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A myelin sheath wrapped around the axon of a neuron.
Neurons consist of three parts: a cell body, dendrites, and an axon. The dendrites are responsible for receiving stimuli from other nearby neurons. The stimulus is transferred down the dendrites into the cell body. From the cell body, the stimulus will travel down the axon, which is a long extension of the neuron.
Axons are surrounded by a myelin sheath, multi-layered covering made up of proteins and lipids; which are produced by Schwann cells. The myelin sheath acts as an insulator. Gaps within the myelin sheath are referred to as nodes of Ranvier. The impulse jumps from one node to the next very rapidly, which is one of the main advantages for an axon to myelinated.
Wiki User
∙ 13y ago
Anonymous
I think it’s nervous
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What carries messages to and from the brain?
Afferent nerves carry messages to and from the brain.
What are the nerves that carry messages?
Neurons
Which nerves carry messages from organs to brain?
Sensory nerves.
What important is done by the nerves?
carry messages to the brain
What do muscle nerves do?
muscle nerves carry messages from the brain to tell the muscle to contract.
What kinds of messages do your nerves ending carry do your nerve endings carry?
pain
What important work is done by nerves?
carry messages to the brain
What name refers to nerves that only originate in the brain carry messages to and from structures in the head and neck and are considered part of the peripheral nervous system?
Cranial nervesCranial Nerves only originate in the brain and carry messages to and from structures in the head and neck.
What are the nerves called that carry messages that cause movement?
Motor neurons.
What does galvanis experiment tell us about the way nerves carry messages to muscles?
Galvani\'s experimet tells us that nerves carry messages to the muscle through electrical impulses.
What sends messages to the body and helps your vital organs do their job?
Nerves
What name refers to nerves that only originate in the brain carry messages to and from structures in the head and neck and are considered part of the peripheral system?
Cranial nervesCranial Nerves only originate in the brain and carry messages to and from structures in the head and neck.
