Uploaded September 2024 | Updated September 2026, 2 days ago

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In this video, we look at the endocrine system. First we explore what is meant by endocrine glands and compare these to exocrine glands. We then look at the different types of molecules that can act as endocrine hormones. Finally, we explore how steroid hormones and non-steroid hormones trigger a response in their target cells. This includes the role of second messengers such as cyclic AMP.

Image credits

Endocrine system
commons.wikimedia.org/wiki/File:Endocrine_English.svg
OpenStax & Tomáš Kebert & umimeto.org, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Sweat
commons.wikimedia.org/wiki/File:Amanda_Fran%C3%A7ozo_At_The_Runner_Sports_Fragment.jpg
Bibikoff, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

ADH
commons.wikimedia.org/wiki/File:Vasopressin_labeled.png
Edgar181, Public domain, via Wikimedia Commons

Human Insulin
commons.wikimedia.org/wiki/File:Human_Insulin.jpg
Zappys Technology Solutions, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Testosterone
commons.wikimedia.org/wiki/File:Testosterone.PNG
Klaus Hoffmeier, Public domain, via Wikimedia Commons

Adrenaline
commons.wikimedia.org/wiki/File:Epinephrine.svg
Roland Mattern, Public domain, via Wikimedia Commons

DNA (modified as part of image of cell)
commons.wikimedia.org/wiki/File:DNA_2_--_Smart-Servier.png
Laboratoires Servier, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons