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Calcium homeostasis: hormones

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      • Question
      • Answer
      • Through which mechanism does vitamin D promote transcription?
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      • Vitamin D [...]creases phosphate plasma levels.
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      • Which 2° messenger is involved in the inhibition of osteoclast activity in response to calcitonin?
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      • Which 2° messenger is involved in the activation of PTH secretion in response to low Ca2+ levels?
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      • Calcitonin [...]creases osteoclast activity.
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      • Which disease does vitamin D deficiency cause in adults?
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      • PTH increases renal Ca2+ [...]tion.
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      • Calcitonin [...]creases plasma phosphate levels.
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      • Calcitonin [...]creases plasma Ca2+ levels.
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      • What effect does PTH have on collagen synthesis in osteoblasts?
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      • Vitamin D is [...]ed once in the liver and again in the kidney to activate it.
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      • Calcitonin is secreted when plasma Ca2+ levels are [...].
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      • There are PTH receptors on osteo[...]asts.
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      • Glucocorticoids [...]crease Ca2+ excretion.
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      • Are there vitamin D receptors on osteoblasts?
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      • PTH [...]creases Ca2+ and phosphate uptake from the gut.
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      • Where in the body is vitamin D synthesized in its inactive form?
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      • Which enzyme needed for vitamin D activation does PTH activate?
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      • Do vegan diets contain vitamin D?
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      • PTH [...]creases phosphate plasma levels.
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      • Hypoparathyroidism due to receptor malfunction is called [...].
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      • Are there PTH receptors on osteoblasts?
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      • Hyperparathyroidism leads to [...]calcaemia.
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      • What 3 groups are most at risk of vitamin D deficiency in the UK?
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      • PTH [...]creases renal phosphate reabsorption.
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      • Glucocorticoids [...]crease Ca2+ absorption.
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      • Vitamin D [...]creases the reabsorption of Ca2+ in the kidney.
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      • 1-alpha-hydroxylase is needed to activate vitamin [...].
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      • What effect does PTH have on the reabsorbtion of (PO4)2-?
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      • Vitamin D receptors are found on osteo[...]asts.
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      • Are there PTH receptors on osteoclasts?
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      • Hypoparathyroidism due to mutant PTH is called [...].
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      • PTH [...]crease plasma Ca2+ levels.
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      • How does PTH binding to osteoblasts affect osteoclast activity?
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      • Vitamin D [...]creases Ca2+ plasma levels.
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      • Which population is most at risk of vitamin D intoxication?
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      • PTH inhibits [...] synthesis in osteoblasts.
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      • PTH is released into the blood in response to low plasma levels of which ion?
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      • Which 2° messenger is involved in inhibiting osteoblast collagen synthesis in response to PTH?
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      • What are the symptoms of vitamin D intoxication (2)?
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      • What effect does oestrogen deficiency have on bone?
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      • What does a person's dietary requirement of vitamin D depend on?
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      • In which 2 organs is vitamin D hydroxylated to activate it?
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      • Calcitonin is secreted by the [...] or [...] cells of the thyroid.
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      • Which disease does vitamin D deficiency cause in children?
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      • Are there vitamin D receptors on osteoclasts?
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      • Vitamin D promotes the synthesis of which protein family?
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      • Which 2° messenger is involved in the inhibition of PTH secretion in response to low Ca2+ levels?
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      • Can Ca2+ levels be effectively controlled in the absence of calcitonin?
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      • Vitamin D is synthesized upon exposure to [...].
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      • Why is vitamin D not an essential vitamin?
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      • Hypoparathyroidism leads to [...]calcaemia.
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      • There are vitamin D receptors on osteo[...]asts.
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      • Thyroid hormone [...]crease bone resorption.
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      • Which hormone is released from the parathyroid gland in response to low plasma Ca2+ levels?
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      • Vitamin D [...]creases the reasorption of phosphate in the kidney.
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      • Which part of the cell does vitamin D act on to stimulate Ca2+ absorption?
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Tags

Mbbs2, Sc13, Sc13l06, Bone, Physiology, Nutrition

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