If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Unit 7: Endocrine system physiology and disease

About this unit

You can’t really point to any single organ as “the endocrine system,” because they’re actually a family of glands that secrete hormones into the body. Hormones travel through the bloodstream to interact with specific target cells and organs. This signaling system helps to keep the entire body well-balanced and on the same page.

Learn

  • No videos or articles available in this lesson