Q31. The outside layer of skin is called _____.
Q32. Which acid is secreted by stomach?
Q33. What is the strongest muscle in the human body?
Q34. What is the average blood clotting time of human beings?
Ans- 2 – 5 minutes.
Q35. What is the mixed gland of the human body?
Q36. Who was invented human blood grouping system?
Ans- Carl Landsteiner.
Q37. Which one of the following is a female sex hormone?
Q38. Which of the antibodies formed?
Ans- Plasma cells.
Q39. In the human body which body part has most bones?
Q40. The urinary system consists of the___.
Ans- kidneys, ureters, bladder, and urethra.