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The tracts of myelinated axons in the central nervous system (CNS) consist of bundles of nerve fibers surrounded by myelin sheaths. These tracts serve as pathways for transmitting electrical impulses between different areas of the CNS, allowing for communication and coordination of functions within the body. The myelin sheath, made up of specialized cells called oligodendrocytes in the CNS, helps to increase the speed and efficiency of nerve impulse transmission along the axons.
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Are axons most located and protected within the CNS?
axons
What contains myelinated axons?
Myelinated axons are found in the central nervous system (CNS) within areas such as the brain and spinal cord, as well as in the peripheral nervous system (PNS) within nerves outside the CNS. Myelin, a fatty substance produced by glial cells like oligodendrocytes in the CNS and Schwann cells in the PNS, wraps around these axons to insulate and speed up the transmission of nerve impulses.
Does saltatory conduction only occur in CNS?
Saltory conduction only occurs in the myelinated axons.
Groups of axons and dendrites in the PNS are called?
A group of axons in the CNS is most likely referring to the tracts of neurons that are found in the spinal cord.
What are axons that conduct impulses from the cerebrum to lower parts of the CNS?
Axons that conduct impulses from the cerebrum to lower parts of the central nervous system (CNS) are called descending axons. These axons transmit motor commands and information from the brain down to the spinal cord and other lower regions of the CNS. They play a crucial role in controlling voluntary movement and coordinating various bodily functions.
Myelinated regions of the CNS are referred to as?
White matter in the CNS is predominantly composed of myelinated axons.
Are axons most located and protected within the CNS?
axons
What contains myelinated axons?
Myelinated axons are found in the central nervous system (CNS) within areas such as the brain and spinal cord, as well as in the peripheral nervous system (PNS) within nerves outside the CNS. Myelin, a fatty substance produced by glial cells like oligodendrocytes in the CNS and Schwann cells in the PNS, wraps around these axons to insulate and speed up the transmission of nerve impulses.
Does saltatory conduction only occur in CNS?
Saltory conduction only occurs in the myelinated axons.
Does myelinated axons of the cns make up the white matter of the brain and spinal cord?
Yes, myelinated axons in the central nervous system (CNS) constitute the white matter of the brain and spinal cord. The myelin sheath, which is a fatty substance, surrounds these axons and increases the speed of nerve signal transmission. In contrast, the gray matter primarily consists of neuronal cell bodies, dendrites, and unmyelinated axons. Thus, the distinction between white and gray matter is largely based on the presence of myelinated versus unmyelinated axons.
Groups of axons and dendrites in the PNS are called?
A group of axons in the CNS is most likely referring to the tracts of neurons that are found in the spinal cord.
What is the bundle of axons called in the CNS?
Axons and dendrites that go to or from the same region of the body travel together in bundles, somewhat like telephone cables. A nerve is a bundle of axons and/or dendrites in the PNS. A bundle of axons and/or dendrites in the CNS is called a tract.for more info see link below
What are axons that conduct impulses from the cerebrum to lower parts of the CNS?
Axons that conduct impulses from the cerebrum to lower parts of the central nervous system (CNS) are called descending axons. These axons transmit motor commands and information from the brain down to the spinal cord and other lower regions of the CNS. They play a crucial role in controlling voluntary movement and coordinating various bodily functions.
Difference between optic tract and optic nerve?
Bundles of neuron processes are called tracts in the cns and nerves in the pns
Are nerves more myelinated or unmyelinated in the CNS?
Nope. They can be found in the PNS as well. The myelinated ones in the CNS are made my Schwann cells. And the ones made in the PNS are made by oligodendrocytes.
How do you create myelenated neurons?
You don't, but glial cells, (oligodendrocytes in the CNS, and Schwann cells in the PNS), wrapped one after another around the axons of neurons with gaps between them called the nodes of Ravnier do create myelinated neurons.
What is mostly located and protected within the CNS?
axons
