A2 Biology - Endocrine system and hormone types (OCR A Chapter 14.1)

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The endocrine system is responsible for hormonal communication. It is made up of endocrine glands that secrete hormones into the bloodstream to signal target cells to do various functions of homeostasis. This videos focuses on the two main types of hormones and how they affect target cells.

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Close my mouth by Silent Partner
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Please now continue. Don't stop now from uploading new videos. Your videos are awesome . We can revise here from your playlist several chapters with all concepts in a couple of hours. Please continue from now onward.

doctor_channel
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Happy new year!! Thanks for the videos!!

carmenr
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happy new year!! thank you for always uploading awesome content 🥰🥰

carrdinall
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thank you for the new vids on chapter 14!

iysha