Across
- 3. brain imaging technique that detects differences between oxy- and deoxy-haemoglobin
- 4. long cytoplasmic extension of nerve cells
- 9. neurotransmitter used at the neuromuscular junction
- 12. this is the period when a second action potential cannot be generated
- 14. light-sensitive pigmnet in rod cells
- 15. brain region responsible for conscious thought, control of movement and sensory processing etc etc
- 19. non-protein component of the pigment in rod cells
- 21. gap formed between Schwann cells
- 22. blocks voltage-gated sodium channels
- 24. brain region that contains control centres for e.g. control of breathing and heart rates
- 25. nerve conduction along myelinated nerve cells
- 26. splitting of the light-sensitive pigment in rod cells, caused by light
- 27. -70mV
- 29. CNS = brain and ...
Down
- 1. when this is reached an action potential is generated
- 2. detects a stimulus
- 4. plant hormone causing phototropic responses
- 5. light-sensitive plant pigment
- 6. caused by potassium channels being slower to close
- 7. +45mV
- 8. nerve cell
- 10. type of nerve cell that connects to an effector
- 11. gap between nerve cells
- 13. ion required for neurotransmitter release
- 16. precursor to dopamine, used to treat Parkinson's disease
- 17. essential for transmission of a nerve impulse across a synapse
- 18. neurotranmitter lacking in Parkinson's disease
- 20. plant hormone involved in seed germination
- 23. decrease in the response to a repeated harmless stimulus
- 28. ion whose movement causes depolarisation