Which of the given statements about nervous tissue are correct? (i) Nervous tissues are made up of neurons. (ii) Neurons have one axon and many dendrites. (iii) Nerve impulses are signals that pass through a nerve fibre.
(i), (ii) & (iii)
Nervous tissue is built from specialised cells called neurons, so statement (i) is correct. A typical neuron has a cell body with many short branched dendrites that receive signals and one long axon that carries the impulse away, so statement (ii) is also correct. The electrical signals that travel along a nerve fibre are called nerve impulses, which makes statement (iii) correct as well.
All three statements describe the standard textbook picture of nervous tissue, so no statement can be excluded. The three-statement combination is the only option that keeps every correct statement.
Hence, the answer is (i), (ii) & (iii).
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