Saturday 23 February 2013

2.83 describe how responses can be controlled by nervous or by hormonal communication and understand the differences between the two systems

The nervous system and hormones both coordinate responses with in the body. The nervous does this by electrical impulses so it is very fast. Hormones do this with chemicals which travel, a little slower, at the speed of the blood stream they are travelling in.

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    2. Who's the one which wears the helmet when he skates?

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  2. Nervous system :response short lived and it has a very localised effect, Endocrine system: longer lasting response and has widespread effects

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  3. oright sound sam chill smarty fukin pants dont need u acting big on every answer

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  4. The Biology Syllabus has changed.... New Syllabus Blog:

    http://igcse-biology-2017.blogspot.hk

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  5. more at

    http://igcse-biology-notes.blogspot.hk/2017/06/283-describe-how-responses-can-be.html

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