axons are wrapped in a fatty substance called?
319223
They produce a fatty substance called myelin, which is wrapped around axons as a layer of insulation. Similar in function to insulation layers around power cables, the myelin sheath allows electrical messages to travel faster, and gives white matter its name—the white is the myelin wrapped around axons.
389271
Under a microscope, fat cells look like bulbous little spheres. Like other cells in the body, each has a cell membrane and a nucleus, but their bulk is made up of droplets of stored triglycerides, each of which consists of three fatty-acid molecules attached to a single glycerol molecule.
788689
At the end of an axon, there is a so-called axon terminal that is button-like and is responsible for providing synapse between neurons. The axon terminal contains specialized chemicals called neurotransmitters that are initially contained inside the synaptic vesicles.
426849
Axon, also called nerve fibre, portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells. Some axons may be quite long, reaching, for example, from the spinal cord down to a toe.
1231839
There are many dendrites in a nerve cell and are short in length; while there is only one axon per neuron or nerve cell, but their length is long. Branches of dendrites are spread all over, just like the branches of a tree, whereas axons are branched at the end side known as axons collateral.
1116984
It is composed of neurons, also known as nerve cells, which receive and transmit impulses, and neuroglia, also known as glial cells or glia, which assist the propagation of the nerve impulse as well as provide nutrients to the neurons. Nervous tissue is made up of different types of neurons, all of which have an axon.
297943
Axon and Dendrites are the two important parts of nerve cells involved in the conduction of nerve impulses. Dendrites are the branched projections from the neurons. Axon, better called as nerve fibres, are also cytoplasmic projections from the neurons.
699058
1. medullated nerve fiber - a nerve fiber encased in a sheath of myelin. myelinated nerve fiber. nerve fiber, nerve fibre - a threadlike extension of a nerve cell. medullary sheath, myelin sheath - a layer of myelin encasing (and insulating) the axons of medullated nerve fibers.
967421
Axon and Dendrites are the two important parts of nerve cells involved in the conduction of nerve impulses. Dendrites are the branched projections from the neurons. ... Unlike dendrites, the axons are long and un-branched and they carry the nerve impulse away from the nerve cells.
261990
Axon terminals. End of axon and beginning of junction with other cells where messages are transferred cia chemicals called neurotransmitters—- transfers to dendrite.
1119186
A nerve cell (neuron) is, of course, just one cell. A nerve is a bundle of axons (nerve fibers) from many neurons, wrapped up in multiple layers of connective tissue and containing blood vessels as well. Nerves do not contain the cell bodies or dendrites of neurons—just their axons.
361293
A neuron has a cell body, which includes the cell nucleus, and special extensions called axons (pronounced AK-sonz) and dendrites (pronounced DEN-drahytz). Bundles of axons, called nerves, are found throughout the body. Axons and dendrites allow neurons to communicate, even across long distances.
128652
The axons are bundled together into groups called fascicles. Each fascicle is wrapped in a layer of connective tissue called the perineurium.
92271
Neuron. The functional unit of the nervous system is the neuron, a cell specialized to receive and transmit impulses. ... The axons of the peripheral nerves are enclosed in a fatty (myelin) sheath formed from specialized cells called Schwann cells.
814448
Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.
284622
A nerve contains bundles of nerve fibers, either axons or dendrites, surrounded by connective tissue. Sensory nerves contain only afferent fibers, long dendrites of sensory neurons. Motor nerves have only efferent fibers, long axons of motor neurons.
1088986
Axons transmit information from the neuron on to other neurons to which it is interconnected. To speed up the transmission of electrical signals along the axon, many axons are covered in a myelin sheath. Dendrites receive information transmitted by the axons of other neurons.