Cardiac Output and Blood Pressure

Which does not describe cardiac output?

• It is determined by body size and aerobic fitness

• The amount of blood pumped by the heart each minute

• It is the amount of blood pumped out of the heart each beat

• It is the product of heart rate and stroke volume

What is stroke volume?

• the volume of oxygen transported in the blood

• the volume of blood pumped out of the heart each minute

• the volume of blood pumped out of the heart in each beat

• the number of beats per minute

What conduction system fires an impulse in order for the atria to contract?

• SA node

• AV node

• Bundle of his

• Purkinje Fibers

Identify the 3 occurrences during diastole or relaxation phase of cardiac cycle?

• Atrial-ventricular valves open

• Semi-lunar valves closed

• Pressure in ventricles is higher than atria

• Blood leaves atriums and fills the ventricles

Mr. Charles had his BP checked and the result is 110/70 mmHg. He then used the result in order to compute for the mean arterial pressure. Which of the following is the correct result of his computation of his MAP?

• 63.32 mmHg

• 73.32 mmHg

• 83.32 mmHg

• 93.32 mmHg

Work out the cardiac output of a performer who has a heartbeat of 170 bpm and a stroke volume of 70 ml.

• 10.9 liters per minute or 10,900ml per minute

• 13.9 liters per minute or 13,900ml per minute

• 11.9 liters per minute or 11,900ml per minute

• 9.9 liters per minute or 9,900ml per minute

Which of the following is applying the correct sequence of the heart’s electrical impulse?

• AV node → ventricles → SA node → AV bundle - Purkinje fibers → Atria

• SA node → ventricles → AV bundle - Purkinje fibers → AV node → Atria

• AV node → ventricles → AV bundle - Purkinje fibers → SA node → Atria

• SA node → Atria → AV node → AV bundle - Purkinje fibers → Ventricles

QRS complex signifies _____ depolarization and _____ repolarization.

• ventricular ; atrial

• atrial ; ventricular

• R ventricular ; L atrial

• L atrial ; R ventricular

Which of the following that could possibly increase the stroke volume? Tick all that apply.

• Preload or EDV

• Myosin and Actin Overlap

• Afterload

• Contractility

EDV is dependent on venous return of blood to the heart. The following are the factors that can increase the venous return to the heart, EXCEPT.

• Venoconstriction

• Skeletal muscle pump

• Cardiovascular pump

• Respiratory pump