Question

Name the two main factors that affect the blood pressure.

• A. Blood flow into the heart and contractility of the cardiac muscle
• B. Cardiac output and fluidity of the blood
• C. Cardiac output and total peripheral resistance
• D. Blood flow into the heart and total peripheral resistance

Hint:

$BP = CO \times TPR$. Just remember the formula!

Answer 1

The Correct Option is C

Step 1: Concept
Blood pressure is the force exerted by circulating blood against the walls of the body's arteries.

Step 2: Meaning
It is mathematically defined by the relationship between the volume of blood pumped and the resistance it encounters.

Step 3: Analysis
The primary equation for blood pressure is $BP = CO \times TPR$. Cardiac output ($CO$) is the volume of blood pumped per minute, and total peripheral resistance ($TPR$) is the resistance in the circulatory system.

Step 4: Conclusion
Therefore, Cardiac output and total peripheral resistance are the two main determining factors of blood pressure.

Final Answer: (C)