These are required for the impulse to transfer from presynaptic to post-synaptic neuron:
Correct answer: C. Calcium
- A. Sodium
- B. Potassium
- C. Calcium
- D. Proteins
Explanation
Calcium ions cause the vesicles containing neurotransmitters to fuse with the axon terminals and release the neurotransmitter into the synaptic cleft. The neurotransmitters bind to the receptors on the postsynaptic membrane, which generate an action potential in the postsynaptic cell. Hence, option C is correct.
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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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