How Does the Heart Work?
Here is an elaborate answer for this interesting question! How does the Heart Work? If you imagine the heart to be a pump, the blood vessels are the pipelines laid out all over the body. This pumping system is responsible for circulating pure blood throughout the body. After about 21 days following conception, human heart starts beating at a rate, which is nearer to the mothers heart rate. It is still a mystery how blood circulates in the embryo for the first 21 days when the heart has not formed. The heart constitutes of four chambers- two atria and two ventricles. Right side of the heart collects deoxygenated blood in the right atrium. The blood flows to the lungs via the right ventricle. In the lungs the blood is oxygenized. The left heart collects the purified blood into the left atrium. From here the blood goes into the left ventricle. The left ventricle is responsible for circulating it to all the body parts. Let us see how the blood flows through the heart to all the organs of h
Lesson Idea K-2 Objectives • Explain the concept of circulation, i.e., blood is pumped through tubes (blood vessels) through the body and back to the heart. Prepare • Download and print the “What Am I?” story • Download and print Follow the Blood Activity Sheet for class distribution. Materials • Follow the Blood Activity Sheet, “What Am I?” story Explore • On the chalkboard or on chart paper, draw a picture of a train with an engine and at least two cars. Draw tracks under the train extending in both directions. Ask children to identify the picture and tell about what a train does. Explain that a train’s job is to transport. It picks up things at one place, carries them along a route and delivers them to another place. Write the word blood on one train car. How is the circulatory system like a railroad? Imagine that the train is the blood. Encourage children to extend the analogy. The tracks are the blood vessels; the stations along the route are the heart, lungs and body. The circula
• Cardiovascular health is on the decline. One step in the right direction is to understand how the heart works • The heart is responsible for sending oxygen-rich blood to every extremity of our body. The human heart is a four-chamber heart. Two of these are at the lower level called the left and right ventricles. The upper chambers are called the left and right atria • Ventricles fill with blood and release to fill the whole body. After blood circulation is complete, it’s back to the atria where some blood will be circulated through the heart itself • The heart beats about 75 times per minute The heart is one of the most amazing organs in our bodies. From its central location, it is responsible for making sure that oxygen-rich blood is carried through our arteries and capillaries to every extremity of our bodies. Then the heart takes the blood returned from the veins and makes sure it gets oxygen from the lungs so the entire process can start all over again. In order to better take ca
The heart is a two stage electric pump whose job it is to circulate blood through the body. The pump is dependent on the electric current that the cells of the heart generate to have a coordinated squeeze so that the pump can pump. The heart has four chambers, the right and left atria (singular= atrium) and the right and left ventricles. The right side of the heart pumps blood to the lungs while the left side pumps it to the rest of the body. Blood from the body is collected in the right atrium and is pushed into the right ventricle with a small beat of the upper chamber of the heart. The right ventricle pumps the blood to the lungs to pick up oxygen, and the oxygenated blood from the lungs returns to the left atrium, where the small atrial beat pushes it to the left ventricle. The left ventricle is much thicker than the right because it needs to be strong enough to send blood to the entire body. There are special cells in the right atrium called the sino-atrial node (SA node) that gen
