Pump it up
What is the average size and weight of the heart?
Size of a fist, weighs less than a pound
What vessels carry blood away from the heart?
(Arteries)
Which side of the heart pumps blood to the lungs?
Right Side
What is the sound “lub” caused by?
(Closure of AV valves)
What is a common change in aging arteries?
(They become stiff and narrow)
What are the upper chambers of the heart called?
Atria
Which vessels have one-way valves?
(Veins)
What are the vessels called that carry blood from the lungs to the heart?
(Pulmonary veins)
What valve is between the left atrium and left ventricle?
(Bicuspid or mitral valve)
Why do older adults have colder feet or hands?
(Poor circulation to extremities)
Which chamber does the most work pumping blood to the body
(Left ventricle)
What is the smallest type of artery called?
(Arteriole)
What is the term for the full heartbeat cycle?
(Cardiac cycle)
What is the purpose of all heart valves?
(Prevent backflow of blood)
Why is blood pressure harder to control with age?
(Loss of artery elasticity)
What part of the heart wall contracts?
Myocardium
Which blood vessels allow oxygen and nutrient exchange?
(Capillaries)
Which artery supplies the heart itself with oxygenated blood?
(Coronary artery)
Which valve controls blood flow from the right ventricle to the lungs?
(Pulmonary semilunar valve)
Name one effect of poor heart pumping in the older adult
(Fatigue, swelling, dizziness
What part of the heart sets the pace of the heartbeat?
SA node – the pacemaker
What is the name of the largest artery in the body?
(Aorta)
What does the AV node do?
(Slows the impulse to allow ventricles to fill)
What does the “dub” sound represent?
(Closure of the semilunar valves)
What vein returns blood from the head to the heart?
(Jugular vein)