Items or Characteristics That Are Chosen and Varied by the Researchers

question 44

Multiple Choice

Items or characteristics that are chosen and varied by the researchers and are often described as the cause of whatever response is measured are referred to as:

• A) variable.
• B) independent variable.
• C) dependent variable.
• D) value.

---

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.