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What is the white matter of the spinal cord contain?
axons
What is the different between white matter and grey matter?
grey matter- the centre area of the spinal cord that contains cell bodies, their axons and their dendrites. white matter- the outer layer of the spinal cord that contains only myelin coated axons.
Gray matter in the spinal cord is mostly?
unmyelinated axons.
The portion of the spinal cord made up of myelinated axons?
White Matter
Where are neurosomas of the anterior root located?
Neurosomas of the anterior root are located within the grey matter of the spinal cord. They consist of cell bodies of motor neurons that project their axons out of the spinal cord to innervate muscles and glands.
What is the portion of the spinal cord made up of cell bodies and unmyelinated axons?
Gray matter
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.
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.
Is short preganglionic axons parasympathetic or sympathetic?
Short preganglionic axons are characteristic of the sympathetic nervous system. In the sympathetic division, these axons originate in the spinal cord and project to nearby ganglia, which are typically located close to the spinal cord. In contrast, the parasympathetic nervous system features long preganglionic axons that extend from the brainstem or sacral spinal cord to ganglia located near or within target organs.
Is white matter dense in myelinated axons?
Yes, white matter is dense in myelinated axons. White matter in the brain and spinal cord is primarily composed of nerve fibers that are encased in myelin sheaths, which give it its white color. Myelination helps to speed up the transmission of nerve impulses along these axons.
Are neurosomas of the anterior root located in the gray matter?
Yes, neurosomas of the anterior root are located in the gray matter of the spinal cord. The gray matter contains cell bodies, dendrites, and unmyelinated axons, whereas the white matter consists mostly of myelinated axons.
Area of spinal cord that contains nerve fibers surrounded by myelin sheath?
the part of the spinal cord that contains mylinated axons is the White matter portion.
