GCSE Science Biology Notes - Hormones

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Hormones

Hormone: chemical messengers transported in blood to target cells.

They are carried in the blood plasma, to particular parts of the body but only affect target cells.

Hormones are produced by glands and have long lasting effects.

Comparison of Hormones with Nerve Action

Nervous

Hormone

Fast acting

Slow acting

Short lived

Long lived

Electrical

Chemical

Glands, Hormones and Functions

Gland

Hormone

Function

Pinea...

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