Endocrine System

This lesson covers:

  1. How the endocrine system works
  2. The roles of the main glands in the body
  3. How the endocrine system is different to the nervous system 

How the endocrine system works 


specific / sensory / bloodstream / hormones / receptors / motor


  1. Glands are organs that release small chemicals called .
  2. These chemicals are normally released into the , allowing them to travel around the body.
  3. They can then bind to cells that have the correct
  4. This will bring about some change within the cells.
hormones
bloodstream
specific
receptors

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Illustration showing three cells with different expressions representing hormone target cells.

True or false? A hormone can only stimulate specific types of cells.

True

False

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Different glands release different hormones.

True

False

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Which three of the following statements are true, regarding the the pituitary gland?

It releases multiple hormones 

It releases testosterone 

The hormones it releases control what other glands do

It's located in the neck

It's often referred to as the 'master gland'

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Which gland releases thyroxine? 

Thyroid

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What is the role of thyroxine? 

It causes puberty in males 

It regulates metabolism 

It stimulates the release of oestrogen 

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If the level of thyroxine in the blood is too , the pituitary gland will release more thyroid stimulating hormone (TSH). 

low

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What is the role of adrenaline? 

It causes puberty in females  

Stimulates fight or flight response (higher heart rate etc)

Increases sperm production

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Which organ is adrenaline released from? 

Ovaries 

Pituitary gland

Adrenal glands 

Pancreas 

Testes

Thyroid gland

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Which organ is insulin released from? 

Adrenal glands 

Thyroid gland

Testes

Pituitary gland

Pancreas 

Ovaries 

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Which of the following are classed as 'sex hormones', and stimulate puberty?

(Select all that apply)

Adrenaline 

Thyroxine 

Testosterone

Oestrogen

Thyroid stimulating hormone

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Which organ is testosterone released from? 

Pituitary gland

Ovaries 

Adrenal glands 

Thyroid gland

Pancreas 

Testes

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Do the effects of the endocrine system or the nervous system last longer?

Endocrine

Nervous

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