Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.




Nervous Mechanism

Hormonal Mechanism

1. Involves the nervous system 

1. Involves the endocrine system 

2. Includes the brain, spinal cord and nerves

2. Includes glands and hormones

3. The impulses brought about by nerves don’t have a specific action

 I.e, the nerves can carry out transmission of information to and from different parts of the body and brain.

3. The hormones have a specific function

I.e, each hormone performs only a set of functions

Eg: insulin regulates metabolism of blood sugar

Thyroxine regulates overall metabolism and proper growth 

4. Nerve impulses reach only a limited number of tissues in the body.

4. Chemical signals reach all the cells 

5. It is relatively slow 

5. It is relatively fast


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