18 Questions
What determines venous return (VR)?
Right atrial pressure (RAP)
What does an increase in RAP cause in venous return (VR)?
Decrease
What is the driving pressure for blood into the right atrium?
Mean systemic filling pressure (MSFP)
What shifts the match between cardiac output (CO) and venous return (VR)?
Increase in mean systemic filling pressure (MSFP)
Which curve shows the relationship between venous return and right atrial pressure?
Vascular function curve
What is the main physiological effect of Natriuretic Peptides on blood vessels?
Causing diuresis and natriuresis
At steady state, what is equal to each other?
Venous return (VR) and mean systemic filling pressure (MSFP)
Which receptor type is the predominant receptor on blood vessels for Natriuretic Peptides?
Receptor type A
In the context of venous return and cardiac output, what does VR stand for?
Venous Return
Which of the following hormones promotes diuresis and natriuresis?
ANP
What is the primary effect of Natriuretic Peptides on smooth muscle cells?
Initiating cell relaxation
Which of the following terms describes the pressure in the right atrium during diastole?
(RAP) Right Atrial Pressure
What does the Mean circulatory Pressure (MCP) represent?
The theoretical pressure when venous return or cardiac output is zero
How do changes in blood volume and venous compliance affect the vascular function curve?
They cause parallel shifts in the curve
Which factor alters the slope of the systemic function curves without changing Mean circulatory filling pressure (MSFP)?
Changes in systemic vascular resistance (SVR)
What happens to right atrial pressure (PRA) when cardiac output increases?
PRA decreases
Which vessel carries the highest percentage of blood volume according to the text?
Systemic venous system
What does a change in systemic vascular resistance (SVR) primarily impact?
Venous Return
This quiz covers the concept of Right Atrial Pressure (RAP) in cardiovascular physiology, including its significance, typical range, and relationship to central venous pressure. Understanding RAP is crucial for grasping the driving pressure for venous return in the cardiovascular system.
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