The primary purpose of the myelin sheath is to a. insulate the neuron so it can transmit information more efficiently b. receive messages from outside the neuron and carry them to the cell nucleus c. provide a place for neural respiration and cell metabolism to occur d. provide a soft covering to hold axons in place

The myelin sheath is an extended and modified plasma membrane that is spirally wrapped around the axon of the neuron. The primary purpose of the myelin sheath is to a. insulate the neuron so it can transmit information more efficiently and quickly. A myelinated neuron can transmit the electrical impulses at the speed of 400 Km/h whereas the speed is just 4 Km/h in a non-myelinated or a damaged neuron.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.