Nervous system

• What does the nervous system allow us to do?

  Detect and respond to stimuli
• What are the two types of responses in the nervous system?

  Conscious and unconscious responses
• What is the purpose of a reflex action?

  To prevent damage to the body
• What are the two parts of the nervous system?

  Central nervous system and peripheral nervous system
• What does the central nervous system (CNS) consist of?

  The brain and spinal cord
• What are neurons?

  Nerve cells in the nervous system
• What is the function of Schwann cells?

  To insulate nerve fibers
• What are the three types of neurons?

  Sensory, motor, and interneurons
• What do sensory neurons do?

  Connect receptors to the CNS
• What is the role of motor neurons?

  To transmit signals from the CNS to effectors
• What is a reflex arc?

  A neural pathway that controls a reflex action
• What is a synapse?

  A gap between neurons
• What do neurotransmitters do?

  Transmit signals across synapses