Exam 42: Circulation and Gas Exchange

At sea level, atmospheric pressure is 760 mm Hg. Oxygen gas is approximately 21% of the total gases in the atmosphere, so the approximate partial pressure of oxygen is

Cyanide poisons mitochondria by blocking the final step in the electron transport chain. Human red blood cells placed in an isotonic solution containing cyanide are likely to

The diagnosis of hypertension in adults is based on the

At the summit of a high mountain, the atmospheric pressure is 380 mm Hg. If the atmosphere is still composed of 21% oxygen, then the partial pressure of oxygen at this altitude is

During most daily activities, the human respiration rate is most closely linked to the blood levels of

Breathing is usually regulated by

Most of the carbon dioxide produced by humans is

The sun shining on a tidal pool during a hot day heats the water. As some water evaporates, the pool becomes saltier, causing

A person with a tidal volume of 450 mL, a vital capacity of 4,000 mL, and a residual volume of 1,000 mL would have a potential total lung capacity of

What will be the long-term effect of blocking the lymphatic vessels associated with a capillary bed?

The meshwork that forms the fabric of a blood clot is

Countercurrent exchange is evident in

In a healthy human, the typical life span of a red blood cell is

In an animal species known for endurance running rather than fast sprinting, you would expect to find

Carbon dioxide levels in the blood and cerebrospinal fluid affect its pH. This enables the organism to sense a disturbance in gas levels as

Gas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because

Air-breathing insects carry out gas exchange

Flying insects do all of the following except

The set of blood vessels with the lowest blood pressure driving flow is

Dialysis patients, who will have blood withdrawn, dialyzed, then replaced, are always weighed when they enter the facility and then weighed carefully again before they leave, because