NERVOUS SYSTEM

• What are the two parts of the nervous system?

  Central nervous system and peripheral nervous system
• What is the nervous system?

  a specialised network of cells and the primary communication system of our body. Based on electrical signals
• what are the two main functions of the nervous system?

  collect, process and respond to information in the environment

  co-ordinate the working of different organs and cells
• what makes up the CNS?

  Brain and Spinal cord
• How many hemispheres make up the brain?

  two
• what is the centre of conscious awareness?

  the brain
• What is the spinal cord responsible for?

  reflex actions
• what does the spinal cord do?

  pass messaged to and from the brain and connects nerves to the PNS
• what does the Peripheral nervous system do?

  transmits messages to and from the nervous system
• what is the PNS divided into?

  Autonomic nervous system and the somatic nervous system
• what does the autonomic nervous system do?

  carries out involuntary/automatic movement such as breathing and heart rate
• what does the somatic nervous system do?

  communicates between CNS and outside world, responsible for carrying out voluntary muscle movement. Receives external information from sensory receptors
• what is the autonomic nervous system split into?

  sympathetic and parasympathetic nervous system
• what does the sympathetic nervous system do?

  prepares body for fight or flight, sends messages to organs to help us prepare for action
• what does the parasympathetic nervous system do?

  returns the body to normal after the fight or flight, sends messages to organs to reverse the effects of the sympathetic nervous system
• what does the brain do?

  processes incoming information from sensory neurons, makes decisions , communicates these to other neurons