AQA GCSE Combined Science Trilogy · 8464
Specification 4.5.3.1 · Paper 2
Revise: Human Endocrine SystemAn endocrine gland produces hormones and secretes them directly into the bloodstream. Here, secretes means releases.
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GCSE Combined Science · key term
An organ that produces and secretes hormones directly into the bloodstream.
Used by AQA and Edexcel
Specification 4.5.3.1 · Paper 2
Revise: Human Endocrine SystemAn endocrine gland produces hormones and secretes them directly into the bloodstream. Here, secretes means releases.
Paper 1, Paper 2
A group of cells that produces and releases hormones directly into the bloodstream.
Revise: Hormones and Metabolic RateOne way they communicate is through hormones: chemical messengers produced by endocrine glands. A gland is a group of cells that produces and releases a substance. Endocrine glands release their hormones directly into the bloodstream.
When describing hormonal coordination, give the complete route: endocrine gland → hormone released into the blood → target organ → effect.
Explain why the pituitary is called a ‘master gland’: it releases hormones that stimulate other endocrine glands to release hormones.
For hormone transport, state that an endocrine gland releases the hormone into the bloodstream, which carries it to its target organ.
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