Spinal cord: structure and functions

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2018-03-27 16:36:08

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Spinal cord human body performs important functions. Spinal cord, structure and functions of the authority have been long hidden from the doctors, because most of all protect it from external influences. It is located in the spinal canal, somewhat flattened. The length of the spinal cord – up to forty five centimeters, the thickness of it – about one centimeter. It has a groove that divides the brain into two halves. Inside the spinal cord contains a cavity in which there is spinal fluid. In connection with the functions performed it is covered with shells-the outer, middle and inner. The outer shell primarily serves to protect the spinal cord from damage, and the other two contain nerves and blood vessels.

The spinal cord Starts from the medulla part of the brain and ends in the lumbar. The number of vertebrae is divided into segments. Them in humans, there are thirty-one. Each segment has a roots – two in front and two behind. Front spine connected to the rear spine, forming a mixed nerve. There are fiber.

The Spinal cord, its structure, interesting to study in the plane. If we consider it in the context, it can be seen in the Central canal gray matter shaped like a butterfly. This cluster of nerve cells. It is surrounded by a white substance constituting the conductive path, and they connect segments of the brain together. The conductive path can be divided into two types – ascending, which pass to the brain signals arousal, and descending – those who conduct the response from the brain to the organs.

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The Spinal cord, structure and functions of which were not known earlier, now studied and presents no difficulties. Functions of the spinal cord are divided into two broad categories. The first is a reflex, and the second-conductive. The essence of reflex functions is that it accumulates all reflex arcs, thereby controlling both the autonomic and somatic functions of the body. A certain segment of the spinal cord activates the area of the skin or muscle as a striking example can be motor reflexes. For example, when you hit something on the knee there is a reflex to the sharp extension of the patella. In addition, the spinal cord controls reflexes such as sweating, dilated pupils, mobility of the diaphragm. Receive information and transfer it spinal cord is simply mind-boggling – the signal is transmitted at a speed of from sixty to one hundred twenty meters per second (in different types of fibers different). This speed is necessary in order for the human reaction to the stimuli was as fast as possible. Thus, the body protects itself. And the sacral division is responsible for the urogenital system – there is the centre for regulation of defecation, urination, sexual function.

The Essence of the conductor function is to conduct impulses to the brain, and then after the data processing – back to the parts of the human body.

Spinal cord structure and functions of the body are very sensitive to external influences. Despite the fact that the spinal cord is safely tucked away from damage in the bones of the spine, he still suffers the impact from the side. So, from an early age the child should be taught to proper planting, adequate physical activity, physical education classes. Very severe injuries of the spinal cord – they can permanently deprive people of the opportunity to move and many other functions. Studying spinal cord structure and function, doctors only slightly advanced in the field of rehabilitation. As a rule, it takes it very long without the full restoration of functions. It is therefore very important to take care of their health and be aware of the fact that the spinal cord, structure and functions of this body unique. Our task-to protect it.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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