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HomeHomework HelpbiologyCentral Nervous System

Central Nervous System

The Central Nervous System (CNS) is a major part of the nervous system, composed of the brain and spinal cord, which coordinates sensory information and motor output. It is responsible for processing and integrating information, as well as governing reflexes and higher cognitive functions.

beginner
2 hours
Biology
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Overview

The central nervous system (CNS) is essential for controlling and coordinating all bodily functions. It consists of the brain and spinal cord, which work together to process information and respond to stimuli. The brain is responsible for higher functions such as thinking and memory, while the spina...

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Key Terms

Neuron
A nerve cell that transmits signals in the nervous system.

Example: Motor neurons control muscle movements.

Neurotransmitter
Chemicals that transmit signals across synapses between neurons.

Example: Dopamine is a neurotransmitter involved in reward and pleasure.

Cerebrum
The largest part of the brain, responsible for higher brain functions.

Example: The cerebrum controls thinking and voluntary movements.

Cerebellum
A part of the brain that coordinates movement and balance.

Example: The cerebellum helps maintain posture while walking.

Spinal Cord
A long bundle of nerves that runs down the back, connecting the brain to the body.

Example: The spinal cord transmits signals between the brain and limbs.

Reflex Action
An automatic response to a stimulus, processed by the spinal cord.

Example: The knee-jerk reaction is a reflex action.

Related Topics

Peripheral Nervous System
The part of the nervous system outside the CNS that connects the CNS to limbs and organs.
intermediate
Neuroanatomy
The study of the structure of the nervous system.
advanced
Neuroscience
The scientific study of the nervous system and its functions.
advanced

Key Concepts

BrainSpinal CordNeuronsNeurotransmitters