as well as bone health what else is calcium an important ion for?
blood clotting
2 of 16
3 sections feeding into pools of extracellular calcium? elect incorrect answer
large intestine
3 of 16
name for bone-forming cells
Secrete osteoid (forms bone matrix)
Also begin mineralisation
Osteoblasts
4 of 16
name for mature osteoblast
No longer secretes matrix, but is surrounded by it
Maintains metabolism, and participates in nutrient/waste exchange via blood
Osteocytes
5 of 16
name for Osteoclasts
Function in resorption and degradation of existing bone
opposite of osteoblasts
Regulate Ca2+ release from bone
Osteoclasts
6 of 16
select incorrect statement about osteoclasts
digest lipophilic molecules to prevent deficiency e.g. hypothyroid
7 of 16
treatment for osteoporosis
bisphosphonates
8 of 16
how many parathyroid glands are there
4
9 of 16
what of PTH is not true
Secretion controlled by Vitamin K - reduces PTH as a secondary mechanism (-ve feedback)
10 of 16
effect of PTH on PLASMA Ca2+ LEVELS
increase
11 of 16
effect of PTH on PLASMA PHOSPHATE LEVELS
decrease
12 of 16
what's untrue of HYPERPARATHYROIDISM
Treatment: dehydration, i.v. trisphosphonates, calcitonin (moderate cases), treat underlying cause
13 of 16
vitamin D is obtained from sun (UV on skin), food, supplements, but where is it made (subsequent to needing w hydroxylation reactions to be activated?
cholesterol
14 of 16
working in opposite way to PTH, what is untrue about CALCITONIN
is a physiological agonist to PTH
15 of 16
what is untrue about Calcium metabolism
calmodulin and angiotensin 2 play a vital role in ca2+reuptake in adrenal glands
16 of 16
Other cards in this set
Card 2
Front
as well as bone health what else is calcium an important ion for?
Back
blood clotting
Card 3
Front
3 sections feeding into pools of extracellular calcium? elect incorrect answer
Back
Card 4
Front
name for bone-forming cells
Secrete osteoid (forms bone matrix)
Also begin mineralisation
Back
Card 5
Front
name for mature osteoblast
No longer secretes matrix, but is surrounded by it
Maintains metabolism, and participates in nutrient/waste exchange via blood
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