UTA A&P II Ch. 18 Endocrine System Questions With
Complete Solutions
2nd messenger of water-soluble protein hormone action Correct
Answer chemical messenger NOT protein
Not necessarily 2nd in the pathway!
May act as enzyme activator, inhibitor, or cofactor
Results in change in rates of metabolic reactions
ACTH Correct Answer stimulates release of glucocorticoids by
cortex (outer portion) of the adrenal glands
Adrenal cortex Correct Answer site of secretion of steroid
hormones aldosterone and cortisol
adrenal medulla Correct Answer site of secretion of
catecholamines
Aldosterone Correct Answer stimulus low blood pressure or
blood volume, renin system activates it or high K+
Functions to raise blood pressure and volume by conserving
water at kidneys
How? Increase Na+ absorption in kidneys, water follows,
increase blood volume and therefore pressure
Antagonistic effect- Correct Answer hormone actions oppose
each other
antagonistic effects of insulin and glucagon Correct Answer
When levels rise: Beta cells secrete insulin, stimulating transport
of glucose across plasma membranes
When levels decline: Alpha cells release glucagon, stimulating
glucose release by liver
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Classroom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.