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Chemicals released to carry a signal across a synapse are called
Ahormones in blood
Bdigestive enzymes
Cneurotransmitters
Dplasma antibodies
Answer & Solution
Correct answer: C. neurotransmitters
1. A signal travelling down an axon reaches a synapse or a neuro muscular junction.
2. It cannot jump the gap electrically at a chemical synapse.
3. Chemicals called neurotransmitters carry the signal across instead.
4. Hormones also act chemically but travel in blood to distant targets, not across a synapse.
5. That distinction, local versus circulating, is what separates neural from endocrine control.
_Source: NCERT Class 11 Biology Ch18 'Neural Control and Coordination', section 18.3_
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