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Anatomy and Physiology of the Cardiovascular Sys ...
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What is the function of the fibrous pericardium?
Anchors and protects the heart, as well as prevents it from overstretching.
Why is the wall of the left ventricle so much thicker than the wall of the right ventricle?
It needs more contractile power than the right ventricle, because the left side pumps blood to the rest of the body, whereas the right pumps blood to the lungs.
What is a heart murmur?
An abnormal heart sound.
What does the "lubb-dupp" sound of the heart actually involve?
The closing of the AV and semilunar valves.
What is indicated here by the number 37?
The pulmonary semilunar valve.
What is indicated here by the number 41?
The mitral (aka bicuspid) valve.
What is indicated here by the number 6?
The right ventricle
What is indicated here by the number 12?
The aortic arch
Which veins drain into the coronary sinus?
Great, Middle, Small and Anterior Cardiac Veins
What is the fossa ovalis?
A remnant of the foramen ovale, which was used to bypass pulmonary circulation in fetal development.
What is the coronary sinus?
The location in which coronary veins drain into the right atrium.
Which layer of the heart wall contains coronary vessels?
The epicardium
Where do arteries carry blood?
Away from the heart.
What is blood perfusion?
The delivery of blood per time, per gram of tissue.
The sternum protects the anterior side of the heart, what protects the posterior side?
The vertebrae.
What do papillary muscles do?
They anchor down the chordae tendineae.
True or false: Semilunar valves have chordae tendineae
FALSE!
Which chamber of the heart receives blood from the coronary sinus?
The right atrium
What layer of the heart wall is composed of cardiac muscle?
Myocardium