The Nervous System In 9 Minutes

The Great and Powerful

nervous

system

or the brain as most of us call it, what makes this organ unique is that within it lies the ability of humans to know themselves. This characteristic distinguishes and distinguishes the human species from the rest of creation. This ability is known. As consciousness or intelligence to start, let's look at the main function of the

nervous

system

, the basic purpose is to coordinate all the activities of the body, it allows the body to respond and adapt to changes that occur both inside and outside the body, now the nervous system . The system is actually divided into two parts: the central nervous system and the peripheral nervous system.

We'll explore the peripheral later, but first let's look at the central nervous system. The central nervous system is made up of two main structures: the brain and the spinal cord. As most people know, the brain is located inside the skull and there are six main sections, among other structures within it, these six sections are the cerebrum, the cerebellum, the midbrain pools and the medulla oblongata, the first section It is the brain, this is the largest section. It is divided into two main hemispheres, which are the right and left hemispheres, and the brain is further divided into four loes.

These four loes are the frontal, the parietal, the temporal, and the occipital. The frontal lobe is mainly responsible for reasoning and thinking. The parl is the main responsible for integrating sensory information, the temporal is the main responsible for processing auditory information from the ears and the occipital is mainly responsible for processing visual information from the eyes the second section of the brain is the cerebellum, this is the The section located at the back of the head below the brain and above the first cervical of the neck is responsible for muscle coordination, balance, posture and muscle tone.

Dian sephylon section is located between the brain in the midbrain. Containing two structures, the thalamus and the hypothalamus, the thalamus behaves much like a relay station. and directs sensory impulses to the brain and the hypothalamus controls and regulates the functions of the autonomic nervous system, such as temperature, appetite, water balance, sleep, and the constriction and dilation of blood vessels. The hypothalamus also plays a role in emotions such as anger, fear, pleasure, pain, and desertion. The section of the midbrain. It is located below the brain in the upper part of the brain stem it is responsible for certain ocular and auditory reflexes the pawns are located below the midbrain and in the brain stem it is responsible for certain reflex actions such as chewing, tasting and producing saliva and the last The section is the medulla oblongata, it is the lowest part of the brain stem and connects to the spinal cord and is responsible for regulating the function of the heart and blood vessels, digestion, breathing, swallowing, coughing, sneezing and blood pressure.

It is also known as the breathing center. Now that we have covered the brain, let's look at the other half of the central nervous system, the spinal cord. The spinal cord is the link between the brain, nerves and the rest of the body. , the spinal cord is divided into four different regions, the cervical The lumbar thoracic and the apparent and efferent spinal nerves which fuse to form the peripheral nerves, the apparent spinal nerves are responsible for transporting information from the body to the brain and spinal nerves Efferents are responsible for transporting information from the brain to the body now inside it.

Elaborate system of nerves, neurons and dendrites. There is a system that regulates functions of the central nervous system that are found outside of its main components, such as the brain and spinal cord. This system is known as the peripheral nervous system and is subdivided into two smaller systems. the sematic system and the autonomic nervous system the sematic nervous system is responsible for transporting motor and sensory information to and from the central nervous system this system is made up of nerves that connect to the skin, sensory organs, and all skeletal muscles the sematic system en It is also responsible for almost all voluntary muscle movements, as well as the processing of sensory information that comes through external stimuli, including hearing, touch and sight.

The structures that allow this communication to occur between nerves throughout the body and the central nervous system are known as afferents. Sensory neurons and efferent motor neurons now afferent simply means leading in and efferent means leading out, so just like in spinal nerves, afferent neurons carry information from the nerves to the central nervous system and efferent neurons take information From the central nervous system to muscle fibers throughout the body The autonomic nervous system is further divided into the sympathetic nervous system and the parasympathetic nervous system The sympathetic nervous system is vital to our survival Have you ever heard of the fight response or flight from danger?

The sympathetic nervous system revs up the body when faced with imminent danger to defend itself or escape the threat. The parasympathetic nervous system counterbalances the sympathetic response to danger, whether real or imagined, once the thread, the parasympathetic brings all the body systems back to normal It is normal that at this point you have a basic understanding of the nervous system, but let's do a quick summary. The basic purpose of the nervous system is to coordinate all activities of the body and allows the body to respond and adapt to changes that occur both inside and outside the body.

The two main parts of the nervous system are the central nervous system and the peripheral nervous system. The central nervous system is also divided into two main structures, the brain and the spinal cord. The brain is located inside the cranium or cranium and is made up of six main sections. These six sections are the cerebrum, the cerebellum, the midbrain pools, and the medulla oblongata. Another half of the central nervous system is the spinal cord and the spinal cord is the link between the brain and nerves and the rest of your body, the spinal cord is divided into four different regions, the cervical, thoracic, lumbar and spinal nerves afferents and efferents that fuse to form peripheral nerves.

Now that we know that the brain and spinal cord primarily make up the central nervous system, let's look at the peripheral nervous system. The peripheral nervous system is essentially the nervous system outside of the brain and spinal cord. The peripheral nervous system is then subdivided into two more systems. small ones called the somatic nervous system and the autonomic nervous system, as you can see the nervous system is quite complex and this is just the tip of the iceberg. Thanks for seeing it. Find more videos about the nervous system at CTE skills.com.