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's often referred to as the 'master gland'

It's located in the neck

The hormones it releases control what other glands do

It releases testosterone 

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Which gland releases thyroxine? 

Thyroid

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What is the role of thyroxine? 

It regulates metabolism 

It causes puberty in males 

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  

Increases sperm production

Stimulates fight or flight response (higher heart rate etc)

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Which organ is adrenaline released from? 

Testes

Pituitary gland

Ovaries 

Adrenal glands 

Pancreas 

Thyroid gland

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Which organ is insulin released from? 

Testes

Thyroid gland

Adrenal glands 

Ovaries 

Pancreas 

Pituitary gland

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

(Select all that apply)

Testosterone

Adrenaline 

Thyroid stimulating hormone

Thyroxine 

Oestrogen

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Which organ is testosterone released from? 

Thyroid gland

Pituitary gland

Pancreas 

Testes

Ovaries 

Adrenal glands 

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

Endocrine

Nervous

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