Thyroid and parathyroid glands 27

Question 1

Where is the thyroid gland located?

Answer 1

Located below larynx/voice box. There are 2 throbes.

Question 2

What is secreted by follicular cells surrounding follicles?

Answer 2

Thyroxin (T4) & triiodothyronine (T3)

Question 3

what do T3 and T4 increase?

Answer 3

basal metabolic rate, protein synthesis & growth.

Question 4

blood levels of thyroid hormones are controlled by ?

Answer 4

Feedback through hypothalamus. ATP demand can also raise blood levels.

Question 5

What does calcitonin inhibit?

Answer 5

Osteoclasts, which decreases blood calcium levels. Blood calcium levels feedback to control calcitonin secretion.

Question 6

para thyroid gland is found where?

Answer 6

In the posterior aspect of thyroid gland (behind thyroid gland)

Question 7

What cells release parathyroid hormone (PTH)?

Answer 7

Chief cells.

Question 8

what do parathyroid glands do in the blood?

Answer 8

Increase calcium levels & decrease phosphate levels, regulating calcium, phosphate and magnesium in blood.