Ch 3.3 - Cardiac Output

What is the definition of heart rate?

• The total volume of blood expelled from the heart per minute

• The amount of blood and oxygen that can be transported to the working muscles by the heart

• The volume of blood ejected from the heart every time it contracts

• The number of times the heartbeats per minute

How can an athlete estimate their maximum heart rate?

• By measuring the size of their ventricles

• By determining their stroke volume

• By using the equation 220 minus their age

• By calculating their cardiac output

What is stroke volume determined by?

• The size of the heart chambers and the strength of the cardiac muscle

• The number of times the heartbeats per minute

• The amount of blood and oxygen transported to the working muscles

• The total volume of blood expelled from the heart per minute

What is the formula to calculate cardiac output?

• Heart rate multiplied by the number of times the heartbeats per minute

• Stroke volume multiplied by the number of times the heartbeats per minute

• Heart rate multiplied by stroke volume

• The total volume of blood expelled from the heart per minute multiplied by the number of times the heartbeats per minute

What is the effect of long-term exercise on stroke volume?

• It increases stroke volume

• It has no effect on stroke volume

• It reduces the size of the ventricles

• It decreases stroke volume

What is the unit of measurement for cardiac output?

• Beats per minute

• Milliliters per beat

• Milliliters per minute

• Liters per minute

What happens to heart rate during exercise?

• It increases

• It remains the same

• It decreases

• It stops beating

What is the purpose of examining heart rate, stroke volume, and cardiac output?

• To calculate the maximum heart rate

• To determine the size of the ventricles

• To measure the amount of blood and oxygen in the body

• To improve cardiovascular fitness

What is the ability to work for long periods of time without tiring called?

• Stroke volume

• Heart rate

• Stamina

• Cardiac output

What is the effect of exercise on blood and oxygen delivery?

• It stops blood and oxygen delivery

• It decreases blood and oxygen delivery

• It increases blood and oxygen delivery

• It has no effect on blood and oxygen delivery