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Biology 2060 - Anatomy and Physiology II » Fall 2021 » Lab Quiz 4

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Question #1

Given the following data: • Mean Blood Pressure = 109 mmHg • Diastolic Blood Pressure = 82 mmHg • Pulse rate = 49 pulses/30seconds Calculate cardiac output.

A. 15.876L/min or 16L/min

B. CO = 31.752 L

Question #2

Given the following data: • Cardiac output = 4.29 L/min • Heart rate = 20 beats/20 seconds • Systolic blood pressure = 131 mmHg Calculate the Mean Blood Pressure

A. 4290={(20x3)x SV SV=4290/69= 71 =PPx2 => pp=71 / 2 =35.5 mmHg (36) PP=SBP-DBP -> 35.5=131-DBP ->DBP=131-36= 95mmHg MBP= 95+36/3= 95+12= 107 mmHg

B. 4290={(20x3)x SV SV=4290/69= 71 =PPx2 => pp=71 / 2 =35.5 mmHg (36) PP=SBP-DBP -> 35.5=131-DBP ->DBP=131-36= 95mmHg MBP= 95+36/3= 105+12= 127 mmHg

Question #3

Given the following data: • Cardiac output = 4870 mL/min • Heart rate = 87 beats/min • Systolic blood pressure = 129 mmHg Calculate the mean blood pressure.

A. CO=SV x HR 4870=87 x SV -> SV = 4870/87= 56 mmHg SV=PP x 2 -> PP=56/2 =28 PP=SBP -DBP -> 28=129 - DBP -> DBP= 129 - 28 = 101 mmHg MBP= 101 + 28/3= 110 mmHg

B. CO=SV x HR 4870=87 x SV -> SV = 4870/87= 56 mmHg SV=PP x 2 -> PP=56/2 =28 PP=SBP -DBP -> 28=129 - DBP -> DBP= 119 - 38 = 81 mmHg MBP= 101 + 28/3= 110 mmHg

Question #4

The QRS interval represents

A. The time required for the ventricule and the atria to depolarize

B. The time required for atria to depolarize

C. The time required for the heart to depolarize

D. The time required for the ventricule to depolarize

Question #5

In response to hypertrophy of the left ventricle, you will expect the QRS complex to be

A. Smaller

B. Larger

C. Not related

D. Stay the same

Question #6

What are specific causes of the 2 sounds heard during a heatbeat?

A. Closure of the atrioventricular valves

B. Closure of the atrioventricular and semilunar valves

C. Closure of the semilunar valves

Question #7

An increase in heart rate would cause the P-P Interval distance to:

A. Increase

B. Stay the same

C. Decrease

Question #8

If the PP interval is measured 20 mm. What is the Heart Rate?

A. 75 contractions / minute

B. 75 contractions/day

C. 20 contractions / minutes

D. 150 contractions / minute

Question #9

What represents the Qt interval?

A. Time for the depolarization and repolarization of atria

B. Time for the depolarization and repolarization of ventricles

Question #10

If the heart rate decreases, what would happen to the TP interval?

A. stays the same

B. nothing will happen

C. increase

D. decreases

Question #11

What represents the P wave?

A. ventricle depolarization

B. Atrial depolarization

Question #12

Formula of stroke volume =

A. SV= PP x 5 mL/beat

B. SV= PP x 2 mL/beat

Question #13

What represents the TP interval?

A. The time of electrical inactivity between ventricles

B. The time of electrical inactivity between cardiac cycles

C. The time of electrical inactivity between atria

D. The time of electrical activity between cardiac cycles

Question #14

At what point in the ECG would you expect ventricular volume to be the least?

A. Just before the QRS complex

B. Just after the T wave

C. Just before the P wave

D. Just afer the P wave

Question #15

Mark ran 8 kilometers. Prior to running, he had the following: • Heart rate = 68 beats/min • Systolic blood pressure = 137 mmHg • Diastolic blood pressure = 71 mmHg After running, he had the following: • Heart rate = 113 beats/min • Systolic blood pressure = 162 mmHg • Diastolic blood pressure = 85 mmHg Calculate his percent change in cardiac output

A. 94%

B. 90%

C. 5%

Question #16

Christine swam 1500 yards. Prior to swimming, she had the following: • Heart rate = 59 beats/min • Systolic blood pressure = 99 mmHg • Diastolic blood pressure = 71 mmHg After swimming she had the following: • Heart rate = 107 beats/min • Systolic blood pressure = 141 mmHg • Diastolic blood pressure = 92 mmHg Calculate her percent change in Cardiac Output.

A. COR = HR x SV (PPx2) = HR x {(SBP-DBP) x 2} = 59 x {(99-71)x 2}= 59 x {28 x 2}= 59 x 59 = 3333 mL/min COE = HR x SV (PPx2) = HR x {(SBP-DBP) x 2} = 107 x {(141-92) x 2} =10486 mL/min %D = COE-COR/COR x 100 = (10486-3333) / 3333}x 100= 297%

B. COR = HR x SV (PPx2) = HR x {(SBP-DBP) x 2} = 59 x {(99-71)x 2}= 59 x {28 x 2}= 59 x 56 = 3304 mL/min COE = HR x SV (PPx2) = HR x {(SBP-DBP) x 2} = 107 x {(141-92) x 2} =10486 mL/min %D = COE-COR/COR x 100 = (10486-3304) / 3304}x 100= 217%

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