central nervous system

Examples of central nervous system in the following topics:

• Intro to the Central Nervous System

• The Central Nervous System (CNS)

  • The central nervous system is made up of the brain and spinal cord, which process sensory input and provide instructions to the body.
  • The central nervous system (CNS) is one of the two major subdivisions of the nervous system.
  • Together with the peripheral nervous system (PNS), the CNS performs fundamental functions that contribute to an organism's life and behavior.
  • The nervous system has three main functions: gathering sensory information from external stimuli, synthesizing that information, and responding to those stimuli.
  • The three major components of the central nervous system: 1) the brain, 2) brain stem, and 3) spinal cord.

• Introduction to the Nervous System

  • The general flow of information is that the peripheral nervous system (PNS) takes in information through sensory neurons, then sends it to the central nervous system (CNS) to be processed.
  • The nervous system can be divided into two major parts—the central nervous system (CNS) and the peripheral nervous system (PNS).
  • The central nervous system includes the spinal cord and the brain.
  • The PNS can be further subdivided into the autonomic nervous system and the somatic nervous system.
  • The nervous system of the human body, including the brain and spinal cord (central nervous system) and all the nerves of the body (peripheral nervous system).

• The Nervous System

  • The nervous system is composed of the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves).
  • Two major divisions of the nervous system are the central nervous system (CNS) and the peripheral nervous system (PNS).
  • The vertebrate central nervous system (CNS) contains the brain and the spinal cord .
  • The main function of the PNS is to connect the central nervous system (CNS) to the limbs and organs, essentially serving as a communication relay between the brain and the extremities.
  • The central nervous system (2) is a combination of the brain (1) and the spinal cord (3).

• Subdivisions of the Nervous System

  • The nervous system is comprised of two major subdivisions, the central nervous system (CNS) and the peripheral nervous system (PNS).
  • The PNS is further subdivided into the autonomic nervous system (ANS) and the somatic nervous system.
  • The enteric nervous system (ENS) controls the gastrointestinal system and is sometimes considered part of the autonomic nervous system.
  • The central nervous system (2) is a combination of the brain (1) and the spinal cord (3).
  • The brain and the spinal cord are the central nervous system (CNS) (shown in yellow).

• Development of the Peripheral Nervous System

  • The peripheral nervous system develops from two strips of tissue called the neural crest, running lengthwise above the neural tube.
  • In vertebrates, the first sign of the nervous system is the appearance of a thin strip of cells along the center of the back, called the neural plate.
  • The inner portion of the neural plate (along the midline) is destined to become the central nervous system (CNS), the outer portion the peripheral nervous system (PNS).
  • Subsequently, neural crest cells from the roof plate of the neural tube undergo an epithelial to mesenchymal transition, delaminating from the neuroepithelium and migrating through the periphery where they differentiate into varied cell types, including pigment cells and the cells of the peripheral nervous system.
  • The neural tube will give rise to the central nervous system, while the neural crest will give rise to the peripheral nervous system.

• The Peripheral Nervous System (PNS)

  • The peripheral nervous system connects the central nervous system to environmental stimuli to gather sensory input and create motor output.
  • The peripheral nervous system (PNS) is one of the two major components of the body's nervous system.
  • In conjunction with the central nervous system (CNS), the PNS coordinates action and responses by sending signals from one part of the body to another.
  • The PNS can also be divided into two separate systems: the autonomic nervous system and the somatic nervous system.
  • The human nervous system, including both the central nervous system (in red: brain, brain stem, and spinal cord) and the peripheral nervous system (in blue: all other neurons and receptors).

• Neurons and Glial Cells

  • In most types of vertebrate animals, it consists of two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS).
  • Flatworms of the phylum Platyhelminthes have both a central nervous system, made up of a small "brain" and two nerve cords, and a peripheral nervous system containing a system of nerves that extend throughout the body.
  • Compared to invertebrates, vertebrate nervous systems are more complex, centralized, and specialized.
  • In (f) vertebrates, the brain and spinal cord comprise the central nervous system, while neurons extending into the rest of the body comprise the peripheral nervous system.
  • Recall the differences in structure and function between the central and peripheral nervous systems

• Organization of the Nervous System

  • A nervous system is what allows us to react to the changing environment around us.
  • Central to the functioning of the nervous system is an extensive network of specialized cells called neurons.
  • In most animals, including humans, the nervous system consists of two parts: central and peripheral.
  • The central nervous system (CNS) is composed of the brain, spinal cord, and retina.
  • Gross organization of the nervous system, with the peripheral nervous system, the spinal, and the cortical levels.

• Functions of the Nervous System

  • The primary function of the nervous system is to coordinate and control the various functions of our body.
  • The nervous system has three overlapping functions.
  • The nervous system is a highly integrated system.
  • Nervous system processes and interprets sensory input and decides what should be done at the each moment.
  • These sensory input is sent into the central nervous system which has the ability to determine an appropriate response.