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.
- 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
4. Iron content
5. Salt content
- 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.
- 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!
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