Division of the Nervous System

• What is in the CNS?

  Spinal cord and the brain
• What's in the PNS?

  All the nerves outside the brain and spinal cord
• What is the PNS broken into?

  Somatic nervous system and the autonomic nervous system
• What is the autonomic nervous system broken up into?

  Sympathetic branch and the parasympathetic branch
• What are nerves that carry sensory input to the CNS called?

  Afferent
• What are the nerves that are carry motor input away from the CNS called?

  Efferent
• What is the autonomic nervous system divide into?

  Sympathetic and parasympathetic branches
• What is the role of the autonomic nervous system?


  Controls and regulates internal organs and glands in the endocrine system

  Acts consciously and unconsciously to maintain homeostasis
• What is the role of the sympathetic branch?

  Expends energy, most active, speeds up
• What is the role of the parasympathetic branch?

  Conserving energy, maintains stress levels, slows down
• What are examples of what the autonomic nervous system controls?

  Digestion

  Blood pressure

  Heart rate