Nervous System

• What is the primary function of the nervous system?

  Control of body and communication
• What does the sensory function of the nervous system do during physical activities?

  Gathers information and sends it to the CNS
• How is information processed in the nervous system?

  It is interpreted in the brain for decisions
• What happens during the motor function of the nervous system?

  Information is sent to muscles for response
• What are the two main parts of the nervous system?

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

  Brain and spinal cord
• What is the role of the spinal cord in the CNS?

  It carries information to and from the brain
• What does the peripheral nervous system (PNS) include?

  Nerves going from CNS to body parts
• What are the two types of nerves in the PNS?

  Sensory nerves and motor nerves
• What do sensory nerves do?

  Take information from receptors to the CNS
• What do motor nerves do?

  Carry information from CNS to effectors
• What are the two parts of the peripheral nervous system (PNS)?

  • Somatic nervous system
  • Autonomic nervous system
• What does the somatic nervous system do?

  Gathers information from the external environment
• What does the autonomic nervous system do?

  Gathers information from the internal environment
• What are the two subsystems of the autonomic nervous system?

  • Sympathetic nervous system
  • Parasympathetic nervous system
• What is the process of sensory input when learning a skill?

  1. Eyes see the demonstration
  2. Ears hear the instructions
  3. Information is transformed into neural signals
  4. Transmitted to the brain
• What is the role of the sympathetic nervous system?

  Prepares the body for 'fight or flight'
• What is the role of the parasympathetic nervous system?

  Calms and relaxes the body
• What happens during selective perception in the brain?

  Important information is selected, others discarded
• What is short-term sensory storage (STSS)?

  Temporary storage of sensory information
• What is working memory (WM)?

  Temporary storage of selected information
• How long can information be held in working memory?

  Up to 20 seconds without repetition
• What is the role of long-term memory (LTM) in skill learning?

  Stores all motor skills that can be learned
• What does the response generator do?

  Organizes the response to the information
• What is the process of information processing in skill execution?

  1. Input of information
  2. Short-term sensory storage
  3. Working memory
  4. Response generation
  5. Output of skill performance
• What part of the brain is active when learning new movements?

  Motor cortex
• What does the cerebellum do?

  Coordinates actions and integrates movements
• What happens to the pupils during sympathetic activation?

  Pupils dilate to take in more light
• What does the sympathetic system control?

  Internal functions during 'fight or flight'
• What effect does the sympathetic system have on heart rate?

  Increases heart rate and contraction force
• What does the parasympathetic system do to the digestive system?

  Stimulates digestive system activity
• What are the roles of exteroceptors?

  • Assess surroundings
  • Judge distance and speed
  • Locate objects and teammates
• What are the roles of proprioceptors?

  • Provide information on muscle tension
  • Indicate how stretched muscles are
  • Inform on joint angles
• What is the function of a motor nerve?

  Carries impulses from CNS to muscles
• How are motor units recruited during muscle force increase?

  Small-diameter nerves first, then larger
• What do sensory nerves do?

  Carry impulses from receptors to the CNS
• What information do proprioceptors provide?

  Muscle tension, stretch, and joint angles