Physiology

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Across
  1. 3. POTENTIAL: A small local change in membrane voltage caused by stimulation of a neuron.
  2. 7. CELL: A type of glial cell in the peripheral nervous system that produces myelin.
  3. 8. A neuron within the CNS that connects sensory neurons to motor neurons.
  4. 11. A fatty insulating layer surrounding axons that increases the speed of nerve impulse conduction.
  5. 12. The junction where one neuron communicates with another cell.
  6. 13. A chemical messenger released from a neuron that transmits a signal across a synapse.
  7. 14. POTENTIAL: A rapid electrical signal that travels along the axon when a neuron reaches threshold.
  8. 15. NERVOUS SYSTEM The part of the nervous system responsible for voluntary control of skeletal muscles.
  9. 20. Branch-like extensions of a neuron that receive signals from other neurons.
  10. 22. ARCA rapid automatic response pathway involving sensory and motor neurons.
  11. 23. NERVOUS SYSTEM The division of the nervous system that controls involuntary body functions.
  12. 24. The sense that allows the body to detect its position and movement.
  13. 26. The basic functional cell of the nervous system that transmits electrical signals.
Down
  1. 1. The autonomic division responsible for “rest and digest” functions.
  2. 2. A neurotransmitter involved in muscle contraction and parasympathetic nervous system signaling.
  3. 4. The sense of taste.
  4. 5. The autonomic division responsible for the “fight or flight” response.
  5. 6. The long projection of a neuron that carries impulses away from the cell body.
  6. 7. RECEPTOR: A specialized cell or structure that detects stimuli such as light, sound, or touch.
  7. 9. The phase of an action potential when potassium ions leave the neuron restoring a negative membrane potential.
  8. 10. The phase of an action potential when sodium ions enter the neuron causing the membrane potential to become more positive.
  9. 16. A star-shaped glial cell that helps maintain the blood-brain barrier and supports neurons.
  10. 17. PUMP: A membrane protein that moves sodium out of the cell and potassium into the cell using ATP.
  11. 18. The sensory system responsible for smell.
  12. 19. POTENTIAL:The electrical charge difference across a neuron’s membrane when the neuron is not actively transmitting a signal.
  13. 21. A specialized retinal cell that detects light.
  14. 25. : A spiral-shaped inner ear structure responsible for hearing.