17.11- Pineal gland

Question 1

What does the pineal gland secrete?

Answer 1

Melatonin- effects sleep and gonadotropin releasing hormone.

Excessive melatonin release can delay puberty.

Question 2

What are chief cells? What do they do?

Answer 2

They are common parathyroid cells.
Produce parathyroid hormone.
Causes increase in blood calcium levels.

Question 3

What does the thymus do?

Answer 3

Maturation of T lymphocytes.

Question 4

What does endocrine tissue in the heart do?

Answer 4

Synthesizes and releases atrial natriuretic peptide- response to increase stretch in the atrial wall.
This stimulates kidneys to increase urine output and blood vessels to dilate.

Question 5

Endocrine in the kidneys releases?

Answer 5

Erythropoietin- causes red blood cell production.

Question 6

Endocrine in the liver releases?

Answer 6

Angiotensinogen- powerful blood vessel constrictor, kidneys to decrease urine output, stimulates thirst centers.