Which type of nerve impulse occurs in non-myelinated neuron fibres?

Explanation

Option B is correct. The type of nerve impulse that occurs in non-myelinated neuron fibers is a continuous impulse. A continuous impulse is a type of nerve impulse that travels down the axon of a neuron without jumping. This is in contrast to a saltatory impulse, which is a type of nerve impulse that jumps from node to node along the axon of a myelinated neuron. Myelinated neurons are neurons that have a myelin sheath, which is a fatty substance that insulates the axon. The myelin sheath helps to speed up the transmission of nerve impulses by allowing them to jump from node to node. Non-myelinated neurons do not have a myelin sheath, so nerve impulses travel down the axon continuously. This means that nerve impulses travel more slowly in non-myelinated neurons than in myelinated neurons. Saltatory impulse: A type of nerve impulse that jumps from node to node along the axon of a myelinated neuron. Rapid impulse: A type of nerve impulse that travels quickly. Jumping impulse: A type of nerve impulse that jumps from node to node along the axon of a myelinated neuron.