Nervous System

• What is the primary function of the Nervous System?

  It carries messages to and from the brain
• What are the two main parts of the Nervous System?

  CNS and Peripheral NS
• What is the role of the Central Nervous System (CNS)?

  • Control of behavior
  • Regulation of physiological processes
  • Comprises the brain and spinal cord
  • Receives information from sensory receptors
  • Sends messages to muscles and glands
• What does the brain control?

  Conscious awareness and decision making
• What is the function of the spinal cord?

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

  Enables reflexes without brain involvement
• What comprises the Peripheral Nervous System (PNS)?

  • All nerves outside the CNS
  • Includes limbs and torso
  • Transmits messages to and from the CNS
  • Involves millions of neurons
• What are the two divisions of the Peripheral Nervous System?

  Somatic and autonomic nervous systems
• What is the function of the Somatic Nervous System?

  • Controls voluntary movements
  • Carries sensory and motor information
  • Involves touch, pain, pressure, temperature
  • Controls bodily movement by sending instructions to muscles
• What is the role of the Autonomic Nervous System?

  • Governs involuntary activities
  • Transmits information to vital organs
  • Manages stress, heartbeat, and digestion
• What are the two branches of the Autonomic Nervous System?

  • Sympathetic nervous system
  • Parasympathetic nervous system
• What is the function of the Sympathetic Nervous System?

  Prepares the body for emergencies
• What happens during a sympathetic response?

  Body releases energy and pupils dilate
• What does the Parasympathetic Nervous System do after a threat?

  Helps the body relax and recover
• What processes does the Parasympathetic Nervous System restart?

  Digestion and heart rate regulation