The Bohr effect a. is caused as hydrogen ions cause a 3D shape change in hemoglobin molecules. BOTH a and b d. BOTH a and b d. Taking a deep breath in, you expire into a balloon until you can fill the balloon no more with your breath. The balloon has a circumference of 75 centimeters at its widest diameter.
Bronchioles have a greater diameter than do bronchi.
True b. False 66. Pulmonary arteries contain a greater concentration of oxygen than do pulmonary veins. True b. False 67. Pulmonary capillaries are located within the walls of the alveoli. True b. False 68.