BIO 202-Assignment 3 Verified Questions With Answers

BIO 202-Assignment 3 Verified Questions With Answers What is the layer of the pleural membrane that is attached to the surface of the lung? - ANSWER visceral pleura What is the outermost layer of the pleural membrane? - ANSWER Parietal pleura What is the fluid filled area between the pleural layers called? - ANSWER Pleural cavity The pleural membranes function like a fluid filled balloon that completely surrounds the heart. - ANSWER false What determines the direction of gas movement? - ANSWER The partial pressure differences Which of the following statements about partial pressures of gases in the lungs is true? - ANSWER Po2 in the lungs Po2 in the blood; Pco2 in the lungs Pco2 in the blood Which of the following statements about partial pressures of gases in the tissues is true? - ANSWER Po2 in blood Po2 in tissues; Pco2 in blood Pco2 in tissues Oxygen-rich blood is carried through pulmonary arteries from the lungs to the heart. - ANSWER false Oxygen-poor blood is carried through systemic veins from the body tissues back to the heart. - ANSWER true Which of the following is true at the arterial ends of the pulmonary capillaries? - ANSWER The Po2 is lower in the capillaries than in the alveoli. Which of the following is true at the venous ends of the pulmonary capillaries? - ANSWER The Pco2 is equal in the capillaries and in the alveoli. At the arterial end of a tissue capillary, rank the following structures from highest to lowest Po2. - ANSWER Capillaries, tissue fluid, cells When partial pressures for a given gas are equal between the capillaries and the tissue fluids, no net movement of that gas occurs. - ANSWE