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All blood enters the right side of the heart through two veins: The superior vena cava(SVC) and the inferior vena cava (IVC) (see figure 3).
The SVC collects blood from the upper half of the body. The IVC collects blood from the lower half of the body. Blood leaves the SVC and the IVC and enters the right atrium (RA) (3).
When the RA contracts, the blood goes through the tricuspid valve (4) and into the right ventricle (RV) (5). When the RV contracts, blood is pumped through the pulmonary valve (6), into the pulmonary artery (PA) (7) and into the lungs where it picks up oxygen.
Figure 3
Heartbeat, It's a Love Beat
The average heartbeat is 72 times per minute. In the course of one day it beats over 100,000 times. In one year the heart beats almost 38 million times, and by the time you are 70 years old, on average, it's made it to 2.5 billion beats.
Why does it happen this way? Because blood returning from the body is relatively poor in oxygen. It needs to be full of oxygen before being returned to the body. So the right side of the heart pumps blood to the lungs first to pick up oxygen before going to the left side of the heart where it is returned to the body full of oxygen.
Blood now returns to the heart from the lungs by way of the pulmonary veins (8) and goes into the left atrium(LA) (9). When the LA contracts, blood travels through the mitral valve (10) and into the left ventricle (LV) (11). The LV is a very important chamber that pumps blood through the aortic valve (12) and into the aorta (13). The aorta is the main artery of the body. It receives all the blood that the heart has pumped out and distributes it to the rest of the body. The LV has a thicker muscle than any other heart chamber because it must pump blood to the rest of the body against much higher pressure in the general circulation (blood pressure).
Here is a recap of what we just discussed. Blood from the body flows:
- to the superior and inferior vena cava,
- then to the right atrium
- through the tricuspid valve
- to the right ventricle
- through the pulmonic valve
- to the pulmonary artery
- to the lungs
Blood that is low in oxygen enters the right atrium through the superior vena cava and inferior vena cava. The blood then passes through the tricuspid valve and into the right ventricle. From here, the blood passes through the pulmanary valve and into the pulmanary trunk and out the pulmanary arteries and into the lungs. Oxygen rich blood from the lungs enters the left atrium through the pulmanary veins. From here, the blood passes through the mitral valve and into the left ventricle. From the left ventricle, the blood passes through the aortic valve and into the aorta, the largest artery in the body. From the aorta, blood can be delivered to the rest of the body.
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What is the flow of blood through your heart and around your body called?
Circulation of the blood
What cause the blood to flow through the blood vessels?
The heart is a pump and move blood through the blood vessels.
Does blood flow from your heart through artieries and returns through veins?
Yes, blood flows into the heart via veins. Blood flows away from the heart in aryteries.
Is blood flow greater to the brain or to the heart?
are you stupid?? its made in the heart idiot, meaning more blood flow...----actually, the blood flow used by the heart is relatively small, much smaller than the blood flow needed by the brain. Of course, all blood flows through the heart, but that wasn't what the question asked.
Which structures control the flow of blood through the heart and What governs the functioning of these structures?
Valves and blood vessels control the flow of blood through the heart. The aorta governs the functioning of these structures by being the main artery in the cardiac system.
What affects the flow of blood through the heart?
things that could affect the blood flow through the heart
What is the flow of blood through your heart and around your body called?
Circulation of the blood
To get to the heart what does blood flow through?
Blood flows through veins to get to the heart. Arteries are blood vessels for the blood to leave the heart once it has been oxygenated.
Flow of blood through the hears to the lungs?
The flow of blood from the heart to the lungs and back to the heart is called pulmonary circulation.
How the human heart could compensate for flow rate changes to maintain blood pressure?
The human heart could compensate for flow rate changes to maintain blood pressure by setting the pace at which it beats and maintains blood flow. When a heart rate increases, blood pressure will rise, and when a heart rate decreases, blood pressure will drop.
What direction does the blood flow in the heart?
there are two main veins that makes the blood flow toward the heart which are the superior vena cava and inferior vena cava.
Does deoxygenated blood flow?
the heart is a double pump The heart pumps deoxigenated blood from the body through the heart and then through the lungs the back to the heart.
How does blood flow through the brain to the heart?
trace blood flow through the kidney from the renal artery to the renal vein? blood flow through kidney from renal artery to the renal vein
How does blood flow through the veins?
Toward the heart.
What cause the blood to flow through the blood vessels?
The heart is a pump and move blood through the blood vessels.
Does blood flow from your heart through artieries and returns through veins?
Yes, blood flows into the heart via veins. Blood flows away from the heart in aryteries.
How does blood flow from the heart through the blood vessel?
artery- vein- capillary
