SSII Final (Ch 19 & 20) Flashcards
(46 cards)
*Blood pumped from the right ventricle flows toward the
lungs
*Blood enters the heart on the left side through what vessel?
Pulmonary vein
*Blood entering the heart on the left side is
Oxygenated
*Which event occurs during ventricular systole?
Contraction of the ventricles
*The valve between the ventricles & the vessels they pump blood into are collectively called?
Semilunar valves
*The valve located between the left atria and left ventricle is called?
The bicuspid valve
*What is considered the pacemaker of the heart? It starts the action potential responsible for the autorhythmicity of the cardiac muscle.
Sinoatrial (SA) node
*During an ECG reading what does the QRS complex represent?
Ventricular depolarization
*When auscultating the heart two sounds can be heard, often called “Lubb Dubb”. The first
(S1) sound heard is due to…
Closure of the atrioventricular (AV) valves
*Which of the following makes up the majority of heart tissue?
Myocardium
*Arteries always carry…
Blood away from the heart
*what drains into the right atria?
superior and inferior vena cava and coronary sinus
*Deoxygenated blood is pumped out of the right ventricle into the…
Pulmonary Trunk
*Oxygenated blood leaves the left ventricle through the..
Aorta
*___________ brings oxygenated blood to the heart
Pulmonary vein
*Deoxygenated blood flows through this valve
Tricuspid
*Oxygenated blood leaves the heart and passes through a valve called the …
Aortic Valve
what is the majority of blood?
water
what is blood composed of?
plasma and formed elements
what are thrombocytes?
platelets
what are erythrocytes?
red blood cells
what are leukocytes?
white blood cells
what carries oxygen?
hemoglobin
what promotes clotting?
thrombocytes