$1.$ Bar$-$headed geese that migrate over Mt$.$ Everest have which of the following physiological adaptations? a$.$ Reduced lung size b$.$ Hemoglobin with very high affinity for oxygen c$.$ Fewer mitochondria in cells d$.$ Fewer capillaries in flight muscles $2.$ Inflation of the lungs at inspiration occurs when: a$.$ The atmospheric pressure increases to force air into the alveolar space b$.$ The diaphragm contracts which increases the air pressure in the bronchioles c$.$ Contraction of the diaphragm pushes on the lungs, causing them to inflate d$.$ Contraction of the diaphragm expands the thoracic cavity and decreases the air pressure inside the lungs $3.$ At the systemic capillaries: a$.$ The partial pressure of oxygen is greater in the capillaries compared to the tissue cells b$.$ The partial pressure of oxygen is less in the capillaries compared to the tissue cells c$.$ The partial pressure of oxygen is equal in the capillaries and the tissue cells d$.$ The partial pressure of oxygen is not important because the partial pressure of carbon dioxide drives the loading and unloading of hemoglobin $4.$ The loading and unloading of hemoglobin is regulated by: a$.$ Krogh$$s principle b$.$ Boyle$$s Law c$.$ The law of mass action d$.$ The osmotic pressure gradient $5.$ Large terrestrial animals have evolved which of the following adaptations to maximize oxygen delivery to their tissues: a$.$ Countercurrent air flow in the lungs b$.$ Large surface area for gas diffusion c$.$ Dissolving the oxygen in fluid so that it is present at a higher concentration d$.$ Few systemic capillaries in the tissues $6.$ The partial pressure of oxygen at the peak of Pikes Peak in Colorado is $93$mm Hg$.$ What the atmospheric pressure at the peak of Pikes Peak? a$.20$ mm Hg b$.442$ mmHg c$.160$ mm Hg d$.760$ mm Hg