Acetylcholine and noradrenaline are two types of _ used in our nervous system.
Correct answer: C. Neurotransmitters
- A. Enzymes
- B. Channel and carrier proteins in the cell membrane of a neuron
- C. Neurotransmitters
- D. Hormones
Explanation
Factual recall: Both of these substances are neurotransmitters and not any of the things mentioned in the other options.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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