7. Thyroid Gland Physio Flashcards
1
Q
Which cells produce thyroid hormones? Which produce calcitonin?
A
Follicular cells = TH
Parafollicular cells = calcitonin
2
Q
What is the function of calcitonin?
A
Decrease calcium in blood (decrease bone resorption and inc bone deposition)
Antagonist to PTH
3
Q
How much iodine do you need per yr in mg?
A
50mg
4
Q
What is iodide trapping
A
Iodine in blood is grabbed by thyroid gland
5
Q
Thyroid gland stores TH. How long do these supplies last?
A
2-3 months
6
Q
What are the two binding proteins that bind TH
A
Thyroxine binding protein
Thyroxine binding pre-albumin
7
Q
To for thyroid storm
A
In order of admin:
- Beta blocker
- PTU
- Iodine
8
Q
What is the effect of giving large amounts of iodide?
A
Decreased thyroid activity
9
Q
Which thyroid hormone is produced more (include percentages)
A
T4=93%
T3=7%
