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- 8. Explain the four stages of external respiration and identify the gradients (driving force) and resistance of each stage.8. Explain the four stages of external respiration and identify the gradients (driving force) and resistance of each stage. Answer like this - "the driving force of X is Y" The resistance of X is Z"7. All the following increase the rate of diffusion of gases through the respiratory membrane EXCEPT: (a) Surface area of respiratory membrane (b) Pressure gradient across the membrane (c) Thickness of the membrane (d) Temperature 8. All the following increase cause shift of O2 - HB dissociation curve to the right EXCEPT: (a) Increase temperature (b) Increase CO2 (c) Increase pH (d) Increase 2,3-diphosphoglycerate (2,3-DPG) 9. The powerful phagocytic blood cell is: (a) Eosinophil (b) Neutrophil (c) Lymphocyte (d) Monocyte 10. The pacemaker of the heart is: (a) The atrioventricular node (b) The sinoatrial node (c) The atrioventricular bundle (d) The bundle branches 11. Contractility of the heart is increased by: (a) Exercise (b) Parasympathetic stimulation (c) Bleeding (d) Heart failure 12. P-wave in electrocardiogram (ECG) means: (a) Ventricular contraction (b) Atrial contraction (c) Ventricular relaxation (d) Atrial relaxation 13. Which gastric gland secretes pepsinogen? (a) Mucus…
- Differentiate External from Internal respiration based on their: 1. Description 2. Location 3. Oxygen Diffusion 4. Oxygen Partial Pressure 5. Carbon Dioxide Diffusion 6. CARBON DIOXIDE PARTIAL PRESSURE 7. ACTIVE OR PASSIVE PROCESS? 8. MECHANICAL OR CHEMICAL PROCESS? 9. PRODUCTS5. What are the waste products of cellular respiration? 6. What is the difference between cellular respiration and breathing (respiration)?11. Which of the following statement is TRUE about oxygen transport? I. Oxygen diffuses down a pressure gradient from the lungs into the blood plasma to red blood cells binds to hemoglobin. II. Carbon dioxide diffuses down its partial pressure gradient from the tissues into the blood plasma and red blood cells to air in alveoli. 7% is dissolved plasma, 23% binds with hemoglobin to form carbaminohemoglobin and 70% is in bicarbonate form. IlII. Hemoglobin gives up its oxygen in tissues where partial pressure of oxygen is low, blood is warmer, partial pressure of carbon dioxide is higher and pH is lower; these four conditions occur in tissues with high metabolisms. A. I but not II B. I and II only C. I and III only D. II and III only 12. Mario is a change smoker. One day, he suffered from difficult breathing immediately he went to the hospital for a check-up. The findings of the doctor for Mario's condition was emphysema. Is the doctor correct of his findings? A. No, because difficult…
- 21. Oxygen moves from an area of higher concentration to an area of lesser concentration in the air sacs of the lungs through a process called Answers A. oxidation. B. cellular respiration. C. external respiration. D. internal respiration. Question22. Pharyngitis is inflammation of the Answers A. throat. B. voice box. C. windpipe. D. upper nose. Question23. Which of the following measures the volume and flow of air during inspiration and expiration? Answers A. sphygmomanometer B. spirometer C. stethoscope D. ventilator1. Why is nose breathing preferable to mouth breathing? 2. What is the specific protective function of the cilia in the trachea? 3. Which main bronchus is the most likely site for an inhaled object to become lodged? Why? 4. The lungs are mostly passageways and elastic tissue. What is the role of the passageways? Of the elastic tissue? 5. Which type of cellular transport moves respiratory gases between the blood and the body's cells? 6. What is cyanosis? 7. What chemical factor in blood normally provides the most powerful stimulus to breathe? Activ Go to2. Explain the role of other systems in the regulation of respiration?
- 2- Why are lungs normally stretched even during expiration?1. Which of the following gasses is needed aerobic respiration? C. nitrogen B. carbon dioxide 2. What gas is a by-product in aerobic respiration? B. carbon dioxide A. carbon D. oxygen C. nitrogen 3. Which of the following is a function of oxygen in aerobic respiration? A. carbon D. oxygen A. fuels the process of glycolysis. B. is needed to convert pyruvic to acetyl coenzyme A. C. is the final acceptor in the electron transport chain. D. is the gas needed to convert NADH to NAD in fermentation. 4. Which of the following is a product of fermentation in animal muscles? B. ethanol C. lactic acid 5. Which of the following processes uses bacteria to produce cheese? C. glycolysis D. Krebs cycle A. 02 D. FADH2 A. fermentation B. electron transport system 6. How many molecules of water are formed in one electron transport chain? D. 4 С. 3 В. 2 7. In alcohol fermentation, what comes after forming pyruvate? А. 1 A. decarboxylation B. ATP formation C. glycolysis D. chemiosmosis 8. To which complex…15. Why does oxygen move from the alveoli into the pulmonary capillary blood? 16. What structural characteristic of the alveoli makes them an ideal site for the diffusion of gases?