BIOM 513 Physiology Exam 4 - Liberty University

 Question 1 1 out of 1 points Type II alveolar cells Selected Answer: secrete a chemical known as surfactant. Correct Answer: secrete a chemical known as surfactant.  Question 2 1 out of 1 points Excess fluid in the lungs will Selected Answer: decrease diffusion due to increased distance. Correct Answer: decrease diffusion due to increased distance.  Question 3 1 out of 1 points Which of the following characteristics makes hemoglobin's structure such a good match for its function as an oxygen carrier? Selected Answer: Each hemoglobin molecule can bind four oxygen molecules. Correct Answer: BIOM 513 Physiology Exam 4 - Liberty University Each hemoglobin molecule can bind four oxygen molecules.  Question 4 1 out of 1 points The law that describes the factors that affect flow is best stated Selected Answer: R Lη/r 4 Correct Answer: R Lη/r 4  Question 5 1 out of 1 points According to the law of LaPlace, when comparing two alveoli lined with fluid, pressure in the one with the ________ diameter will be greater. Selected Answer: small er Correct Answer: small er  Question 6 1 out of 1 points The partial pressure of carbon dioxide in the cells of peripheral tissues is approximately ________ mm Hg. Selected Answer: 4 5 Correct Answer: 4 5  Question 7 0 out of 1 points Blood vessels cover approximately ________% of the alveolar surface. Selected Answer: 90 Correct Answer: 80- 90  Question 8 0 out of 1 points Alveolar ventilation refers to the Selected Answer: movement of air into and out of the lungs. Correct Answer: movement of air into and out of the alveoli.  Question 9 0 out of 1 points Which of the following features of the alveolar sacs allows for the ease of diffusion of gasses? Selected Answer: Type II alveolar cells secrete surfactant. Correct Answer: