Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Promoted
what substances are secreted by the endocrine system?
Update:
why are they similar to catalyst?
1 Answer
Relevance
- Anonymous1 decade agoFavorite Answer
The endocrine system is a collection of glands that secrete chemical messages we call hormones. These signals are passed through the blood to arrive at a target organ, which has cells possessing the appropriate receptor.
They have a specific shape and bring about changes like an enzyme does.
Still have questions? Get your answers by asking now.