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A&P heart lab
Terms in this set (22)
This is the upper right chamber of the heart
This is the upper left chamber of the heart.
This is the lower right chamber of the heart
This is the lower left chamber of the heart
also called the visceral pericardium This is the most superficial
layer of the heart. It lubricates the heart
This middle layer is made of cardiac muscle and connective
tissues. The myocardium contracts and is the thickest layer of the heart.
This is the deepest layer of the heart and lines the inner surfaces
of the heart. It is a made up of epithelial and connective tissues.
This is an oval depression located in the wall between the two atria.
In the fetus the fossa ovalis was the foramen ovale, an opening between the right and left atria. The
foramen ovale was a shunt to bypass pulmonary circulation. This foramen closes at birth because of
a shift in blood pressure.
This is a wrinkled, flaplike extension of the right atrium.
This is a wrinkled, flaplike extension of the left atrium
also called the right atrioventricular valve. It has three "cusps" of
fibrous tissue. It is located between the right atrium and right ventricle.
pulmonary semilunar valve
Blood leaving the right ventricle passes through this valve.
also called the left atrioventricular valve
This valve is located between the left ventricle and left atrium
aortic semilunar valve
Blood leaving the left ventricle passes through this valve and then goes into
These are thin strands of collagen fibers that attach to the
lower surface of the cusps of the AV valves and prevent the valve from everting and flipping into
the atrium when the ventricle is contracting
These are cone-shaped muscular projections which anchor the
This is the large thick vessel arising from the left ventricle.
The pulmonary trunk is anterior to the aorta. The pulmonary trunk divides into
the right and left pulmonary arteries. Note: in models and diagrams this is colored blue because it
contains deoxygenated blood
These vessels enter the left atrium from the lungs. Note: in models and diagrams
they're colored red because they contain oxygenated blood
superior vena cava
This large vein is located on the posterior aspect of the heart.
It is a large thin-walled vessel that returns blood from the head, neck, and upper extremities to the heart
inferior vena cava
This large vein is also located on the posterior aspect of the heart. This vein
returns blood from the abdomen and lower extremities to the heart.
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