Cardiac Cycle Review

What is one complete heartbeat called?

• Cardiac arrest

• Cardiac cycle

• Heart failure

• Heart rhythm

What is the term used to describe the contraction of a heart chamber?

• Diastole

• Systole

• Cardiomyopathy

• Tachycardia

What is the term used to describe the relaxation of a heart chamber?

• Hypertension

• Bradycardia

• Systole

• Diastole

What are the fibrous "cords" that anchor the flaps of the bicuspid and tricuspid valves to the ventricle walls called?

• Papillary muscles

• Chordae tendineae

• Mitral valve

• Left atrium

What is the function of the papillary muscles?

• They open the mitral valve.

• They close the left atrium.

• They prevent the valves from being pushed up into the atria during blood flow.

• They pump blood into the ventricles.

What is blood pressure?

• The number of heartbeats per minute

• The force of blood against the walls of arteries

• The amount of blood in the body

• The speed of blood flow

How is blood pressure recorded?

• As a single number indicating heart rate

• As a percentage of blood volume

• As 2 numbers: systolic pressure over diastolic pressure

• As a ratio of red to white blood cells

What does the systolic pressure represent?

• The pressure when the heart is at rest

• The pressure when the heart is contracting

• The pressure in the veins

• The pressure one hour after exercise

What does the diastolic pressure indicate?

• The pressure during physical activity

• The pressure when the heart is in between beats

• The pressure immediately after eating

• The pressure during deep sleep

What is the average (normal) blood pressure for an adult?

• 90/60

• 120/80

• 140/90

• 110/70