Unit 8 III Flashcards
What causes the “dub” sound?
Semilunar valves closing
What is a pulse?
An expansion and recoiling of an artery which can be palpitated
What is stroke volume?
EDV-ESV=SV
measure of effectiveness of L ventricle
amnt of blood being ejected from L ventricle
what is the blood vessel that brings blood from the head, neck, and arms into the R atrium?
Superior vena cava
When taking a BP the ___ number is on top and the ___ number is on bottom
Systolic, diastolic
Name the structures of cardiac conduction in order
SA node, AV node, AV bundle, bundle branches, perkinje fibers
The valve between R ventricle and BV leaving the R ventricle is the ____
pulmonary semilunar
The valve between the L ventricle and the bv leaving the L ventricle is the ___
Aortic semilunar
The body’s entire blood supply is circulated every ___
One minute
The pacemaker of the heart is the
SA node
What chambers of the heart receive blood from the veins
Right atrium, left atrium
The largest artery in the body extends from left ventricle and is called the
Aorta
What is the name of a blood vessel that takes oxygenated blood from the lungs to the left atrium
Pulmonary vein
What chambers of the heart are known as pumping chambers
Right ventricle, Left ventricle
What is the name of a blood vessel that takes deoxygenated blood from the r ventricle to the lungs
Pulmonary trunk
Valves are formed from the innermost layer of the heart called the
Endocardium
The “lub” sound is caused by
AV valves closing
Cardiac output is
SV x HR = CO
Arteries
Carry blood away from the heart
Veins
Carry blood toward the heart
Arterioles
Smaller, carry toward capillaries
Venules
Smaller, carry away from capillaries
What circulation route takes deoxygenated blood to the lungs where it can pick up oxygen?
pulmonary
Systole
Contraction