What are the three principal functions of the nervous system crash course?
The Organization of the Nervous System (1:19) From writing novels, to debating time travel, to juggling knives, all of your thoughts, and actions, and emotions can be boiled down into three principal functions: sensory input, integration, and motor output.
How does nervous system work step by step?
The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.
What is the nervous system 7th grade?
The nervous system is like a network that relays messages back and forth from the brain to different parts of the body. These messages allow you to do things like walk, think, feel, be scared, and even breathe. The brain is the central computer that controls all the functions of your body.
What is the main function of the nervous system quizlet?
The primary function of the nervous system is to collect a multitude of sensory information; process, interpret, and integrate that information; and initiate appropriate responses throughout the body.
What is the main function of the nervous system?
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 are the 4 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.
Can you live without a nervous system?
Since it controls vital functions such as breathing, swallowing, digestion, eye movement and heartbeat, there can be no life without it. But the rest of the brain is obviously capable of some remarkable feats, with one part able to compensate for deficiencies in another.
What would happen if we had no neurons?
Everything we think and feel and do would be impossible without the work of neurons and their support cells, the glial cells called astrocytes (4) and oligodendrocytes (6). Neurons have three basic parts: a cell body and two extensions called an axon (5) and a dendrite (3).