What is the partial pressure of carbon dioxide in venous blood is approximately?

Question

What is the partial pressure of carbon dioxide in venous blood is approximately? a. 40 mm Hg. b. 45 mm Hg c. 50 mm Hg. d.70 mm Hg. . Which of the following best describes the respiratory membrane? a. Respiratory bronchioles and alveolar ducts b. Alveolar and capillary walls and their fused basement membranes c. Atria and alveolar sacs d. Respiratory bronchioles and alveolar sacs TRUE/FALSE 10. The visceral pleura line the surface of the lungs and parietal inner surface of chest wall. 11. Internal respiration is gas exchange at the level of the working tissue. 12. The bronchial circulation is a component of the pulmonary circulation. 13. Smoking diminishes ciliary action of respiratory epithelium. 14. When the diaphragm relaxes, it flattens and volume of the thoracic cage increases. 15. The majority of oxygen transported in the blood is in the form of oxyhemoglobin 16. An increase in the partial pressure of oxygen causes pulmonary arterioles to thereby alteringt to make gas exchange more efficient a. Constrict; perfusion b. Dilate; perfusion c. Constrict; ventilation d. Dilate; ventilation 17. With the Bohr Effect, more oxygen is released because a (n) a. Decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond b. Decrease in pH (acidosis) weakens the hemoglobin-oxygen bond c. Increase in pH (alkalosis) strengthens the hemoglobin-oxygen bond d. Increase in pH (alkalosis) weakens the hemoglobin-oxygen bond

Explanation / Answer

8. What is the partial pressure of carbon dioxide in venous blood

It is apprx. 50 mmHg

9. Respiratory membrane includes

Alveolar and capillary walls and their fused membrane

10. The visceral pleura line the lungs and the parietal inner urface of chest wall.

True.

11. Internal respiration is the gas exchange between the blood and the working tissue.

True.

12. The bronchial circulation is the part of pulmonary circulation.

False.

The brochial circulation is the circulation of lungs while the pulmonary circulation is the blood carrying to and from the heart by the pulmknary arteries and veins.

13. Smoking diminishes the ciliary action of epithelium

True.

14. When diaphragm relax ,it flattens and increases the volume of thoracic cage

False. It happens on contraction of diaphragm

15. The majority of oxygen transported in the blood is in the form of oxyhaemoglobin.

True.

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