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Ciliated epithelium in the trachea of mammals helps in

A. sucking-in air

B. pushing expired air out

C. pushing mucus out

D. keeping the alveolar air in circulation

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  1. To take air into the lungs, the diaphragmmust be
  2. The respiratory tubes devoid of car-tilagenous rings are
  3. In rabbits, respiration takes place in
  4. In response to high altitude hypoxia supply of oxygen to the tissue is maintained by
  5. Colour of oxyhaemoglobin is
  6. Which of the following can respire in total absence of air (anoxyliosis)?
  7. The greatest volume of air that can be expired after a maximum inspiratory affect, is its
  8. A normal man respires in a minute
  9. The iron containing haemoglobin pigment is a
  10. The process of breathing-in of oxygen rich air from outside is called
  11. The metal associated with haemoglobin is
  12. The rate and depth of breathing is primarily controlled by medulla by
  13. The regulatory centre for respiration is situated in the
  14. The "mountain sickness" in persons climbing to high attitudes without the aid of oxygen cylinders is…
  15. The maximum volume of inspirable air is called
  16. The functional unit of the lung is
  17. The opening into the wind pipe or trachea is called
  18. Oxygen will diffuse through a membrane only if it is
  19. Diaphragm is characteristic of
  20. Ciliated epithelium in the trachea of mammals helps in
  21. Anoxia means
  22. The carbon dioxide pressure in the lung capillaries is
  23. In frog, the alveoli are surrounded by
  24. The respiratory portion of the respiratory tract consists of
  25. Tissue respiration is a process by which
  26. The medullary inspiratory centre is always under direct control of
  27. In a man at rest the body's cells consume approximately
  28. The vibrations of which of these membranes produces vocal sounds?
  29. Air directly enters the tracheae via the
  30. The respiratory disease immediately related to cigarette smoking is