nervous system

• What is the primary function of the internal communication system in the body?


  It collects, processes, and responds to information in the environment.
• What are the two types of nervous systems?

  • Peripheral Nervous System (PNS)
  • Central Nervous System (CNS)
• What does the central nervous system (CNS) consist of?


  The brain and the spinal cord.
• What is the role of the spinal cord in the nervous system?


  It is responsible for reflex actions, such as pulling your hand away from a hot plate.
• How do neurons in the spinal cord function in relation to the CNS and PNS?


  They pass information from the brain to the PNS and vice versa.
• What is the primary function of the peripheral nervous system (PNS)?


  It transmits messages via millions of neurons to and from the CNS.
• What are the two main components of the peripheral nervous system (PNS)?


  • Autonomic Nervous System: controls vital bodily responses (e.g., stress response)
  • Somatic Nervous System: controls muscle movement (voluntary movement) and receives information from sensory receptors