Anatomy 9.5-9.9 Vocabulary

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Across
  1. 3. the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron
  2. 8. (neuron) 2 or more single neurons connect with 1 cell body of a neuron
  3. 10. arc the nerve pathway involved in a reflex action including at its simplest a sensory nerve and a motor nerve with a synapse between.
  4. 12. pools functional groups of interconnected neurons
  5. 14. Neurotransmitters are broken down ending the action potential
  6. 16. -Signals pushing a neuron's accelerator
  7. 17. slows neuron's firing speed
  8. 18. chemical messengers that cross the synaptic gaps between neurons
  9. 19. May excite or inhibit autonomic nervous system actions.
Down
  1. 1. CNS: Creates a sense of feeling good:
  2. 2. P A neurotransmitter that is involved in the transmission of pain messages to the brain.
  3. 4. PNS: Stimulates Skeletal muscle,
  4. 5. nerve carries messages away from the brain and spinal cord to muscles and organs; efferent nerve
  5. 6. a neurotransmitter's reabsorption by the sending neuron
  6. 7. nerve carries messages toward the brain and spinal cord from a receptor; afferent nerve
  7. 9. chemical in the brain that plays a specialized role in pain reduction
  8. 11. (neuron) 1 neuron sending signals to 2 or more cell bodies of other neurons
  9. 13. Controls skeletal muscle actions
  10. 15. Cleft The narrow gap that separates the presynaptic neuron from the postsynaptic cell.