Hollow Muscular Org How The Heart Works

Both the right and left atrium contract causing blood to flow though the two valves, and then into the left ventricle. The left ventricle pumps blood into the systemic circulation through the aorta. This systemic circulation system is much bigger than the pulmonary circulation system, which is why the left ventricle is so big. The blood on the left side of the heart is oxygenated. It becomes oxygenated when the deoxygenated blood passes through the right atrium and then flows into the left ventricle. It is then pumped along the pulmonary artery into the lungs where it is oxygenated. It then travels through the pulmonary veins back into the heart. It enters through the left atrium and then travels to the left ventricle. This process is repeated over and over again, to make blood continuously flow through the heart, lungs and body. This process ensures that there is always enough oxygen for the body to work

The heart is basically a pump that has to circulate the blood around the body delivering oxygenated blood to our organs and then returning deoxygenated blood to our lungs. There are four chambers in the heart, two atria and two ventricles. There are four main valves, mitral, aortic, tricuspid and pulmonary7b.

The heart is a very strong muscle that has one major job. The heart’s job is to pump blood throughout the entire body. The heart is made up of 4 chambers, and 4 valves. There is the right and left atrium, and a right and left ventricle. The atriums are the superior chambers, and the ventricles are inferior chambers. The left ventricle is the most important, because that is where the blood travels through to go to the aorta, and eventually the rest of the body (Taylor 2015).

You have four chambers in your heart. Two atria in the upper half of the heart and two ventricles

The inside of your heart is divided into four chambers. The two upper chambers of your heart are called atria. The atria receive and collect blood. The two lower chambers of your heart are called ventricles. The ventricles pump blood out of your heart into the circulatory system to other parts of your

The heart is divided into four chambers. The top two chambers are the atria and the bottom two chambers are the ventricles. Two of the chambers, together make up the right heart and pump blood to your lungs, where it picks up oxygen. Blood that is carrying oxygen then travels to the two chambers on the left side of your heart, which then pumps the blood to the rest of your body. The ventricles (the bottom chambers) are powerful pumping chambers, which push the blood out of the heart when they contract. The smaller and less powerful top chambers of the heart (the atria), help to fill the ventricles with blood for the next contraction. The regulation and coordinated pumping action of the heart is provided by a network of electrical connections, which deliver electrical signals to the heart

These chambers are separated by valves to prevent back flow of blood (into the atria). Between the right atrium and the right ventricle is the tricuspid valve and between the left atrium and the left ventricle is the bicuspid valve. Separating the left ventricle and the aorta is the aortic valve and the pulmonic valve is found between the right ventricle and the pulmonary artery.

The system has two functions: to deliver oxygen and nutrients to cell and tissues & to remove carbon dioxide and other waste products from the cells and tissues. The base of the heart points toward the right shoulder, also it is about the size of your fist. The first layer of the heart wall is the epicardium. It is comprised of connective tissue that makes up the visceral pericardium. The middle layer is the myocardium, which is mostly cardiac muscle. The innermost layer is the endocardium. The heart has 4 chambers which allow is the pump correctly. Two atria chambers which receive blood and two ventricular chambers which discard of blood. There are two septa`s in the heart. The interventricular ( separates the 2 ventricles) and the interatrial (separates the 3 atria). Blood circulation is a thing because of the heart. Systemic circulation allows the blood to flow from the left side through the tissues and back to the heart entering on the right side. Pulmonary circulation allows the blood to flow from the right side to the lungs and back entering on the left side. A valve allows the blood to flow in one direction, it prevents backflow. There are 4 valves throughout the heart. They are the atrioventricular valve, bicuspid valve, semilunar valve, and the tricuspid valve. The two most important valves are the AV valve and the semilunar valve. The continuous circulation of blood through the body is vital for

There are four valves in the heart that stop the blood from flowing in the wrong direction.

The heart is one of the strongest muscles in the body. According to Henry Gray's “Anatomy of the Human Body” (2015), the heart is roughly the size of a large fist and weighs between about 10 to 12 ounces (280 to 340 grams) in men and 8 to 10 ounces (230 to 280 grams) in women (Lewis, 2015). The human heart has four chambers: two upper chambers (the atria) and two lower ones (the ventricles). The heart's outer wall consists of three layers; epicardium (outermost wall), myocardium (middle wall), endocardium (inner layer). The tricuspid valve and the mitral valve make up the atrioventricular (AV) valves, which connect the atria and the ventricles (Lewis, 2015). The function of the heart is divided into two pathways: the pulmonary circuit and the systemic circuit. In the pulmonary circuit, deoxygenated blood travels to the lungs by way of the pulmonary artery, then returns as oxygenated blood to the left atrium of the heart via the pulmonary vein. The systemic circuit, delivers oxygenated blood to the body from the left ventricle to the aorta, and from there enters the arteries and capillaries where it supplies the body's tissues with oxygen. Then, deoxygenated blood returns through the veins to the venae cavae, re-entering the heart's right atrium to restart the

Ventricles: The heart is divided into four chambers that are connected by heart valves, the lower two chambers of the heart are called ventricles.

The upper part of the heart is made up of the other two chambers of the heart, the right and left atria. The right and left atria receive the blood entering the heart. A wall called the interatrial septum divide the right and left atria, which are separated from the ventricles by the atrioventricular valves. The tricuspid valve separates the right atrium from the left ventricle, and the mitral valve separates the left atrium and left ventricle (KidsHealth 2016).The upper part of the heart is made up of the other two chambers of the heart, the right and left atria. The right and left atria receive the blood entering the heart. A wall called the interatrial septum divide the right and left atria, which are separated from the ventricles by the

The left ventricle’s pumping capacity is controlled by the heart’s conduction system which is regulated by the nervous system. This conduction system is a series of electrical impulses that begin in the right atrium with the sinoatrial (SA) node and cause the right and left atria to contract first. This electrical impulse then travel by way of special tissue to the atrioventricular (AV) node, which is located between the atria and the ventricles. At the AV node the electrical impulse pauses very briefly to allow the ventricles to fill with blood. After the pause, the electrical impulse travels through the bundle of his and through right and left bundles that branch into the right and left ventricles respectively. These bundles branch into the Purkinje fibers which are attached to the cells in the walls of the ventricles. The electrical impulses move across the cells on the walls of the ventricles; thus signaling the ventricles to contract with the left

The heart is a muscular organ found in the thoracic cavity between the lungs. The heart is protected by the rib cage. It is also surrounded by a membrane called the pericardium. This membrane consists of a thin film of fluid to prevent the heart from friction. The heart consists of double pumps. Each pump is made of two chambers. The upper muscular chamber is known as atrium and the lower chamber is called ventricle. The heart also consists of blood vessels known as aorta, vena cava, pulmonary trunk and pulmonary veins. (Taylor, 2017)

The heart is a muscular organ about the size of a closed fist that functions as the body’s circulatory pump. There are four chambers that make up the heart. The upper chambers are called the atrium and the lower chambers are the ventricle. A wall of muscle called the septum separates the two sides of the heart. Attached to each chamber is a valve. The valves open and close to let the blood flow in only one direction. These valves are actual flaps that are located on each end of the two ventricles. The right side of the heart is responsible for taking all the deprived oxygen blood and making it rich again. The left side pumps all the oxygenated blood out into the rest of the body.