HUMAN ANATOMY AND PHYSIOLOGY-2

Q2. The structural and functional unit of nervous system is

Q3. Which cell forms myelin in CNS?

Q4. Myelin in PNS is produced by

Q5. Which neuroglial cell produces CSF lining ventricles?

Q6. Microglia mainly act as

Q7. Neuron receives impulses through

Q8. Impulse leaves neuron through

Q9. Gap in myelin sheath is

Q10. Fastest conduction occurs in

Q11. Resting membrane potential is about

Q12. Depolarization mainly occurs due to influx of

Q13. Repolarization occurs mainly due to efflux of

Q14. Action potential obeys

Q15. Threshold potential initiates

Q16. Impulse jumps between nodes in

Q17. Functional junction between neurons is

Q18. Chemical released at synapse is

Q19. Main excitatory neurotransmitter in CNS

Q20. Main inhibitory neurotransmitter in brain

Q21. Neurotransmitter at neuromuscular junction

Q22. Pain receptors are called

Q23. Receptors for light are

Q24. Brain and spinal cord constitute

Q25. Outermost meningeal layer

Q26. Middle meningeal layer

Q27. Innermost meningeal layer

Q28. CSF is mainly produced by

Q29. Brain contains how many ventricles?

Q30. Largest part of brain

Q31. Center for intelligence

Q32. Balance and posture controlled by

Q33. Brain stem consists of

Q34. Vital respiratory center is in

Q35. Spinal cord begins at

Q36. Ascending tracts carry

Q37. Descending tracts carry

Q38. Simple reflex center

Q39. Reflex action is

Q40. Sensory neuron is also called

Q41. Motor neuron is called

Q42. Neuron with one axon and one dendrite

Q43. Most common neuron type

Q44. Supportive CNS cell

Q45. Node of Ranvier helps

Q46. Synaptic delay occurs at

Q47. Neurotransmitter is stored in

Q48. Gray matter mainly contains

Q49. White matter mainly contains

Q50. The reflex arc contains