Exam 18: Clearing the Air: Respiratory Cardiovascular and Excretory Systems

Valuable substances in filtrate are returned to the blood through what process?

Why is carbon monoxide deadly?

Which respiratory organ is most often found only in fully aquatic animals?

What is the order of passage as air is inhaled into the human lungs?

The functional units of the kidneys are called ________.

Some athletes use "blood doping," adding additional red blood cells to the blood, to achieve a competitive edge. The extra red blood cells will

The contraction phase of the cardiac cycle is known as

What is one consequence of long-term exposure to carbon monoxide, found in environmental tobacco smoke?

________ is the chemical in tobacco smoke that's able to activate the brain's reward pathways, thus making smoking a very addictive process.