Chapter 14, Problem 1E

Summary Introduction

Introduction:

Peripheral resistance can be defined as the arteries resistance to the flow of blood. The resistance shown by the systemic circulation is also known as the systemic vascular resistance or SVR. It is also named as total peripheral resistance or TPR.

Answer to Problem 1E

Solution:

The correct answer is the option (c) the combined resistance of all organs in the systemic circuit.

Explanation of Solution

Explanation/justification for the correct answer:

The correct is option (c). The combined resistance of all organs in the systemic circuit. The systemic circuit referred to the part of the circulatory system carries the blood away from your heart. It delivers it to the body organs and tissue and returns back to the heart again. The systemic circuit is different from the pulmonary circuit, that conducts blood between the heart and lungs. Hence, the option (c) is correct.

Explanation for incorrect answer:

Option (a) The combined resistance of all organs in the body. It happens in the systemic circuit in the TPR. Hence, the option (a) is incorrect.

Option (b) The resistance of capillaries located in distal body parts. When the vascular disease leads to the stiffening of arteries, compliance gets reduced and there is an increase in resistance to blood flow. Hence, the option (b) is incorrect.

Option (d) The combined resistance of all the blood vessels within an organ or tissue. It does not occur in TPR. Hence, the option (d) is incorrect.

Option (e) The resistance to blood flow through the heart. Due to the increase in resistance in the arterial system, the blood pressure increases and flow decreases. Hence, the option (e) is incorrect.

Conclusion

Thus, the systemic circuit conducts blood between the heart and all organs. Hence, the option (c) is correct.