the nervous system

• What is the primary function of the nervous system?

  To carry messages to and from the brain
• What are the two main functions of the nervous system?

  To collect information and coordinate organs
• What does the Central Nervous System (CNS) consist of?

  The brain and the spinal cord
• What role does the CNS play in the body?

  Controls behavior and regulates physiological processes
• What does the Somatic Nervous System do?

  Relays nerve impulses between CNS and body

  
• What is the function of the Autonomic Nervous System?

  Controls involuntary actions like digestion
• What is the brain's role in the nervous system?

  Center of all conscious awareness
• How is the brain organized?

  Divided into areas for different tasks
• What does the spinal cord do?

  Relays information between brain and body
• How does the spinal cord assist the brain?

  Allows brain to regulate bodily processes
• What does the Somatic Nervous System transmit?

  Messages from the senses to the CNS

  
• What actions does the Somatic Nervous System direct?

  Muscles to react and move

  
• What does the Autonomic Nervous System regulate?

  Involuntary actions like digestion
• What is the role of the Sympathetic Nervous System?

  Helps deal with emergencies
• What does the Sympathetic Nervous System prepare the body for?

  Rapid action during threats
• What is the function of the Parasympathetic Nervous System?

  Conserves natural activity and relaxes
• What does the Somatic Nervous System consist of?

  12 pairs of cranial nerves and 31 spinal nerves

  
• How do the branches of the Autonomic Nervous System differ?

  They regulate the same organs with opposite effects
• What happens to the body during an emergency situation?

  The sympathetic nervous system activates
• What are the physical effects of the sympathetic nervous system activation?

  Increases heart rate and blood pressure
• What happens after an emergency situation has passed?

  The parasympathetic nervous system activates
• What are the psychological effects of the parasympathetic nervous system activation?

  Promotes relaxation and reduces stress
• What are the main components of the nervous system?

  • Central Nervous System (CNS)
  • Peripheral Nervous System (PNS)
  • Somatic Nervous System
  • Autonomic Nervous System

  
• What are the two branches of the Autonomic Nervous System?

  • Sympathetic Nervous System
  • Parasympathetic Nervous System

  
• How does the body respond to a threat?

  1. Sympathetic nervous system activates
  2. Increases heart rate and blood pressure
  3. Prepares body for rapid action
  4. Parasympathetic nervous system activates post-threat
  5. Promotes relaxation and recovery
• What are the four lobes of the brain and their primary functions?

  1. Frontal lobe - decision making
  2. Parietal lobe - sensory processing
  3. Temporal lobe - auditory processing
  4. Occipital lobe - visual processing
• What is the role of the hypothalamus?

  • Maintains homeostasis
  • Regulates hunger, temperature, and thirst