Which of the following is incorrect? a. Hemoglobin transports oxygen through the blood from the lungs to the tissues Ob. None; all the other choices are correct c. Hemoglobin transports H* through the blood from the tissues to the lungs Od. Lower pH increases hemoglobin's O₂-binding affinity

In sickle cell disease: O poor oxygen binding causes deformation of red blood cells a mutation in the B-chain of hemoglobin causes hemoglobin to polymerize into fibres that distort red blood cells. O the oxygen binding curve of hemoglobin must be shifted to the left hemoglobin is no longer able to bind oxygen myoglobin is not longer able to bind BPG.

Which one of the following is NOT a function of the respiratory system? O A. Speech and sound generation O B. Exchanges oxygen and carbon dioxide between the air and the blood O C. Protection against inhaled microorganisms O D. Filters inhaled particulate matter E. Changes blood pH by changing oxygen levels

O2 bound to hemoglobin:   a. acts the same as physically dissolved oxygen   b. Comes off the hemoglobin (dissociates) more easily as you increase the oxygen partial pressure   c. exerts a partial pressure    d. Comes off the hemoglobin (dissociates) more easily as you increase the acidity (decrease the pH)   e. all the options are correct   2. Air convection in mammals is driven by a smaller pressure gradient than blood convection because:   a. Bronchioles have a greater resistance to flow than arterioles   b. bronchioles tend to have a smaller radius than arterioles and capillaries   c. air is easier to move with pressure gradients than blood    d. air generally travels farther in your body than does blood   e. air is heavier than blood 3. The rate of diffusion of gases is NOT determined by which of the following?   a. The area of the surface across which diffusion is occurring    b. The mechanical energy…

in arterial and venous blood in the pulmonary circulation is The partial pressures of O A. Carbon dioxide, 46 mmHg, 40 mmHg O B. Carbon dioxide, 40 mmHg, 46 mmHg O C. Oxygen, 100 mmHg, 140 mmHg O D.Oxygen, 100 mmHg, 150 mmHg E. Oxygen, 140 mmHg, 100 mmHg and respectively.

The increased ventilation that occurs due to decreased arterial pH (= increased hydrogen ion) is mediated through the:   a. peripheral chemoreceptors   b. central chemoreceptors   c. both of the above   d. none of the above

Carbon dioxide is mostly transported in the blooda. dissolved in plasma.b. bound to blood proteins.c. within HCO3−.d. bound to the heme portion of hemoglobin.e. bound to the globin portion of hemoglobin.