Blood pressure is the force exerted by circulating blood against blood vessel walls.
Mean arterial pressure is approximately determined by Cardiac Output and Systemic Vascular Resistance.
- Increasing cardiac output generally increases arterial pressure, all else being equal.
- Increasing systemic vascular resistance generally increases arterial pressure, all else being equal.
Dehydration and Blood Loss can reduce circulating blood volume, potentially reducing venous return, cardiac output, and blood pressure.
Flashcards
What two variables primarily determine mean arterial pressure?01-foundations / anatomy-physiology / cardiovascular
Answer
Cardiac output and systemic vascular resistance.
How might dehydration reduce blood pressure?02-mechanisms / anatomy-physiology / cardiovascular
Answer
Lower blood volume can reduce venous return and cardiac output.