PQ 8.3 CARDIOVASCULAR DYNAMICS

What is the volume of blood pumped out of the left ventricle in one minute called?

• Cardiac volume

• Heart rate

• Stroke volume

• Cardiac output

What is the amount of blood that is ejected from the left ventricle in a single beat called?

• Left ventricular end-diastolic volume

• Stroke volume

• Cardiac output

• Left ventricular end-systolic volume

What is the proportion of blood that is ejected from the left ventricle during a single heartbeat called?

• Ejection fraction

• Cardiac output

• Stroke volume

• Heart rate

What is the number of times the heart contracts in a minute called?

• Stroke volume

• Cardiac output

• Ejection fraction

• Heart rate

What is the maximum pressure observed in the arteries during the contraction phase of the ventricle called?

• Blood pressure

• Cardiac cycle

• Systolic blood pressure

• Diastolic blood pressure

What is the minimum pressure observed in the arteries during the relaxation phase of the ventricle called?

• Cardiac cycle

• Blood pressure

• Diastolic blood pressure

• Systolic blood pressure

What is the force exerted by the blood against the walls of the arteries and other vascular vessels called?

• Blood pressure

• Cardiac cycle

• Systolic blood pressure

• Diastolic blood pressure

What is the phenomenon called where blood pressure drops below normal resting values following exercise?

• Cardiac output

• Hypertension

• Cardiovascular drift

• Post-exercise hypotension

What is the increase in the delivery of O2 achieved in two ways during exercise?

• Increase in blood pressure and redistribution of blood flow

• Increase in cardiac output and redistribution of blood flow

• Increase in cardiac output and increase in heart rate

• Increase in heart rate and redistribution of blood flow

What is the only organ system in the human body where blood flow distribution remains unaltered during exercise?

• Lungs

• Heart

• Kidneys

• Brain