nervous system

    Cards (9)

    • what is an effector
      muscle or a gland
    • what does a neurone do
      transmit information rapidly as electrical impulses
    • what is a stimulus
      change in environment
    • what does a myelin sheath do
      insulates and protects impulses
    • what do receptors do
      detect change in environment and send impulses along sensory neurone
    • what is the role of the CNS
      to coordinate a response
    • structure of sensory neurone
      one long dendron-carries nerve impulses from receptor cells to cell body
      one short axon-carries nerve impulses from cell body to CNS
    • structure of motor neurone
      many short dendrites to carry nerve impulses from CNS to cell body
      one long axon- carries nerve impulses from cell body to effector cells
    • structure of relay neurone
      many short dendrites-carry impulses from sensory neurones to cell body
      axon-carries nerve impulses from cell body to motor neurones
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