While on vacation in the Caribbean, your snorkeling instructor advises you to take several deep breaths before diving down below the surface. He tells you that doing this will load extra oxygen into your blood. Why is your instructor incorrect regarding his knowledge of respiratory physiology? (+1) Why would hyperventilating help reduce the urge to breath? (+2)

The pointer indicates a…

The additional air a person can take in after normal inhalation is the _____. fill in the blank with a lung capacity. (R9)

In a normal individual, ventilation rates are primarily regulated by …. (R16)

The serous membrane around the lung. (R3)

As carbon dioxide levels rise in the blood, pH __. (R13)

The ____ is the opening into the larynx. (R3)

Which is not a consequence of hydrogen ion secretion: (U10)

Potassium imbalances can cause heart dysrhythmias (B7)

Gas exchange between the atmosphere and tissues is necessary because of cellular respiration. (R1)