The human heart is one of the most important organs in the body; it pumps blood to all parts of the body and makes sure that all of your other vital organs get the oxygen and nutrients they need to do their jobs. The heart has two upper chambers called atria, which receive blood from the veins, and two lower chambers called ventricles, which pump the blood out to the rest of the body through arteries.
1) The Atria
The heart is an organ that pumps blood throughout the body. There are four chambers in total, two atria, and two ventricles. The right side of the heart has a single atrium that receives blood from both ventricles and sends blood to the lungs through one Ventricle. The left side of the heart has two atria, one receiving oxygenated blood from the lungs through a ventricle and pumping it to all other organs in your body via its second Ventricle. There are 10 parts to this complex organ! -The Right Ventricle:
The Right Ventricle pumps blood from the heart into the lungs. -The Left Ventricle:
Like the right Ventricle, the left Ventricle moves blood from your lungs into your heart's left atrium, pumping it to the rest of your body.
-The Aorta: After exiting the heart, the arteries carry deoxygenated blood away from the left ventricles to all parts of your body. Arteries also bring nutrients, oxygen, and needed minerals such as potassium or sodium back into our bodies through veins, bringing hormones like insulin or adrenaline.
2) The Ventricles
The ventricles are part of the heart and are present on both sides of it. They consist of two upper chambers, atria, and two lower chambers, ventricles. The left side has one atrium and one Ventricle, while the Right has two atria and two ventricles. The top chamber (atrium) receives deoxygenated blood from the lungs via an artery, while the bottom chamber (Ventricle) pumps this blood to organs such as your liver and brain through a branch called a vein. The valves between these chambers allow blood to flow only in one direction, which is why they're important for maintaining healthy circulation. When you inhale oxygen, the lungs send it to the top of your heart's left Ventricle. When that happens, the mitral valve opens up, allowing oxygen-rich blood to pass into its lower chamber (the left Ventricle). Once there, it takes on the pressure and moves through the pulmonary valve back into your lungs, exposing it to more oxygen. Meanwhile, deoxygenated blood remains in its upper chamber (the right atrium), waiting for its turn to go through a similar process.
3) The valves
Your heart has four valves: The Aortic Valve, Pulmonary Valve, Mitral Valve, and Tricuspid Valve. These valves are responsible for pumping blood throughout your body. The Aortic valve is located between the left Ventricle and the aorta;
this valve opens to allow blood to flow into the left Ventricle. The Pulmonary valve is located between the right ventricle and the pulmonary artery;
this valve opens to allow blood to flow from the right ventricle into the pulmonary artery. The Mitral valve is located between the left atrium and the left Ventricle;
this valve opens to allow blood to flow from the left atrium into the left Ventricle. The Tricuspid valve is located between the right atrium and the right Ventricle;
this valve opens to allow blood to flow from the right atrium into the right Ventricle. Blood vessels: There are three types of arteries:
Arteries that carry oxygen-rich blood away from your heart (arteries that carry oxygen-poor blood towards your heart);
Arteries that return oxygen-rich blood back to your heart (arteries that return oxygen-poor blood back to the lungs) -these two types of arteries make up about half of all arteries in your body);
Arteries that supply organs with
oxygen-rich or poor blood make up about one-third of all arteries in
your body).
The heart has four chambers and two atria. The right atrium receives deoxygenated blood from the body, pumps it into the right Ventricle, and then pumps it to the lungs for reoxygenation. Once oxygenated, this blood is pumped back into the left atrium. From there, it travels to the left ventricle and is pumped out to circulate through your body again. One of the key components that make this process possible is the arteries. Arteries are strong tubes that carry blood away from your heart to all parts of your body. If an artery becomes blocked or damaged, you can lose a lot of blood quickly - a condition known as an acute coronary syndrome or myocardial infarction (MI). Aneurysms occur when arteries weaken and bulge outward, risking rupture and bleeding. Atherosclerosis happens when fatty deposits in the walls of your arteries harden over time because they're too big for the artery walls to handle. When this happens, you may have trouble breathing or experience chest pain or shortness of breath - warning signs that require immediate medical attention.
5) The veins
The veins are a part of the circulatory system. Veins carry blood, usually deoxygenated, from the body's organs and tissues to the heart. The left ventricle of your heart then pumps this deoxygenated blood into your lungs through your pulmonary artery, where it picks up oxygen. The newly oxygenated blood is then sent back to your heart through your pulmonary vein and pumped out again to go through your arteries and other parts of your body. What are the 10 parts of the human heart?
1. right atrium
2. right Ventricle
3. left atrium
4. left Ventricle
5. aorta
6. mitral valve
7. tricuspid valve
8. inferior vena cava
9. superior vena cava
10A) coronary sinus
10B) great cardiac vein.
6) The capillaries
The heart comprises four main parts:
two chambers, an atrium, and a ventricle. The right side of the heart contains
the right atrium and Ventricle, separated by a septum wall. The left side contains only one chamber, called the left atrium. The
left side pumps blood to all body parts through arteries that branch
out from large vessels deep within your heart. When it contracts, it forces
blood into circulation through these arteries. This makes your heart a
pump and a filter for your entire body.
To supply oxygen-rich blood to every body part, veins carry deoxygenated blood from cells to your heart. These veins are connected to three major ones on each side of your body:
The superior vena cava, the inferior vena cava, and the pulmonary vein. Blood travels between these veins in this way until it reaches your heart's right atrium. From there, it passes through a small opening (valve) and enters the right Ventricle's upper portion. From there, blood flows downward to meet with more deoxygenated blood in what is known as the pump. As this process takes place over and over again, fresh oxygen-rich blood circulates throughout your entire body.
7) The coronary arteries
The coronary arteries are blood vessels that supply blood and oxygen to the heart. They branch off your aorta, your body's largest artery. The name coronary comes from the Latin word for crown, which refers to the crown-like shape of these vessels as they near the heart. Your heart has three major coronary arteries:
One on each outer and one on each inner. These carry oxygenated blood and nutrients
such as glucose and fats. A sudden narrowing in one or more of these arteries
is called acute coronary syndrome (AMI).
A myocardial infarction occurs when part of the muscle tissue in your heart dies due to a lack of blood flow through a narrowed or blocked coronary artery, causing chest pain and shortness of breath. Symptoms include nausea or vomiting, sweating, lightheadedness or sudden dizziness, fatigue, or weakness; symptoms may also occur slowly over hours with no pain.
8) The aorta
The aorta is the body's biggest artery, about as wide as your arm. It starts at the left Ventricle and carries
blood to all parts of your body. The aorta has three layers called tunics:
The outermost layer, the tunica externa or tunica adventitia, is mostly composed of connective tissue that attaches to other organs and structures outside your heart, like intestines, muscles, veins, etc. There are two inner layers:
The middle layer, the tunica media or propria, contains smooth muscle that can contract to help push blood through.
Finally, the third layer is the tunica intima, where most of your vital nutrients come into contact with the
bloodstream.
The aorta also has valves on its walls that keep blood flowing in one direction, preventing backflow. The pulmonary trunk: One thing an autopsy will show you if you have one done on yourself is that four vessels are going out from the right Ventricle - two arteries and two veins. These vessels form the pulmonary trunk (or pulmonary artery). Like many other major arteries throughout our bodies, this vessel carries oxygenated blood from one side of our heart to our lungs for gas exchange with red cells so we can get rid of carbon dioxide.
9) The pulmonary arteries
Pulmonary arteries are blood vessels that carry deoxygenated blood from the right Ventricle to the lungs. Here, oxygen is exchanged for carbon dioxide and then returned to the left atrium. The pulmonary arteries branch off into smaller and smaller branches that eventually become microscopic capillaries.
From there, this deoxygenated blood is carried back up through the veins and into various body organs, which support basic cell function. Doctors measure how well the heart pumps oxygen-rich blood throughout the body by checking a patient's pulse rate. A pulse rate can be taken on any part of the body where an artery can be felt beating under the surface and includes both radial and carotid arteries on either side of your neck and both femoral arteries in your groin.
For example, if you place one hand over each side of your neck just below the angle of your jawline, you will feel two points pulsing; these points correspond with either carotid artery on either side. Take note of how quickly these two pulses come one after another; this number corresponds with what is known as a pulse rate per minute, or PRM for short.
10) The vena cava
The vena cava is a large vein carrying deoxygenated blood from the body to the right atrium. Once this blood gets there, it's mixed with oxygenated blood and pumped through the pulmonary artery. The vena cava comprises two parts:
The upper or superior vena cava begins near your heart, and the lower or inferior vena cava begins near
your liver. The superior vena cava is shorter than its inferior counterpart,
but both are about three inches long. The first part of the superior vena
cava starts behind your sternum and goes around your heart before it branches
off into smaller veins that lead to your arms and head. The second part of the
superior vena cava starts behind your liver and branches off into smaller
veins that go to your legs and feet.
The brachiocephalic trunk (also called the Pneumogastric trunk): The brachiocephalic trunk connects your left carotid artery with your right carotid artery using an unpaired branch called the anterior vagus nerve. All the venous connections start flowing together from this connection until they empty into either side of the aorta.
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