cardiac cycle Flashcards
1
Q
What is systole?
A
contraction of the heart chamber
2
Q
What is diastole?
A
relaxation of the heart chamber
3
Q
What is the aortic valve doing during ventricular systole?
A
the aortic valve is open
4
Q
What is the aortic valve doing during ventricular diastole?
A
the aortic valve is closed
5
Q
What do blood pressure cuffs measure?
A
the force of blood in vessels
6
Q
When is the force of blood the greatest?
A
during systole
7
Q
What is the average blood pressure?
A
120/80
8
Q
What tool is used to measure blood pressure?
A
blood pressure cuffs, sphygomomanometer
9
Q
What systolic pressure is considered dangerous?
A
higher than 180
10
Q
What 4 factors can affect blood pressure?
A
cardiac output, blood volume (5 liters avg.), blood viscosity, peripheral resistance
