Vascular resistance

Definition

Vascular resistance is the force that opposes the flow of blood through the circulatory system. It is a critical factor in determining blood pressure and can be influenced by various physiological and pathological conditions.

5 Must Know Facts For Your Next Test

1. Vascular resistance affects oxygen delivery to tissues, including the lungs.
2. Changes in vascular resistance can influence pulmonary hypertension.
3. Nutritional deficiencies can alter vascular resistance by affecting blood vessel integrity and function.
4. Electrolyte imbalances, such as those involving sodium or potassium, can impact vascular resistance.
5. Obesity increases vascular resistance due to added stress on blood vessels.

Review Questions

• How does vascular resistance influence pulmonary hypertension?
• What role do electrolytes play in regulating vascular resistance?
• Why might obesity lead to increased vascular resistance?

Related terms

Pulmonary Hypertension: Increased pressure in the pulmonary arteries caused by narrowed or blocked vessels.

Electrolyte Imbalance: Disruption in the levels of essential minerals like sodium and potassium that affect bodily functions.

Blood Pressure: The force exerted by circulating blood on the walls of blood vessels, influenced by cardiac output and vascular resistance.