Question

QUESTION 1

1. If a person had an end diastolic volume (EDV) of 100mL and a end systolic volume (ESV) of 200mL, what would their stroke volume be?

   	A.	300mL
   	B.	100mL
   	C.	30,000mL
   	D.	2mL
   	E.	None of the above

1 points   

QUESTION 2

1. During ventricular ejection, the semilunar valves are open and the AV valves are closed.

   True

   False

0.5 points   

QUESTION 3

1. During which stage of the cardiac cycle is the blood pressure in the aorta the highest?

   	A.	Atrial contraction and ventricular filling
   	B.	Isovolumetric contraction
   	C.	Ventricular ejection
   	D.	Isovolumetric relaxation
   	E.	Atrial relaxation and ventricular filling

1 points   

QUESTION 4

1. The QRS complex on an ECG (electrocardiogram) represents what event of the cardiac cycle?

   	A.	Atrial depolarization
   	B.	Atrial repolarization
   	C.	Ventricular depolarization
   	D.	Ventricular repolarization

1 points   

QUESTION 5

1. The P-wave on a ECG (electrocardiogram) represents atrial repolarization.

   True

   False

0.5 points   

QUESTION 6

1. If a person had a stroke volume of 100mL/beat, and a heart rate of 60beats/min (60BPM), what would their cardiac output (CO) be?

   	A.	600mL/min
   	B.	1.6mL/beat
   	C.	40mL/beat
   	D.	600mL/beat

Answer 1

Question 1:

Answer - (E) none of the above.

Because, stroke volume = ( end diastolic volume - end systolic volume )

So, SV = ( 100 - 200) mL

= - 100 mL

Question 2 : This is true.

During ventricular ejection semilunar valves are open and the AV valves are closed .

Question 3 :

Answer - ( D)  

Because at this time all the blood are ejected in the aorta from the left ventricle.

Question 4 :

Answer - ( C)  

QRS complex indicate the rapid depolarization of ventricles

Question 5 :

This is false.

Because P wave represent the depolarization of the atria.

Question 6 :

Cardiac output = Heart rate X stroke volume.

So, cardiac output = 60 X 100

= 6000 mL/ min