Oxygen and Aerobic Metabolism Physiology Lab

The average person uses how many mL of oxygen per minute at rest?

200-250mL of oxygen per minute. This may increase to 2-3 L per minute during heavy exercise and to twice that amount in highly trained athletes.

What percentage of carbon dioxide is attached to hemoglobin and what percentage is dissolved?

30% is attached and 10% is dissolved.

What percent of oxygen is attached to hemoglobin and what percent is dissolved?

98% is attached and 2% is dissolved

What happens as oxygen is consumed and carbon dioxide is produced by muscle cells?

A pressure gradient is created between the cells, the interstitial fluid, and the bloodstream.

Carbon dioxide diffuses from...

Active cells where it is produced in high concentration to the interstitial fluid and bloodstream, where it is transported to the lungs mainly as bicarbonate.

Oxyhemoglobin dissociates more readily when?

As the oxygen concentration is lowered and the carbon dioxide concentration is increased.

What is the equation of aerobic cellular metabolism?

C6H12O6 + 6O2 -> 6CO2 + 6H2O + energy (heat or ATP)

How does carbon dioxide flow in the lungs?

From the bloodstream into the alveoli.

What is oxygen's role in aerobic cellular metabolism?

It facilitates the conversion of glucose, protein, and lipids into usable energy.

How do you find the amount of oxygen consumed per breath?

Oxygen concentration (%) x tidal volume (L)

A marked lowering of oxygen in interstitial fluid as it is used up by cells leads to..

Oxygen diffusion from the bloodstream.

How does the oxygen flow in the lungs?

Oxygen follows a pressure gradient from the alveoli into the bloodstream.

Compare the average tidal volumes for pre-exercise and post-exercise.

The post-exercise tidal volume was larger than the pre-exercise tidal volume.