Question

how do nerves carry messages between different parts of the body?
they send electrical signals.
they exchange gases with cells.
they deliver nutrients to organs.

Explanation:

To determine how nerves carry messages, we analyze each option:

• Nerves transmit information via electrical signals (action potentials) along neurons.
• Exchanging gases with cells is a function of the respiratory system (e.g., lungs and blood), not nerves.
• Delivering nutrients to organs is a role of the circulatory system (blood vessels), not nerves.

So the correct option is the one stating nerves send electrical signals.

Answer:

They send electrical signals.