1. The top chambers of the heart are called the


2. Adrenalin, which is an excitatory Hormone is secreted by


3. The sex cells are made in the male testes and female ovaries of this system which enables human race to continue on .


4. The bone that protects the brain is called the


5. The main function of the kidney is


6. Red blood corpuscles are formed in the


7. Which of the following is a two joint muscle


8. Cardiac muscle tissue can be found in


9. Myopia is a disease connected with


10. A nerve cell is also called


11. Insulin is injected into the intestines by


12. Trachoma is a disease of the


13. The primary function of this system is to break down food into usable form and to remove waste products


14. Digestion begins in the


15. The human body system that includes these glands, thyroid, adrenals, and pancreas


16. Skin, hair , and nails are part of this system


17. Tiny air sacs at the ends of the bronchi tubes in the lungs


18. The part of the brain responsible for thinking and memory is the


19. The main organ in the respiratory system is the


20. Which of the following vitamins promote healthy functioning of eyes in human beings


21. The name of valve between left atrium and left ventricle is-


22. Which of the following pairs is incorrect?


23. Arteries, Veins, and capillaries are the _____________ in the circulatory system


24. Enzymes help in


25. Trypsin helps in the digestion of-