QuestionSBA
QuestionChoice
This is not the right option. This describes Poiseuille's law.
10026277
c
The resistance in a blood vessel is directly proportional to both the viscosity of blood and the length of the vessel, but inversely proportional to the radius of the vessel
QuestionChoice
This is not the right option. This describes the Frank-Starling law.
10026276
b
Increasing the left ventricular end-diastolic volume will stretch the myocytes, increasing their contractility, and hence giving a larger stroke volume
QuestionChoice
This is not the right option. This describes Ohm's law.
10026279
e
The flow through a blood vessel can be calculated by the pressure gradient divided by the vascular resistance
QuestionChoice
This is not the right option. This describes the law of Laplace.
10026278
d
The wall stress on a blood vessel is directly proportional to the blood pressure and vessel radius, but inversely proportional to the vessel wall thickness
QuestionChoice
This is correct. This effect is an essential function of the aorta. By stretching during systole and recoiling during diastole, the aorta maintains the pressure giving continuous flow despite rhythmic contractions of the heart.
10026275
a
The elastic wall of the aorta stretches during systole, allowing it to recoil during diastole to propel the blood forward and maintain blood pressure
Concept
Chapter
2693
3809
Structure and physiology of blood vessels
Topic
159
Cardiovascular physiology
17653
Which of the following describes the Windkessel effect?
a