Question: What Does The Nervous System Do?

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..

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 can go wrong with the nervous system?

Some serious conditions, diseases, and injuries that can cause nervous system problems include: Blood supply problems (vascular disorders). Injuries (trauma), especially injuries to the head and spinal cord. Problems that are present at birth (congenital).

What is the nervous system simple definition?

The nervous system controls everything you do, including breathing, walking, thinking, and feeling. This system is made up of your brain, spinal cord, and all the nerves of your body. The brain is the control center and the spinal cord is the major highway to and from the brain.

Are eyes part of the nervous system?

Retina, the light sensing tissue on the bottom of the eye, can be considered an integral part of the central nervous system (CNS). During fetal development, it matures from part of the brain and its innervation closely resembles that of the brain.

What is the function of the nervous system?

The nervous system is involved in receiving information about the environment around us (sensory functions, sensation) and generating responses to that information (motor functions, responses) and coordinating the two (integration). Sensation.

What are 3 things the nervous system does?

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….The nervous system has 3 main functions: sensory, integration, and motor.Sensory. … Integration. … Motor.

What is the most important part of the nervous system?

The brain and the spinal cord make up the central nervous system. The nervous system is the most complex and highly organized body system. It receives information from the sensory organs via nerves, transmits the information through the spinal cord, and processes it in the brain.

What is nervous system and its types?

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.

Can you live without nerves?

Your spine is made up of your vertebrae as well as your spinal cord and associated nerves. It’s vital to your overall health and functioning, and you can’t live without it.

What are 5 facts about the nervous system?

11 Fun Facts About the Nervous SystemThe 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.More items…•

Why do we need to study nervous system?

Studying the nervous system advances understanding of our basic biology and body function. Knowing how things typically work can help shed light on what may happen when there are problems. It can help researchers find ways to prevent or treat problems that affect the brain, nervous system, and body.

What diseases affect the nervous system?

Nervous system diseasesAlzheimer’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.More items…

What organ system is the most important?

nervous systemWhile your heart is a vital organ, the brain (and the nervous system that attaches to the brain) make up the most critical organ system in the human body. The human nervous system is responsible for coordinating every movement and action your body makes.

How is nervous system classified?

The nervous system is classified into the central and peripheral nervous system. The central nervous system (CNS) consists of the brain and spinal cord, leaving everything else in the peripheral nervous system (PNS).