Physiology — MCQs

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1. Which organ is primarily responsible for filtering blood and forming urine?





2. Which part of the brain regulates body temperature?





3. What is the normal pH of human blood?





4. Which hormone regulates blood glucose by promoting cellular uptake?





5. What is the primary function of hemoglobin?





6. Which type of muscle is involuntary and striated?





7. Which organ secretes bile?





8. Which blood vessel carries oxygenated blood from lungs to heart?





9. The pacemaker of the heart is:





10. Which vitamin is essential for calcium absorption?





11. Which part of the nephron is responsible for filtration?





12. Which neurotransmitter is associated with muscle contraction?





13. The functional unit of the nervous system is:





14. What is the primary function of platelets?





15. Which gland is called the “master gland”?





16. The hormone secreted during “fight or flight” is:





17. Which part of the brain controls balance and coordination?





18. What is the normal human body temperature in Celsius?





19. Which structure prevents food from entering the trachea?





20. Red blood cells are formed in:





21. Which hormone regulates the sleep-wake cycle?





22. Which ion is necessary for muscle contraction?





23. The largest part of the human brain is:





24. Which blood group is the universal donor?





25. Which enzyme is present in saliva?





26. What is the normal human heart rate at rest?





27. Which organ is responsible for detoxifying harmful substances?





28. What is the main function of the large intestine?





29. The functional unit of the kidney is:





30. Which blood cells provide immunity?





31. Which part of the ear maintains balance?





32. Which vitamin is essential for blood clotting?





33. Which gas regulates breathing rate?





34. Which structure connects the throat to the stomach?





35. Which gland produces insulin?





36. The exchange of gases in the lungs takes place in:





37. Which hormone increases blood sugar levels?





38. The smallest functional unit of muscle is:





39. Which organ stores bile?





40. What type of blood circulation occurs between the heart and lungs?





41. Which part of the eye controls the amount of light entering?





42. What is the main energy currency of the cell?





43. Which organ produces digestive enzymes and hormones?





44. Which type of respiration requires oxygen?





45. The basic structural and functional unit of the lung is:





46. Which structure in the heart prevents backflow of blood?





47. Which part of the digestive system absorbs most nutrients?





48. Which mineral is essential for oxygen transport in blood?





49. Which gland secretes growth hormone?





50. What is the normal tidal volume of lungs in adults?





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