What Is a Variable

question 7

Multiple Choice

What is a variable?

• A) an exact listing of steps a researcher takes when collecting data
• B) a factor that does not change and remains consistent
• C) an element that the experimenter expects to change
• D) an observation that has been replicated many times with the same result

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Definitions:

Peripheral Resistance

The resistance to blood flow in the circulatory system, primarily determined by the diameter and elasticity of blood vessels.

Hematocrit

Hematocrit is a measure of the volume percentage of red blood cells in the blood, used in diagnosing and monitoring various medical conditions.

Blood Viscosity

A measurement of the resistance of blood to flow, which can affect blood pressure and circulation, influenced by factors such as hematocrit and plasma protein levels.

Respiratory Pump

A mechanism involving the muscles of the thorax and abdomen, which helps in moving air in and out of the lungs during breathing.