Cardiac Output and Blood Pressure

Cardiac output increases during exercise.

• True
• False

Tags

NGSS.HS-LS1-3

A person who has lost 500 ml of blood will have a higher preload compared to a person with normal blood volume.

• True
• False

Tags

NGSS.HS-LS1-3

The term afterload is defined as

• volume of blood in the ventricles

• volume of blood in the atria during diastole

• resistance to blood flow out of the ventricle during systole

• pressure of left ventricle during diastole

Cardiac output is affected by

• age/ gender/ body size

• oxygen demand of body

• viscosity of blood

Which of the following causes an increase in cardiac output?

• Increase in contractility and decreased in preload

• increase in afterload

• increase in both contractility and preload

• increased in preload and decrease in contractility

Calculate the Cardiac output

SV= 70 ml/beat

HR = 75 beats/min

• 5 L/min

• 5.25 L/min

• 5.5 L/min

• 5.35 L/min

Tags

NGSS.HS-LS1-3

Conditions that reduce cardiac output include

• eating

• heart disease

• standing from lying position

• adrenaline

Tags

NGSS.HS-LS1-3

Where does the blood flow due to gravity?

• upper extremities to superior vena cava

• upper extremities to inferior vena cava

• upper extremities to pulmonary artery

• upper extremities to pulmonary vein

The most important force in venous flow is

• cardiac suction

• the pressure generated by the heart.

• the skeletal muscle pump.

• the thoracic (respiratory) pump.

• one way flow due to valves.

If heart rate increases to 180 beats/min (which is very fast) from the original 70 beats/min and stroke volume remains 70mL/beat the cardiac output increases from 4.9L/min to

• 12,600 mL/minute

• 12.6 L/min

• 13 mL/sec

• 13 mL/hr