Oligodendrocyte
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.
cell
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.
neurona;
The partner of dendrite in the brain is the axon. Dendrites receive signals from other neurons and transmit them to the cell body, while axons transmit signals away from the cell body to other neurons. Together, dendrites and axons play a crucial role in communication within the nervous system.
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.
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.
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.
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.
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.
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.
cell
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.
Remember: Axons away, so dendrites carry messages from the cell, and axons carry them away.
cell
Neurons, of the nervous system. The dendrites receive impulses, and the axons send them to another neuron or an effector cell.
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.