Negative Feedback (OCR GCSE Biology A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is negative feedback?
What is negative feedback?
When a factor changes, the body returns it to its original level
What does thyroxine regulate?
What does thyroxine regulate?
Metabolic rate
Which gland releases thyroxine?
Which gland releases thyroxine?
Thyroid gland
What stimulates the release of thyroxine?
What stimulates the release of thyroxine?
Thyroid stimulating hormone
Where are increased thyroxine levels detected?
Where are increased thyroxine levels detected?
Receptors in the brain
Which glands release adrenaline?
Which glands release adrenaline?
Adrenal glands
What response does adrenaline stimulate?
What response does adrenaline stimulate?
'Fight or flight' response
What effect does adrenaline have on heart rate?
What effect does adrenaline have on heart rate?
Increases heart rate
What happens to glycogen in the liver when adrenaline is released?
What happens to glycogen in the liver when adrenaline is released?
Converted to glucose
What happens to pupils when adrenaline is released?
What happens to pupils when adrenaline is released?
Pupils dilate