Nervous System

By: Sarah Coyle 3rd #4

What does the Nervous System do?

  • It receives information from internal and external enviornments.
  • Responds to stimuli.
  • Helps maintain homeostasis.
  • Coordinates senses.
  • Responsible for learning and memory.
  • maintains conciousness.

3 Kinds of Neurons

  • Sensory neurons gets information from external and internal stimuli.
  • Interneurons form one neuron to another.
  • motor neurons consist of muscles and glands.

All of these nerve cells carries an impulse through the Nervous System.


Pseudounipolar cells (example: dorsal root ganglion cells). Actually, these cells have 2 axons rather than an axon and dendrite. One axon extends centrally toward the spinal cord, the other axon extends toward the skin or muscle.

  • Sensory (or afferent) neurons: send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears) TOWARD the central nervous system.
  • Motor (or efferent) neurons: send information AWAY from the central nervous system to muscles or glands.
  • Interneurons: send information between sensory neurons and motor neurons. Most interneurons are located in the central nervous system.

What other body systems does the nervous system work with?

Your Nervous System is a very complicated System, it helps control your bodies growth, behavior, and thoughts. The Nervous System works with every system for that matter.