renal confusion: what's going on with the kidneys?

the adrenal cortex is composed of 3 zones, each of which secretes a separate class of hormones. Name the class of hormones associated with each zone:

1. zone G: Mineralocorticoids (salt)

2. zone F: Glucocorticoids (sugar)

3. zone R: Gonadocorticoids (sex)

the adrenal _____________ is the outer part and ONLY makes steroid hormones

cortex

the adrenal _________ is the inner part and ONLY makes amino acid based hormones

medulla

the adrenal medulla secretes _________________

catecholamines (E and NE)

the adrenal medulla is under control of ____________________

the sympathetic preganglionic fiber

the adrenal cortex is under control of __________________

ACTH

ACTH is secreted by ______________

the anterior pituitary

_______________ is secreted by the hypothalamus to promote ACTH

CRH (Corticotropin-Releasing Hormone)

ACTH acts on the adrenal _________________ to stimulate the release of ____________ and _______________

cortex; Cortisol and Gonadocorticoids

what are the 2 gonadocorticoids we talked about in class?

DHEA and androstenedione

what does DHEA do?

Estrogen precursor

What does androstenidione do?

testosterone precursor

what is the main mineralcorticoid we talked about in class?

aldosterone (from the RAAS)

what is the main glucocorticoid we talked about in class?

cortisol

what does cortisol do?

reduce inflammation, raises blood sugar level, bronchodilation, vasodilation, increase HR