Paul's blood pressure is 150 / 90. The 150 indicates .. and...

Paul's blood pressure is $150 / 90$. The 150 indicates _________________ .. and the 90 indicates _____________ . a. pressure in the left ventricle; pressure in the right ventricle b. pressure during ventricular contraction; pressure during heart relaxation c. systemic circuit pressure; pulmonary circuit pressure d. pressure in the arteries; pressure in the veins

Paul's blood pressure is $150 / 90$. The 150 indicates _________________ .. and the 90 indicates _____________ .
a. pressure in the left ventricle; pressure in the right ventricle
b. pressure during ventricular contraction; pressure during heart relaxation
c. systemic circuit pressure; pulmonary circuit pressure
d. pressure in the arteries; pressure in the veins

Key Concepts

Diastolic Pressure

Diastolic pressure is the lower value recorded, representing the arterial pressure when the heart is at rest between beats (during ventricular diastole). It indicates the pressure in the arteries during heart relaxation and is crucial for understanding the resting load on the cardiovascular system.

Systolic Pressure

Systolic pressure refers to the highest pressure exerted in the arteries when the heart contracts during ventricular systole. This measurement reflects the force that the blood exerts on the arterial walls as it is pumped out of the heart, and it is a key indicator of cardiovascular function in clinical assessments.

Transcript

00:01 This question states that a particular person's blood pressure is 150 over 90.

00:08 The question asks us, what do each of these two values mean? so let's start by recalling quickly what blood pressure is.

00:18 So blood pressure is the systolic pressure over diastolic pressure.

00:34 And we'll also recall quickly that systolic pressure is measured during systole.

00:43 And this is the pumping of the ventricles of the heart.

00:49 Here i have a very crude drawing of a heart.

00:53 We have two ventricles in the bottom and two atria that i'm not drawing.

00:57 But as these ventricles contract, blood will be pumped out of the heart.

01:06 All right.

01:07 And then during diastole, this is the filling stage for the heart.

01:14 For the ventricles.

01:20 The ventricles will relax and blood will be, will fill the ventricles from the atria.

01:32 All right, so let's take a look at all of the options that this question gave us.

01:37 So recall, the blood pressure in this particular case is 150 over 90.

01:42 The first option that they offer us is that perhaps this stands for the pressure in the left ventricle, versus the pressure in the right ventricle.

01:52 So we know, if we know nothing else, is that we're dealing with pressure during pumping versus pressure during filling.

02:03 Both of these have to do with, well, we're not really sure because we're not sure when they're happening.

02:12 And so this answer doesn't really make any sense...

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