Lp 68

Question 1

-price factor regulating blood Ca
2 mechanisms:
-short term ( absorption from bone)
-log term (increase absorption from intestine & kidney tubules & increase vit.D activation)

Answer 1

PTH

Question 2

2 mechanisms for depletion of bone Ca2+?

Answer 2

-transport of Ca+2 out of bone
-osteoclastic activity

Question 3

1st hypothyroidism d/t?

Answer 3

-surgical removal of thyroid/ parathyroids
-idiopathic autoimmune phenomena
-infection
-metastatic tumour
-heavy metal damage
-congenital absence of parathyroid glands

Question 4

Hypoparathyrodism may progress to?

Answer 4

-laryngeal spasms
-death
-respiratory mm paralysis

Question 5

Tetany in respiratory mm=
Decrease osteoclastic activity=
Hyposecrtion of PTH can be d/t?

Answer 5

Fatal
Decrease bone remodelling
Rare hereditary condition

Question 6

Hyperparathyroidism d/t

Answer 6

Tumour
Often asymptomatic

Question 7

Increase PTH secretion=

Answer 7

In bone weakness
Ex: osteoclast proliferation, honeycomb cavities, weak & brittle bones, bone # is often 1st sx of increase PTH)

Question 8

Pancreatitis?

Answer 8

Stones in pancreatic ducts

Question 9

Hypercalciuria?

Answer 9

-decrease urine concentration results in diuresis
-predisposes to kidney stones