Welcome to your Human Respiratory System (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. The number of gills present in Osteichthyes is ______ 10 pairs 12 pairs 2 Pairs 5 pairs 2. The nostrils lead to the pharynx mouth larynx trachea 3. The voice box is also called mouth trachea larynx pharynx 4. Pulmonary ventilation movements are due to _______ Costal muscles Wall of lungs Diaphragm Costal muscles and diaphragm 5. RQ is _____________ Ratio of CO2 produced to O2 consumed Ratio of CO2 produced to substrate consumed Ratio of oxygen consumed to CO2 produced Ratio of oxygen consumed to water produced 6. Which of the following does not belong to conducting portion of the respiratory system? Alveoli Pharynx Nose Bronchioles 7. The oxygen toxicity is related to ______ Collapsing of the alveolar wall Blood poisoning Failure of ventilation of lungs Improper functioning of alveoli 8. What is the name of the gland which secrete melatonin? Thyroid gland Pituitary gland Hypothalamus Pineal gland 9. Which of the following is the product of the Krebs cycle? All of the mentioned FADH NADH ATP 10. Partial pressure of oxygen in lungs is __________ 100 mm Hg 110 mm Hg 40 mm Hg 60 mm Hg 11. The structure which closes of larynx is ________ Adam’s apple Epiglottis Vocal cords Glottis 12. Which of the following Produces maximum ATP? Fermentation Glycolysis Krebs cycle Oxidative Phosphorylation 13. Which of the following controls the normal breathing process? Cholesterol Dorsal respiratory group Amino acids Ventral respiratory group 14. Hyaline cartilage has a primary function of ___________ Protect thyroid Connect conchae Increase the surface area Support trachea 15. Which of the following is NOT the function of the respiratory system? Helps in gaseous exchange Protection against blood loss Contains receptors for the sense of smell Regulate blood pH 16. Where does the internal respiration take place cells lungs nostrils trachea 17. Oxygen and hemoglobin bind in a reversible manner to form______ BPG Carboxyhemoglobin Methoglobin Oxyhemoglobin 18. The site of respiration inside the lungs are _____ Diaphragm Bronchioles Alveoli Bronchi 19. Which of the following communicates with the external atmosphere to remove carbon (IV) oxide from the body lungs bronchi trachea alveoli 20. Respiration is controlled by ______ Cerebrum Medulla oblongata Hypothalamus Cerebellum 1 out of 20 Time is Up! Time's up