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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.


How are axons and dendrites alike?

Axons and dendrites are both extensions of a neuron. They are involved in transmitting electrical signals within the nervous system. Axons carry signals away from the cell body, while dendrites receive signals from other neurons.


How do dendrites and axons work together in transmitting signals within the nervous system?

Dendrites receive signals from other neurons and transmit them to the cell body, while axons carry signals away from the cell body to other neurons or muscles. Together, dendrites and axons help transmit electrical signals within the nervous system, allowing for communication between different parts of the body.


What is a substance of Schwann cell composed of lipoprotein that insulates axons and increases impulse speed?

The substance is called myelin, and it is composed of lipoprotein layers that wrap around axons. Myelin insulation helps to increase the speed of neural impulses by allowing them to "jump" between nodes of Ranvier along the axon. This process is known as saltatory conduction.


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 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 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 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.


Where does the axons carry messages toward?

Axons carry messages (action potentials) away from the cell body to other neurons, muscles, or glands. They transmit information from one neuron to another, enabling communication within the nervous system.