GCSE Biology OCR B J257

B5.3: How do hormones control responses in the human body?

#B5.3.1

describe the principles of hormonal coordination and control by the human endocrine system

#B5.3.2

explain the roles of thyroxine and adrenaline in the body, including thyroxine as an example of a negative feedback system

B5.2
How does the nervous system help us respond to changes?
B5.4
Why do we need to maintain a constant internal environment?
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