How do nerves control every organ and function in the body? How do trees give earth all its oxygen?
How does the outer layer of skin cells on my finger detect when I am touching an object?

The body uses electrical signals sent along nerves to control many functions because electrical signals can travel very quickly. At the end of each nerve's axon terminals the electrical signals are converted to chemical signals which then trigger the appropriate response in the target tissue.The outer layer of skin cells on your finger does not detect anything.  Physical sensations that are experienced when touching an object are detected by special receptors that sit in lower layers of the skin. Such sensations include pressure, temperature, vibration, and skin stretching.

Explanation:

Explanation:

The body uses electrical signals sent along nerves to control many functions because electrical signals can travel very quickly. At the end of each nerve's axon terminals the electrical signals are converted to chemical signals which then trigger the appropriate response in the target tissue

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explanation: