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Related Concept Videos

What is a Nervous System?01:25

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The nervous system coordinates body functions through its complex network of nerve cells, enabling sensation and movement. It is divided into two primary parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and the spinal cord. The brain acts as the body's control center, processing sensory information and coordinating responses. The spinal cord functions as a major signaling pathway for the brain and the rest of the body.
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The nervous system is one of the most complex systems in our body. It is organized into two main divisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
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The human nervous system is divided into two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is composed of the brain and spinal cord, while the PNS contains nerve cells, clusters of nerve cells, and the sensory receptors that are outside the CNS. The PNS has two types of nerve cells: sensory (afferent) and motor (efferent). Sensory cells send signals to the CNS from receptors, and motor cells carry signals from the CNS to organs, muscles, and...
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The nervous system, responsible for sensing, integrating, and responding to various stimuli, is divided into the central nervous system (CNS) and the peripheral nervous system (PNS). The PNS has two functional divisions: the sensory or afferent division and the motor or efferent division.
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Peripheral Nervous System: Ganglia and Nerves01:24

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The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
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Nervous system: part 1.

Alistair Farley1, Carolyn Johnstone, Charles Hendry

  • 1School of Nursing and Midwifery, University of Dundee, Dundee, Scotland.

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Summary
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This article introduces the nervous system, detailing its major divisions, nerve cell structure, and impulse transmission. It also covers brain blood supply, laying the groundwork for future articles on the central and peripheral nervous systems.

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Area of Science:

  • Life Sciences
  • Neuroscience

Background:

  • The nervous system is a complex network responsible for coordinating bodily functions.
  • Understanding its structure and function is fundamental to life sciences.

Purpose of the Study:

  • To provide an introductory overview of the nervous system's major divisions and functions.
  • To describe the basic structure of a nerve cell and the process of nerve impulse generation and conduction.
  • To cover the blood supply to the brain.

Main Methods:

  • Descriptive review of nervous system anatomy and physiology.
  • Explanation of neurobiological concepts including nerve cell structure and impulse transmission.
  • Discussion of cerebral blood flow.

Main Results:

  • The nervous system is broadly divided into functional components.
  • Nerve impulses are generated and conducted through electrochemical processes.
  • Adequate blood supply is crucial for brain function.

Conclusions:

  • This article serves as a foundational introduction to the nervous system.
  • Subsequent articles will delve deeper into the central and peripheral nervous systems and associated disorders.