Endocrineology (bone Maintenance)

Question 1

What is the function of parathyroid hormone?

Answer 1

• increase in plasma Ca2+
  
  • increases osteoclast activity= increase bone absorption
  • increase renal Ca2+ reabsorption
  • increase intestinal Ca2+ absorption through Vit. D

Question 2

What is the function of Calcitriol (vitamin D3)

Answer 2

• increase blood Ca2
  
  • Increase osteoclast activity
  • increase renal (kidney) Ca2_ reabsorption
  • increase intestinal Ca2+ absorption with parathyroid hormone

Question 3

What is the function of calcitonin?

Answer 3

• decrease blood Ca2+
  
  • inhibits osteoclast activity
  • increase renal Ca2+ secretion in kidney

Question 4

Where is calcitonin synthesized?

Answer 4

-thyroid gland

Question 5

What is osteoporosis?

Answer 5

-Bone loss