ANATOMY

Detailed explanation-1: -So, the correct answer is ‘Dendrite → cell body → axon’.

Detailed explanation-2: -First, nerves carry messages from our sensory organs and others to the central nervous system, consisting of the brain and spinal cord. Second, nerves carry messages from the central nervous system to muscles and other organs. Third, nerves transmit and process signals within the central nervous system.

Detailed explanation-3: -The correct order of involvement of the given parts of neuron in electrical impulse is Dendrites → Cell body → Axon → Axon terminal → Synaptic Knob.

Detailed explanation-4: -An action potential propagates along the cell membrane of an axon until it reaches the terminal button. Once the terminal button is depolarized, it releases a neurotransmitter into the synaptic cleft.

Detailed explanation-5: -A neuron sending a signal (i.e., a presynaptic neuron) releases a chemical called a neurotransmitter, which binds to a receptor on the surface of the receiving (i.e., postsynaptic) neuron. Neurotransmitters are released from presynaptic terminals, which may branch to communicate with several postsynaptic neurons.