GCSE Biology (AQA)

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The Endocrine System

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Homeostasis and Response Hormonal Coordination in Humans

The Endocrine System

2:16 Human Endocrine System
Spec 4.5.3.1
Previous Hormones & Glands Next The Pituitary Gland
  • The endocrine system consists of glands that produce hormones.
  • Hormones are chemical messengers that travel in the blood.
  • Glands are located throughout the body.
  • The endocrine system shares similarities with the nervous system in allowing body parts to communicate.
  • The pituitary gland, located at the base of the brain inside the skull, is pea-sized and regulates other glands.
  • The thyroid gland, found in the neck, controls metabolism and growth.
  • The pancreas, situated in the upper abdomen, regulates blood glucose levels.
  • The adrenal glands, positioned on top of the kidneys, produce adrenaline to help the body respond to danger.
  • The ovaries, part of the female reproductive system, produce hormones estrogen and progesterone.
  • The testes, part of the male reproductive system, produce the hormone testosterone.

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