What is capacitance in the venous system primarily influenced by?
Understand the Problem
The question is asking about the factors that influence capacitance in the venous system, providing multiple-choice options to identify the primary influencing factor.
Answer
Adrenergic tone and venous compliance influence venous capacitance.
The final answer is that the capacitance in the venous system is primarily influenced by factors such as adrenergic tone and venous compliance.
Answer for screen readers
The final answer is that the capacitance in the venous system is primarily influenced by factors such as adrenergic tone and venous compliance.
More Information
Venous capacitance is crucial for maintaining the blood volume and pressure necessary to return blood to the heart efficiently. Adrenergic tone, part of the autonomic nervous system, affects how veins contract and expand, influencing their ability to hold blood.
Tips
Confusing venous capacitance with arterial blood pressure regulation. Venous capacitance specifically refers to the venous system's capacity to hold blood, which isn't directly about blood pressure.
Sources
- Blood Vessel Capacitance - an overview | ScienceDirect Topics - sciencedirect.com
- Venous return and mean systemic filling pressure - Critical Care - ccforum.biomedcentral.com
- Understanding basic vein physiology and venous blood pressure - journals.physiology.org
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