Thyroid Gland

Question 1

Thyroid gland
-what does it regulate (2)
-located where

Answer 1

calcium and metabolism
-H shaped on each side of trachea below larynx

Question 2

1. Role in metabolism
   -what hormone stimulates it to release which 2 hormones
   -what is iodine needed for and why
   -idodine deficnecy leads to what

Answer 2

TSH from pituitary stimulates it to release Thyroxine (t4) and (T3)
-iodine is needed in the diet for production of the thyroid hormone, as the body cannot produce itself
-enlargement of the thyroid, goiter

Question 3

What are the 3 functions of thyroxine?

Answer 3

affects all tissue
increases metabolic rate
regulates growth

Question 4

Hyposecretion of thyroxine
-what is it called
-symptoms (4)
-treatments (2)

Answer 4

hypothyroidism
-low energy, weight gain, low body temp, constipation
-increase iodine in diet and synthetic thyroxine

Question 5

Hypersecretion of thyroxine
-what is it called
-symptoms (5)
-treatments (3)

Answer 5

-hyperthroidism
-increase in metabolism, nervous, high body temp, bulging eyes, diarrhea
-antithyroid meds, radioactive idodine, surgery to remove

Question 6

Thyroid role in calcium regulation
-responds to changes in what
-what is the situation
-what is the response to the situation (aka what does the thyroid)
-what does calcitonin do (2)
-why is calcium essential (4)

Answer 6

-blood calcium levels
-too high blood calcium
-thyroid releases calcitonin
-lowers blood calcium levels by stimulating calcium deposition in bones and reducing calcium uptake into intestines and kidneys
-bone, muscle, nerve fucntioning anf blood clotting