Question: What does the human nervous system do?

The nervous system is made up of the brain, spinal cord and nerves. It is the body’s communication system that controls much of what your body does. It allows you to do things like walk, speak, swallow, breathe and learn, and controls how your body reacts in an emergency.

What is the function of the human nervous system?

At a more integrative level, the primary function of the nervous system is to control and communicate information throughout the body. It does this by extracting information from the environment using sensory receptors. This sensory input is sent to the central nervous system, which determines an appropriate response.

What are the 4 main functions of the nervous system?

The four main functions of the nervous system are:

  • Control of body’s internal environment to maintain ‘homeostasis’ An example of this is the regulation of body temperature. …
  • Programming of spinal cord reflexes. An example of this is the stretch reflex. …
  • Memory and learning. …
  • Voluntary control of movement.
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Which organ is part of our nervous system?

The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.

What is nervous system disorder?

Disorders of the nervous system may involve the following: Vascular disorders, such as stroke, transient ischemic attack (TIA), subarachnoid hemorrhage, subdural hemorrhage and hematoma, and extradural hemorrhage. Infections, such as meningitis, encephalitis, polio, and epidural abscess.

What is nervous system with diagram?

The Central Nervous System is the integration and command center of the body. It consists of the brain, spinal cord and the retinas of the eyes. The Peripheral Nervous System consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect the central nervous system to arms, hands, legs and feet.

What are 5 interesting facts about the nervous system?

11 Fun Facts About the Nervous System

  • The body has billions of nerve cells. …
  • Neurons are made of three parts. …
  • Neurons may look different from one another. …
  • Neurons are programmed to do different things. …
  • There are two parts of the nervous system. …
  • There are two types of nervous systems. …
  • The involuntary system is broken down into three parts.

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Why is nervous system important?

The nervous system helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body. The nervous system uses both electrical and chemical means to send and receive messages.

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How do you know if your central nervous system is damaged?

Numbness, tingling, weakness, or inability to move a part or all of one side of the body (paralysis). Dimness, blurring, double vision, or loss of vision in one or both eyes. Loss of speech, trouble talking, or trouble understanding speech. Sudden, severe headache.

Which body part sends messages to the brain?

The peripheral nervous system carries messages to and from the central nervous system. It sends information to the brain and carries out orders from the brain. Messages travel through the cranial nerves, those which branch out from the brain and go to many places in the head such as the ears, eyes and face.

What is nervous system parts and functions?

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.

What are 5 diseases of the nervous system?

Nervous system diseases

  • Alzheimer’s disease. Alzheimer’s disease affects brain function, memory and behaviour. …
  • Bell’s palsy. Bell’s palsy is a sudden weakness or paralysis of facial muscles on one side of the face. …
  • Cerebral palsy. …
  • Epilepsy. …
  • Motor neurone disease (MND) …
  • Multiple sclerosis (MS) …
  • Neurofibromatosis. …
  • Parkinson’s disease.

Can stress cause neurological symptoms?

Symptoms of functional neurologic disorders may appear suddenly after a stressful event, or with emotional or physical trauma. Other triggers may include changes or disruptions in how the brain functions at the structural, cellular or metabolic level. But the trigger for symptoms can’t always be identified.

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How do doctors check your nervous system?

A test of the communication between a nerve and the muscle it works with called an electromyogram, or EMG. This is done with electrodes on your skin or a needle put into a muscle. A series of tests called evoked potentials to measure your brain’s response to stimulation of your hearing, vision, and certain nerves.

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