Endocrine system

Definition

The collection of hormone-producing glands that coordinates and controls processes in the body.

Used by AQA, Edexcel and OCR

Specification 4.5.3.1 · Paper 2

A system of glands that release hormones directly into the bloodstream to coordinate body processes.
One way it does this is through the endocrine system: a group of glands that secrete chemical messengers called hormones directly into the bloodstream. The blood carries a hormone around the body to a target organ, where it produces an effect. Although the hormone circulates widely, only cells able to respond to that particular hormone act on its message.
Revise: Endocrine System

Specification 7.1 · Paper 2

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The collection of glands and hormone-producing tissues that coordinates processes in the body using chemical messengers.

The endocrine system provides one form of communication. Its endocrine glands produce chemical messengers called hormones.

Specification B3.2a · Paper 1 (Foundation), Paper 3 (Higher)

The endocrine system provides this coordination using hormones. It is made up of hormone-producing glands located in different parts of the body. Hormones help regulate many processes, including growth, metabolism, blood glucose concentration and reproduction.
Revise: Hormonal coordination

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

The system of glands that secretes hormones into the blood to coordinate and control responses in the body.
The endocrine system coordinates many responses to these changes using chemical messengers called hormones.
Revise: Hormonal Coordination