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Pacemaker of the heart is

A. S.A. node

B. A.V. node

C. A.V. septum

D. LA. Septum

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  1. The vertebrate heart is classified as
  2. An excess of tissue fluid in the extracellular space is called
  3. The blood pigment of cephalopods such as Septa and Octopus is
  4. The sympathetic nerve causes the heart rate to
  5. The left atrioventricular aperture in man is guarded by
  6. The erythrocytes of mammals are non nucleated except in
  7. A person with blood group 'C required blood transfusion. Blood of which group can be given to him?
  8. The pH of blood in arteries and veins is
  9. Emotions such as worry, anxiety, fear can elevate a person's blood pressure by
  10. Mammalian erythrocytes in blood are
  11. The antibodies are formed in
  12. The blood platelets are the source of
  13. The life of erythrocytes in mammalian blood is about
  14. Rh factor is named after
  15. Urea is transported by
  16. The white pus of an infected part in the body is composed of
  17. Diapedesis is
  18. The chamber of the mammalian heart from which deoxygenated blood is sent for oxygenation is
  19. Blood passes from the arterioles to venules via
  20. Universal recipient is the person with the blood group
  21. The vein which carries oxygenated blood is
  22. RBCs placed in a hypertonic solution
  23. Corneal grafts are generally not rejected by the recipient because cornea is
  24. The process of blood cells formation is called
  25. The largest blood corpuscle is
  26. Hamburger's phenomenon is also called
  27. Clotting of blood oozing out of a wound, involves
  28. The nerve like modified muscle in the right auricle is called
  29. William Harvey is known for the discovery of
  30. A condition characterised by an increase in the number of erythrocytes in the circulation is