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22 Cards in this Set
- Front
- Back
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Growth Hormone (hGH) causes
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Increase in the size and number of cells
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Excess hGH in childhood results in
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Gigantism
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Excess hGH in adulthood results in
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Acromegaly
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Insufficient hGH in childhood results in
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Pituitary dwarfism
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Prolactin stimulates
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Milk FORMATION (oxy –> milk letdown)
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What three classes of hormones are made in the adrenal cortex?
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Aldosterone, Cortisol, Androgens (male hormones)
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What do adrenal androgens do?
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Trigger puberty
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What happens to the Ca++ levels in tissue when bone is made?
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Ca++ levels are LOWERED
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What happens to the Ca++ levels in tissue when bone is broken down?
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Ca++ levels are RAISED
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What happens to the Ca++ levels in tissue when the kidney retains Ca++??
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Ca++ levels are RAISED
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What happens to the Ca++ levels in tissue when the kidney excretes Ca++?
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Ca++ levels are LOWERED
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What does Calcitonin do?
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LOWERS Ca++ levels
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How does Calcitonin work?
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Stimulates bone formation, stimulates renal excretion of Ca++
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How is Calcitonin controlled?
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Direct effect
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What does Parathyroid Hormone do? PTH
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RAISES Ca++ levels
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How does PTH work?
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Stimulates bone break down, stimulates renal retention of Ca++, stimulates renal activation of Vitamin D
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How is PTH controlled?
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Direct Effect
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What does vitamin D do?
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Enhances absorption of Ca++ in the intestines
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What do osteoblasts do? |
make bone |
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What do osteoclasts do? |
Break down bone |
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Where is calcitonin made? |
Thyroid (extrafollicular cells) |
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Where is PTH made? |
in the parathyroid glands |
