AQA GCSE Combined Science Trilogy · 8464
Specification 4.5.3.6 · Paper 2
Revise: Feedback SystemsAdrenaline prepares the body to react to a threat, whereas thyroxine helps regulate the body's everyday chemical activity.
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GCSE Combined Science · key term
A hormone released by the adrenal glands during fear or stress that increases heart rate and the delivery of oxygen and glucose to the brain and muscles.
Used by AQA
Specification 4.5.3.6 · Paper 2
Revise: Feedback SystemsAdrenaline prepares the body to react to a threat, whereas thyroxine helps regulate the body's everyday chemical activity.
Link adrenaline to increased delivery of both oxygen and glucose, then explain that these allow respiration to release energy for muscle contraction.
Distinguish the glands: adrenal glands release adrenaline; the thyroid gland releases thyroxine; the pituitary gland releases TSH.
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