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What cell cell that myelinates and insulates axons within the CNS is the?
Wiki User
∙ 10y ago
Oligodendrocyte
Wiki User
∙ 10y ago
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What structure is responsible for myelination of the nerve fibers?
In the peripheral nervous system the cell that myelinates an axon is called a Schwann cell. In the central nervous system myelination is carried out by oligodendrocytes.
What part of the nerve are Axons and dendrites?
cell
Which of the following cell types insulates neurons in the PNS?
neurona;
What is an alternative term for an axon?
Dendrites: Unlike most axons, they receive signals from other neurons and pass the messages to the cell body of the neuron. Axons transmit impulses away from the cell body toward the axon endings/ terminals
What are the three types of neuron?
Functional types of neurons: 1. sensory (afferent) neurons - input to CNS from sensory receptors; dendrites located at receptors, axons in nerves, cell bodies in ganglia outside the CNS 2. motor (efferent) neurons - output from CNS to effectors cell bodies and dendrites located in the CNS, axons in nerves 3. interneurons - communicate and integrate information within the CNS; located entirely within the CNS
What is a substance of Schwann cell composed of lipoprotein that insulates axons and increases impulse speed?
Myelin
What kind of a coating do axons have?
Axons are coated in a fatty substance called myelin - a "myelin sheath". It insulates and protects the cell body of neurones. The myelin doesn't completely coat the axon: there are small gaps between the myelin, called the nodes of Ranvier.
How many axons can a single Schwann cell myelinate?
Unlike oligodendrocytes Schwann cells can only myelinate one axon. But the number of Schwann cells it takes to myelinate an axon depends on the axon length as a Schwann cell only myelinates one area between pairs of Nodes of Ranvier. Think of it like a string of sausage. the sting is the axon, each sausage is where a single Schwann cell myelinates that axon, as stated the length will determine the total number of Schwann cells needed for myelination, but a Schwann cell can only myelinate one axon.
What makes up white matter?
White matter is mainly composed of nerve fibers called axons, which are covered by a fatty substance called myelin. These axons form connections between different parts of the brain and spinal cord, allowing for communication between neurons. White matter is responsible for transmitting signals and coordinating communication within the nervous system.
What are Axons and dendrites are part of?
cell
What carries messages from the cell body of a neuron?
Remember: Axons away, so dendrites carry messages from the cell, and axons carry them away.
What structure is responsible for myelination of the nerve fibers?
In the peripheral nervous system the cell that myelinates an axon is called a Schwann cell. In the central nervous system myelination is carried out by oligodendrocytes.
What part of the nerve are Axons and dendrites?
cell
Axons and Dendrites are part of what kind of cell?
Neurons, of the nervous system. The dendrites receive impulses, and the axons send them to another neuron or an effector cell.
Do Axons carries impulses toward the nerve cell body?
No, axons carry impulses away from the nerve cell body.
Which best describes the components of a nerve?
axons, blood vessels, connective tissue, Schwann cell.
Which bestdescribes thecomponents ofa nerve?
axons, blood vessels, connective tissue, Schwann cell.
