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22 Cards in this Set

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

What do osteoblasts do?

make bone

What do osteoclasts do?

Break down bone

Where is calcitonin made?

Thyroid (extrafollicular cells)

Where is PTH made?

in the parathyroid glands