20/12/18

Question 1

What enzymes are released in the acrosome reaction?

Answer 1

Hyalauronidase and Proteolytic enzymes

Question 2

What is layer of cells on the outside of a blastocyte?

Answer 2

Trophoblast cells - forms chorion (placenta)

Question 3

What causes epididymal secretions?

Answer 3

Androgens

Question 4

What factor promotes angiogenesis during decidualisation?

Answer 4

TGF-b

Question 5

What is inactive and acitive forms of vitamin D called?

Answer 5

Calciferol –> Calcitriol

Question 6

What does calcium bind to on PT, causing what to occur?

Answer 6

It binds to calcium sensing receptors - which inhibits PTH secretion

Question 7

Normal serum range of Ca2+

Answer 7

2.2-2.6 mmol/L

Question 8

Apart from affecting calcium what else does vitamin D?

Answer 8

Increases phosphate reabsorption in the gut

Question 9

What are the causes for low PTH?

Answer 9

Autoimmune

Magnesium deficiency - required for PTH to work

Question 10

What are the diagnostic features of high Ca2+ but low PTH characteristic of?

Answer 10

hypercalcaemia of malignancy

Question 11

What is used to treat vitamin D deficient patients with renal failure?

Answer 11

Alfacalcidol - 1a hydroxycholecalciferol