The spinal cord It is produced from the major neural work of vertebrates and descends from the lower part of the brain to the lower part of the… the spinal column. This region is formed by all the nerve fibers that direct reflex action and impulses to and from the brain.
When you look at the spinal cord cross section It is almost similar to butterscotch with a butterfly straight down the middle. The gray matter in the middle of the brain. core It forms the dendrites and bodies of neurons that form the bundle. It is surrounded by neuroaxons or white matter.
The crisscrossing section of the spinal cord.
Looking at a cross section of the spinal cord You see a grayish substance in the shape of a butterfly surrounded by white matter. It’s a grayish substance. the core And this gives rise to four projections, commonly called Hoorns. Behind them are two back horns and behind them are two ventral horns. The gray matter seen here is composed of the interior, neurons, and glial cells – part of the central nervous system. To learn more, click here. for cross sections of spinal cord at 8 different levels.
For a better demonstration the spinal cord cross section Then watch the following videos
1. white fabric
In white fabric, nerve fibers run the entire length of the body. the cord They are called axons. This allows the different parts of the CZ to communicate with each other. Each Axone bundle is a large path and transmits specific information. The paths that run are responsible for transmitting signals to the brain, and the paths that run send signals from the brain to neurons throughout the trunk.
2. gray matter
The cerebral fluid is located in the center of the gray matter. Certain horns in the gray matter are responsible for different baggage. Each horn contains a different function. The dorsal and ventral horns contain neurons that control skeletal muscle. The transverse horn contains cells that act on smooth muscle and feed the heart.
3. know its footprints to assist precedents about spinal cord crossings
- How do you distinguish between the dorsal and ventral lobes?
The gray fabric of the dorsal horn is thinner than the gray fabric of the ventral horn. You can cut the dorsal carrot the cross section away from the horn area. The ventral root looks like a stripe of axons against the white preparation.
- Which two things determine the distribution of white matter at a given level of the spinal cord?
The number of ganglion cells that are considered peripheral and send axons in the brain and the number of neurons in the brain that project to a particular room. spinal level.
Structure and function of the spinal cord.
You may be very surprised if you actually ask what the spinal cord In the adult state, it is about 17 1/4 inches long, as wide as the index finger, and as graceful as the grass you drink for a reason.
It is protected by three layers of membranes surrounding the meninges. The nerve chain is closed, like an unstable rope with a hot dog around it. The nerve bundle contains a pillow of cerebrospinal fluid between the nerve bundle and the meninges.
The end of the spinal cord Cauda equina is so called because it looks like the rear of a horse with a cascade of nerves.
Structure
It emerges from a large hole in the lower part of the skull. the spinal cord It is covered by a spine that supports it. The spinal The nerves come from a paired location from the place between the arches of the horse. They are named after the areas of the spine from where they come. These areas include
- Neck or neck
- Chest
- Lumbar or abdomen
- Sacrum or pelvis
- Bone or tailbone
Interesting enough, the spinal cord There are places occupied within 2/3 of the spine. And this is due to the fact that the spinal column increases faster the spinal cord do,thus the cord takes up less space as the person stands up. In this case, the spinal cord only by the time someone matures, the spinal cord has extended to the first lumbar vertebra.
What is the spinal cord responsible for?
Basically the spinal cord is responsible for:
- The electrical connections between the body and the different parts of the brain. The spinal cord It passes through many different configurations. the cord .
- Also known as propagation. We take the nonadaptive action of walking as a subaction, but it is actually a series of commands sent to a group of legs to tell them when they must take off and when they must roll. The signals are sent to neurons. Neurons function by sending signals to the legs to contract or expand. The movement continues repeatedly, thus forming the action of walking.
- Reflexes are involuntary brain-to-brain responses. the spinal cord to the nerves that form the peripheral nervous system.
Here is a video that explains it clearly the spinal cord :
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