Biology ~ Homeostasis

Homoeostasis – The body’s automatic control system. A thrilling subject, I know. I had a test on this topic yesterday and it dawned on me how little I actually know about it. So, if you’re just looking for some revision or are having a biology meltdown, delve into this post and learn something new.

What

  • An automatic control system involving nerves and hormones.
  • Maintaining a stable format within your body (keeping things balanced).
  • It happens because the conditions inside your body need to stay consistent, even if external things change.
  • Without it, your body wouldn’t be able to function.

 

Your body needs to balance:

1. Water levels
2. Glucose (sugar) levels
3. Temperature
4. Iron content
5. Salt content

 

Hormones

  • Chemical messengers that travel around the body in the bloodstream.
  • They have a slower response than the nervous system.
  • Hormones are produced by your glands.

 

Nerves

  • Sensors that send impulses to either the brain or the spinal chord.
  • Receptors detect stimuli (changes).
  • Effectors produce a response to the stimuli (changes).
  • Variables are factors that can be changed by the effector.
  • The coordination centre receives the information from the nerves and chooses a response – The brain, spinal chord or pancreas.

 

Hopefully this has taught you something and made the subject easier to get your head around – it certainly helped me!
Don’t forget to like and share. Please feel free to comment down below or get in touch with me. Check out the rest of my blog and follow my Instagram if you’re not already.

Thanks.

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