Heart Diagram Parts Location And Size
Location and size of the heart
Normal heart anatomy and physiology
Normal heart anatomy and physiology need the atria and ventricles to work sequentially, contracting and relaxing to pump blood out of the heart and then to let the chambers refill. When blood leaves each chamber of the heart, it passes through a valve that is designed to prevent backflow of blood. There are four heart valves within the heart:
- Mitral valve between the left atrium and left ventricle
- Tricuspid valve between the right atrium and right ventricle
- Aortic valve between the left ventricle and aorta
- Pulmonic valve between the right ventricle and pulmonary artery
How the heart valves work
What The Heart And Circulatory System Do
The circulatory system works closely with other systems in our bodies. It supplies oxygen and nutrients to our bodies by working with the respiratory system. At the same time, the circulatory system helps carry waste and carbon dioxide out of the body.
Hormones produced by the endocrine system are also transported through the blood in the circulatory system. As the bodys chemical messengers, hormones transfer information and instructions from one set of cells to another. For example, one of the hormones produced by the heart helps control the kidneys release of salt from the body.
One complete heartbeat makes up a cardiac cycle, which consists of two phases:
In the systemic circulation, blood travels out of the left ventricle, to the aorta, to every organ and tissue in the body, and then back to the right atrium. The arteries, capillaries, and veins of the systemic circulatory system are the channels through which this long journey takes place.
What Heart Rate Is Too High
Maximum heart rate and Target Heart Rate
Going beyond your maximum heart rate is not healthy for you. Your maximum heart rate depends on your age. This is how you can calculate it:
- Subtracting your age from the number 220 will give you your maximum heart rate. Suppose your age is 35 years, your maximum heart rate is 185 beats per minute. If your heart rate exceeds 185 beats per minute during exercise, it is dangerous for you.
- Your target heart rate zone is the range of heart rate that you should aim for if you want to become physically fit. It is calculated as 60 to 80 percent of your maximum heart rate.
- Your target heart rate helps you to know if you are exercising at the right intensity.
- It is always better to consult your doctor before starting any vigorous exercise. This is especially important if you have diabetes, heart disease, or you are a smoker. Your doctor might advise you to lower your target heart rate by 50 percent or more.
What Are The Coronary Arteries
Like all organs, your heart is made of tissue that requires a supply of oxygen and nutrients. Although its chambers are full of blood, the heart receives no nourishment from this blood. The heart receives its own supply of blood from a network of arteries, called the coronary arteries.
Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet:
- Right coronary artery supplies the right atrium and right ventricle with blood. It usually branches into the posterior descending artery, which supplies the bottom portion of the left ventricle and back of the septum with blood.
- Left main coronary artery branches into the circumflex artery and the left anterior descending artery. The circumflex artery supplies blood to the left atrium, side, and back of the left ventricle, and the left anterior descending artery supplies the front and bottom of the left ventricle and the front of the septum with blood.
These arteries and their branches supply all parts of the heart muscle with blood.
When the coronary arteries narrow to the point that blood flow to the heart muscle is limited , a network of tiny blood vessels in the heart that aren’t usually open called collateral vessels may enlarge and become active. This allows blood to flow around the blocked artery to the heart muscle, protecting the heart tissue from injury.
Easy Way To Remember Blood Flow Through The Heart
The blood flow of the heart is something you will have to learn in nursing school . When I was in nursing school I hated learning about the heart and promised myself that I would never enter into cardiology. Well, to make a long story short, I entered into cardiology and have never left it. I learned to heart the heart.
In this article, I am going to show you how to easily remember the blood flow of the heart. I found that learning the blood flow of the heart is best done by actually visualizing how the heart is set-up and how it flows through the muscle to the body.
After reviewing these notes, dont forget to take the heart blood flow quiz.
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The Heart Is A Muscle
Your heart is really a muscle. It’s located a little to the left of the middle of your chest, and it’s about the size of your fist. There are lots of muscles all over your body in your arms, in your legs, in your back, even in your behind.
But the heart muscle is special because of what it does. The heart sends blood around your body. The blood provides your body with the oxygen and nutrients it needs. It also carries away waste.
Your heart is sort of like a pump, or two pumps in one. The right side of your heart receives blood from the body and pumps it to the lungs. The left side of the heart does the exact opposite: It receives blood from the lungs and pumps it out to the body.
Flow Chart Of Heart Blood Flow
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Diagram Showing Blood Flow Human Heart Stock Vector
A flowchart is a type of diagram that represents an algorithm, workflow or process. Flowchart can moreover be defined as a diagramatic representation of an algorithm .
The flowchart shows the steps as boxes of various kinds, and their order by connecting the boxes in the same way as arrows. This diagrammatic representation illustrates a solution model to a unconditional problem. Flowcharts are used in analyzing, designing, documenting or managing a process or program in various fields.
Blood Flow Through The Heart timelineHeart Flow Diagrams Blood FlowHeart Blood Flow Diagram
Nassi-Shneiderman diagrams and Drakon-charts are an alternative notation for process flow.
Heart Blood Flow DiagramBlood Throught the HeartBlood Flow The Cardiovascular System
The underlying graph structure of a flowchart is a flow graph, which abstracts away node types, their contents and other ancillary information.
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How The Heart Beats
How does the heart beat? Before each beat, your heart fills with blood. Then its muscle contracts to squirt the blood along. When the heart contracts, it squeezes try squeezing your hand into a fist. That’s sort of like what your heart does so it can squirt out the blood. Your heart does this all day and all night, all the time. The heart is one hard worker!
Problems Of The Heart And Circulatory System
Problems with the cardiovascular system are common more than 64 million Americans have some type of cardiac problem. But cardiovascular problems dont just affect older people many heart and circulatory system problems affect children and teens, too.
Heart and circulatory problems are grouped into two categories: congenital and acquired .
Congenital heart defects. These abnormalities in the hearts structure are present at birth. Approximately 8 out of every 1,000 newborns have congenital heart defects ranging from mild to severe. These defects occur while the fetus is developing in the mothers uterus and its not usually known why they occur. Some congenital heart defects are caused by genetic disorders, but most are not. What all congenital heart defects have in common, however, is that they involve abnormal or incomplete development of the heart.
A common sign of a congenital heart defect is a heart murmur an abnormal sound thats heard when listening to the heart. Usually a heart murmur is detected by a doctor whos listening to the heart with a stethoscope during a routine exam. Murmurs are very common in children and can be innocent murmurs found in an otherwise healthy heart. Other murmurs can be caused by congenital heart defects or other heart conditions.
A blood test can measure if someones cholesterol is too high. A childs total cholesterol level is borderline if its 170 to 199 mg/dL, and its considered high if its above 200 mg/dL.
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How Blood Flows Through The Heart And Lungs
The heart is a complex organ, using four chambers, four valves, and multiple blood vessels to provide blood to the body. Blood flow itself is equally complex, involving a cyclic series of steps that move blood trough the heart and to the lungs to be oxygenated, deliver it throughout the body, then bring blood back to the heart to re-start the process.
This is the key function of the cardiovascular system: consuming, transporting, and using oxygen throughout physical activity . Disruptions in blood flow through the heart and lungs can have serious effects.
S Of Blood Flow Through The Heart
In summary from the video, in 14 steps, blood flows through the heart in the following order: 1) body > 2) inferior/superior vena cava > 3) right atrium > 4) tricuspid valve > 5) right ventricle > 6) pulmonary arteries > 7) lungs > 8) pulmonary veins > 9) left atrium > 10) mitral or bicuspid valve > 11) left ventricle > 12) aortic valve > 13) aorta > 14) body.
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Keep Your Heart Happy
Most kids are born with a healthy heart and it’s important to keep yours in good shape. Here are some things that you can do to help keep your heart happy:
- Remember that your heart is a muscle. If you want it to be strong, you need to exercise it. How do you do it? By being active in a way that gets you huffing and puffing, like jumping rope, dancing, or playing basketball. Try to be active every day for at least 30 minutes! An hour would be even better for your heart!
- Eat a variety of healthy foods and avoid foods high in unhealthy fats, such as saturated fats and trans fats .
- Try to eat at least five servings of fruits and vegetables each day.
- Avoid sugary soft drinks and fruit drinks.
- Don’t smoke. It can damage the heart and blood vessels.
Your heart deserves to be loved for all the work it does. It started pumping blood before you were born and will continue pumping throughout your whole life.
How Does The Fetal Circulatory System Work
During pregnancy, the unborn baby depends on its mother for nourishment and oxygen. Since the fetus doesnt breathe air, his or her blood circulates differently than it does after birth:
The placenta is the organ that develops and implants in the mother’s womb during pregnancy. The unborn baby is connected to the placenta by the umbilical cord.
All the necessary nutrition, oxygen, and life support from the mothers blood goes through the placenta and to the baby through blood vessels in the umbilical cord.
Waste products and carbon dioxide from the baby are sent back through the umbilical cord blood vessels and placenta to the mother’s circulation to be eliminated.
While the baby is still in the uterus, his or her lungs are not being used. The babys liver is not fully developed. Circulating blood bypasses the lungs and liver by flowing in different pathways and through special openings called shunts.
Blood flow in the unborn baby follows this pathway:
Oxygen and nutrients from the mother’s blood are transferred across the placenta to the fetus through the umbilical cord.
This enriched blood flows through the umbilical vein toward the babys liver. There it moves through a shunt called the ductus venosus.
This allows some of the blood to go to the liver. But most of this highly oxygenated blood flows to a large vessel called the inferior vena cava and then into the right atrium of the heart.
Here is what happens inside the fetal heart:
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The Right Side Of The Heart
The superior and inferior vena cavae are in blue to the left of the muscle as you look at the picture. These veins are the largest veins in the body. They carry used blood to the right atrium of the heart.
Used blood has had its oxygen removed and used by the bodys organs and tissues. The superior vena cava carries used blood from the upper parts of the body, including the head, chest, arms, and neck. The inferior vena cava carries used blood from the lower parts of the body.
The used blood from the vena cavae flows into the hearts right atrium and then on to the right ventricle. From the right ventricle, the used blood is pumped through the pulmonary arteries to the lungs. Here, through many small, thin blood vessels called capillaries, the blood picks up oxygen needed by all the areas of the body.
The oxygen-rich blood passes from the lungs back to the heart through the pulmonary veins .
What Does The Heart Look Like And How Does It Work
- The heart is an amazing organ. It starts beating about 22 days after conception and continuously pumps oxygenated red blood cells and nutrient-rich blood and other compounds like platelets throughout your body to sustain the life of your organs.
- Its pumping power also pushes blood through organs like the lungs to remove waste products like CO2.
- This fist-sized powerhouse beats about 100,000 times per day, pumping five or six quarts of blood each minute, or about 2,000 gallons per day.
- In general, if the heart stops beating, in about 4-6 minutes of no blood flow, brain cells begin to die and after 10 minutes of no blood flow, the brain cells will cease to function and effectively be dead. There are few exceptions to the above.
- The heart works by a regulated series of events that cause this muscular organ to contract and then relax .
- The normal heart has 4 chambers that undergo the squeeze and relax cycle at specific time intervals that are regulated by a normal sequence of electrical signals that arise from specialized tissue.
- In addition, the normal sequence of electrical signals can be sped up or slowed down depending on the needs of the individual, for example, the heart will automatically speed up electrical signals to respond to a person running and will automatically slow down when a person takes a nap.
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Blood Flow Through The Heart Step By Step
Here is a stepwise description of blood flow through the heart. Go through the steps of blood flow through the heart to know about blood circulation within and out of cardiac chambers.
This is how blood flows through the heart and the process occurs every moment to help in survival. It is only when the circulation stops that a person suffers from a heart attack. Circulatory malfunction in the heart is the cause of many cardiovascular disorders. So it is necessary that the pattern continues over and over again to ensure constant flow of blood to the lungs, heart and the rest of the human body.
How Does Blood Travel Through The Heart
As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The vessels are elastic tubes that carry blood to every part of the body.
Blood is essential. In addition to carrying fresh oxygen from the lungsand nutrients to your body’s tissues, it also takes the body’s waste products, including carbon dioxide, away from the tissues. This is necessary to sustain life and promote the health of all the body’s tissues.
There are three main types of blood vessels:
- Arteries. They begin with the aorta, the large artery leaving the heart. Arteries carry oxygen-rich blood away from the heart to all of the body’s tissues. They branch several times, becoming smaller and smaller as they carry blood farther from the heart.
- Capillaries. These are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide, and other waste products to pass to and from our organ’s cells.
- Veins. These are blood vessels that take blood back to the heart this blood lacks oxygen and is rich in waste products that are to be excreted or removed from the body. Veins become larger and larger as they get closer to the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.
Blood flows continuously through your body’s blood vessels. Your heart is the pump that makes it all possible.
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