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 are the 4 types of nervous system?
The PNS is divided into three separate subsystems, the somatic, autonomic, and enteric nervous systems. Somatic nerves mediate voluntary movement. The autonomic nervous system is further subdivided into the sympathetic and the parasympathetic nervous systems.
What defines nervous system?
Your nervous system is your body’s command center. Originating from your brain, it controls your movements, thoughts and automatic responses to the world around you. It also controls other body systems and processes, such as digestion, breathing and sexual development (puberty).
What is nervous system answer?
The nervous system is a body system which sends signals around the body. It lets animals respond to what is around them. The central nervous system is the brain, the spinal cord, and nerves. … The nervous system is made up of neurons. Other cells, such as glial cells keep the neurons safe and healthy.
What are the 2 nervous systems?
The nervous system is made up of the central nervous system and the peripheral nervous system: The brain and the spinal cord are the central nervous system. The nerves that go through the whole body make up the peripheral nervous system.
What are the 3 types of nervous system?
It has three parts: The sympathetic nervous system. The parasympathetic nervous system. The enteric nervous system.
What are the 5 main parts of the nervous system?
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.
- Afferent neurons. …
- Efferent neurons. …
What are the types of nerves?
The main 2 types of nerves are sensory nerves and motor nerves.
- Sensory nerves also known as afferent nerves, carry impulses from sensory receptors towards the brain.
- Motor nerves also known as efferent nerves, carry impulses away from the brain to muscles and glands.
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.
Why nervous system is 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.
What is nervous system class 10?
Nervous system is the organ system present in the animals to control and coordinate different activities of the body. Nervous system comprises of the brain, the spinal cord, and a huge network of nerves that are spread throughout the body. … Nerves are thread like structures emerging out of the brain and spinal cord.
What is the largest nerve in the body?
The sciatic nerve is the largest and longest nerve in the human body, originating at the base of the spine and running along the back of each leg into the foot. At its thickest point, it is about as wide as an adult thumb.
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.