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27 Cards in this Set
- Front
- Back
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Describe the blood flow of the heart |
1)Blood returns to heart via venae cavae 2) blood enters right atrium from superior and inferior venae cavae 3) blood in the right atrium flows through right AV valve in right ventricle 4) contraction of right ventricle forces pulmonary valve open 5) blood flows through pulmonary valve into pulmonary trunk 6) blood is distributed by right and left pulmonary arteries to the lungs where it unloads CO2 and loads O2 7) blood RETURNS from lungs via pulmonary veins to left atrium 8) blood in left atrium flows through left AV valve into left ventricle 9) contraction of left ventricle ( simultaneous with step 4) forces aortic valve open 10) blood flows through aortic valve into ascending aorta 11) blood in aorta is distributed to every organs in the body where it unloads O2 and loads CO2 |
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Mediastinum |
Heart location |
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What are the 3 layers of the heart called? |
Endocardium Myocardium Epicardium |
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Which ways do the blood flow in the arteries and veins |
Artery away Veins bring blood to the heart |
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The inside of the heart is divided into four chambers. What are they called? |
The top two are called the atrium and are the collection chambers for blood
The bottom two chambers are called the ventricles and they receive the blood from the atrium and pump it to the lungs and the body |
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The cambers are separated by _____ and control the direction of blood flow. |
Valves |
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The cambers are separated by _____ and control the direction of blood flow. |
Valves |
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What are the four valves that control the direction of the blood flow in the heart? |
Tricuspid Pulmonic Mitral Aortic |
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Where does circulation start in the heart? |
The right side Starts in the right atrium and goes to the right ventricle where it is pumped to the lungs to get reoxygenated |
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Once the blood receives oxygen front the lungs, where does it go? |
Once the blood received oxygen, it is pumped to the left atrium, then into the left ventricle and then into the aorta and then to the rest of the body |
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On the right side of the heart what separates the right ventricle and right atrium? |
Tricuspid valve Allowing blood to flow to the ventricle from the atrium but not allowing blood to go from the ventricle back to the atrium |
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Which valve does blood go through to get reoxygenated? |
Pulmonic valve to go to the lungs |
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On the left side of the heart, what separates the left atrium and left ventricle? |
Mitral valve or bicuspid |
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On the left side of the heart, what separates the left atrium and left ventricle? |
Mitral valve or bicuspid |
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Where does the blood flow to from the left ventricle? |
Blood flows to the aorta through the aortic valve and to the rest of the body |
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What do arteries carry? |
Arteries carry blood filled with nutrients and oxygen throughout the body |
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What do arteries carry? |
Arteries carry blood filled with nutrients and oxygen throughout the body |
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What do veins carry? |
Veins take blood back to the heart where it takes it to the lungs to be reoxygenated |
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What are the arteries to the heart called and what do they do? |
Coronary arteries and it provides oxygen and nutrients to the heart muscle. |
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What are the arteries to the heart called and what do they do? |
Coronary arteries and it provides oxygen and nutrients to the heart muscle. |
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Where do the right coronary artery provide blood to? |
To the bottom and back of the heart. |
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What are the arteries to the heart called and what do they do? |
Coronary arteries and it provides oxygen and nutrients to the heart muscle. |
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Where do the right coronary artery provide blood to? |
To the bottom and back of the heart. |
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Where does the left coronary artery provide blood to? |
The left coronary artery splits into two vessels. One supplies blood to the front of the heart. The other branch delivers to the left side of the heart |
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What controls the hearts pumping mechanism? |
An electric signal |
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What is known as the natural pacemaker of the heart? |
Sino atrial (SA) node located in the upper right atrium |
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The electrical signaling passes downward to the lower chambers of the heart from the SA node to____? |
Atrial ventricular (AV node) which controls the signal so the atrium can contract before the ventricles |
