Psychology - A-level AQA

• • Complex network of nerve cells and neurotransmitters which allows for communication around the body
  • Reponsibe for functions such as consciousness thought and memory
  • CNS - Central nervous system consists of the brain and spinal chord
  • PNS -Peripheral nervous system - relays info from the CNS to everywhere else in the body
  • SNS - Somatic nervous system (Voluntary) - musckoskeletal movements, and reflexes, pain
  • ANS - Autonomic nervous system (automatic) - heartbeat

  1. Sympathetic branch - stimulates activity
  2. Parasympathetic branch - relaxes
• The somatic nervous system is responsible for voluntary movements and sensory perception.
• The autonomic nervous system is responsible for regulating involuntary bodily functions, such as heart rate, digestion, and breathing.
• The role of the sympathetic branch of the autonomic nervous system is to activate the body's fight-or-flight response in times of stress or danger.
• The role of the peripheral nervous system is to transmit signals between the central nervous system and the rest of the body.
• The central nervous system functions to process and coordinate information, regulate bodily functions, and control behavior and movement.