Hydrophilic hormones and second messengers

Question 1

What hormones are secreted by the adrenal cortex?

Answer 1

Mineracorticoids- Aldosterone
and
Glucocorticoid- cortisol

Question 2

G Proteins, What are they?

Answer 2

A family of proteins that act as molecular switches inside cells, and are involved
in transmitting signals from a variety of stimuli outside a cell to its
interior

Question 3

What are the hydrophilic/ water soluble hormones?

Answer 3

: Catecholamines and Peptide Hormones

Question 4

Where d water solble hormones bind

Answer 4

Bind to receptor proteins at outer surface of plasma membrane (extracellular
receptors).

Question 5

Water soluble hormones are what kind of messengers?

Answer 5

First messengers

Question 6

What type of feedback look is ACTH

Answer 6

Negative

Question 7

Hypothalamic-pituitary-target endocrine organ reflex is what type of feedback loop? Explain.

Answer 7

-Negative

• Three systems are involved the hypothalamus, pituitary gland and the
  target organ
• Hypothalamic hormones stimulate the release of most anterior pituitary
  hormones
• Anterior pituitary hormones stimulate targets to secrete still more
  hormones (trophic hormones)
• Hormones from the final target organs inhibit the release of the anterior
  pituitary hormones

Question 8

 Hypothalamic hormones stimulate the release of most

Answer 8

anterior pituitary
hormones

Question 9

Anterior pituitary hormones stimulate targets to secrete still more
hormones. These pituitary hormones are called

Answer 9

trophic hormones

Question 10

 Hypothalamic-pituitary-target endocrine organ feedback loop:

Answer 10

: hormones
from the final target organs inhibit the release of the anterior pituitary
hormone