Cryptic Crossword no.69

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Across
  1. 2. North country leader needed
  2. 4. Each gets endless ecstasy
  3. 5. Time to teach thoroughly
  4. 7. Article about first of April
  5. 10. Male doctor's first concern
  6. 11. Yes! Yell energetically
  7. 14. Twist and turn around "lake"
  8. 16. Exit suddenly, e.g., emergency
  9. 18. You ultimately upset us
  10. 19. Second attempt to get rid of insect
Down
  1. 1. Confused "owl" left in the dark
  2. 3. One consumed by desire
  3. 6. Electronic, or missing end of envelope
  4. 8. Name put inside notes
  5. 9. Five enter vault cautiously
  6. 11. Why young goat jumps around
  7. 12. Girl left to be flexible
  8. 13. Line leader making an entrance
  9. 15. Round fruit? Oh, of course!
  10. 17. One "in" charge, endlessly involved