Nervous system
Nervous system Nervous cells, also known as nerves, form the nervous system: in the human body, there are billions of nerves in the body, and the nerve cell consists of the cell body, and many appendages, and among these appendages are the so-called tree appendages, which act as antennas; It receives signals from nerves and others to transmit them to the cell body, and then to the axon, which may be up to a meter long. It is worth noting that the nervous system enables a person to communicate with the external environment, in addition to controlling many of the body’s functions and metabolic processes, and the brain can control the body’s reactions to pain and touching hot materials and others, by receiving the sensation, then processing it and sending the reaction through the nerves, for example, Lift the hand from the hot object as soon as it touches it.
nervous system functions
Brain functions The brain has many functions, and they can be mentioned depending on the specific part of the brain as follows:
Cerebral cortex This part of the brain controls language, perception, justification, thinking, and voluntary movements. The cerebellum (in English) and this part can control the maintenance of the body's posture, balance, and movement. The Hypothalamus The hypothalamus is characterized by its ability to control the circadian rhythm and feelings, body temperature, hunger, and thirst.
The medulla oblongata is essential for life; It controls breathing, heart rate, and blood pressure.
The thalamus integrates sensory and motor information.
The zoster system works with other parts of the nervous system to control emotional response responses.
Basal ganglia The basal ganglia work to maintain the body's balance and movement.
The midbrain The midbrain consists of sites that can controlcontrol general can controlgeneral body movement, eye movement, hearing, and vision.
What is the mechanism of action of the nervous system?
The nerves "run" non-stop and have different directions, for example, when you touch a hot plate, some nerves send information from your fingers to the brain (central nervous system) to perceive the sensation of heat. When your brain receives that information, it issues a command to drag the finger. Other nerves carry this message to the hand muscle.
Maintaining a healthy nervous system
It is possible to maintain the health of the nervous system and prevent diseases that may affect it by following some tips, including the following:
Do regular exercise, refrain from smoking, alcohol, and drugs, and get enough rest. Control of diseases such as diabetes and stress. Eat a balanced diet that is low in fat and rich in vegetables, fruits, whole grains, folic acid, vitamin B6, and vitamin B12. Drink plenty of water. Make sure to learn new skills to increase attention span and ability to focus. Reducing the use of over-the-counter medications. Try to avoid hitting and falling
تعليقات
إرسال تعليق