Nervous system

• What are the two main components of the CNS?

  The brain and spinal cord
• How does the brain work in relation to the body?

  It works contralaterally
• What are the four key areas of the brain?

  Frontal, temporal, parietal, occipital lobes
• What is the function of the spinal cord?

  Relays information to and from the brain
• What actually is the spinal cord?

  A bundle of nerves
• What are the two branches of the PNS?

  • Autonomic nervous system
  • Somatic nervous system
• What is the autonomic nervous system?

  An involuntary branch of the nervous system
• What vital functions does the autonomic nervous system coordinate?

  Breathing, heart rate, digestion
• What type of neurones does the autonomic nervous system contain?

  Unmyelinated neurones
• What does the somatic nervous system control?

  Responsible for voluntary movements and taking sensory information to the CNS
• What type of neurones does the somatic nervous system contain?

  Myelinated neurones
• What happens when a threat is signaled?

  The sympathetic division is activated
• What occurs when a threat is gone?

  The parasympathetic division is activated
• What is the 'rest and digest' response?

  The body's return to normal resting state
• What is the role of CNS?

  • Responsible for processing and interpreting information from other parts of the nervous system
  • Stores knowledge and enables us to think, remember and use language
• What is the role of PNS?

  • Follows instructions of the CNS
  • Collects information from and sends information to the rest of the body
• What is the fight or flight response?

  An automatic reaction to threat stimulated by the autonomic nervous system [and maintained by the endocrine system]
• When parasympathetic division is activated, what state is our body in?

  Rest and digest