What are the major organs of the nervous system and their functions?

The nervous system has three main functions:

To collect sensory input from the body and external environment.

To process and interpret the sensory input.

To respond appropriately to the sensory input.

In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.

The nervous system is an organ system in charge of sending messages to and from the brain and spinal cord to and from all parts of the body. It consists of the central nervous system and the peripheral nervous system. Another important part of the nervous system is the sense organs to which a special page is devoted.

Peripheral Nervous System. The peripheral nervous system is divided into two major parts: the somatic nervous system and the autonomic nervous system.

Their function is to remove liquid waste from the blood in the form of urine; keep a stable balance of salts and other substances in the blood; and produce erythropoietin, a hormone that aids the formation of red blood cells. The kidneys remove urea from the blood through tiny filtering units called nephrons.

The peripheral nervous system includes all the nerves that go from the skin, muscle, and organs to the spinal cord and, eventually, the brain. However, the central nervous system is composed of the brain and spinal cord.

We could not function without our central nervous system. It controls all parts of the body. It receives and interprets messages from all parts of the body and sends out instructions. The three main components of the central nervous system are the brain, spinal cord and neurons.

Some of your peripheral nervous system (PNS) is under your voluntary control – the nerves that carry instructions from your brain to your limbs, for example. As well as controlling your muscles and joints, it sends all the information from your senses back to your brain.

The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. The somatic system consists of nerves that connect the brain and spinal cord with muscles and sensory receptors in the skin.

It has three main parts:

The cerebrum fills up most of your skull. It is involved in remembering, problem solving, thinking, and feeling.

The cerebellum sits at the back of your head, under the cerebrum. It controls coordination and balance.

The brain stem sits beneath your cerebrum in front of your cerebellum.

The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of the nerve fibers that branch off from the spinal cord and extend to all parts of the body, including the neck and arms, torso, legs, skeletal muscles and internal organs.

The major parts of the digestive system:

Salivary glands.

Pharynx.

Esophagus.

Stomach.

Small Intestine.

Large Intestine.

Rectum.

Accessory digestive organs: liver, gallbladder, pancreas.

The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.

The brain sends messages via the spinal cord to peripheral nerves throughout the body that serve to control the muscles and internal organs. The somatic nervous system is made up of neurons connecting the CNS with the parts of the body that interact with the outside world.

the drawing at the right, shows how it connects the body to the Central Nervous System (CNS = spinal cord in the vertebral column [“backbone”] and brain in the skull). The peripheral nervous system is made up of nerves, which consist of bundles of axons (which are also called fibers).

Specifically, the somatic nervous system is responsible for movement of voluntary muscles and the process known as a reflex arc. This system carries nerve impulses back and forth between the central nervous system, which is the brain and the spinal cord, and the skeletal muscles, skin, and sensory organs.

The nervous system has three general functions: a sensory function, an interpretative function and a motor function. Sensory nerves gather information from inside the body and the outside environment. The nerves then carry the information to central nervous system (CNS).

The nervous system allows the body to respond to changes in the environment. The central nervous system consists of the brain and spinal cord. Receptors are specialised cells that can detect changes in the environment, or stimuli, and turn them into electrical impulses.

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.

The brain is located in the head, usually close to the sensory organs for senses such as vision. The brain is the most complex organ in a vertebrate’s body. Physiologically, the function of the brain is to exert centralized control over the other organs of the body.