Documents Option H: H.1 – Hormonal Control. Hormones Chemical messenger secreted directly into the...

Hormonal Control and the Endocrine System Option H: H.1 â Hormonal Control 1 Hormones Chemical messenger secreted directly into the bloodstream Secreted by endocrine cells…

Documents Option H: H.1 – Hormonal Control

Hormonal Control and the Endocrine System Option H: H.1 â Hormonal Control 1 Hormones Chemical messenger secreted directly into the bloodstream Secreted by endocrine cells…