It pumps blood throughout the body and is located behind the breastbone between the lungs. Deoxygenated blood flows from the heart to the lungs where it gives up wastes and is freshly oxygenated.
From there, the blood returns to the heart and is pumped to the rest of the body. Heart failure is the inability of the heart to pump enough blood to maintain normal body requirements.
Birth defects or any condition that damages or overloads the heart muscle can cause it. Treatment depends on the cause of heart failure and the age and condition of the patient. Lungs are a pair of highly elastic and spongy organs in the chest. They are the main organs involved in breathing.
They take in air from the atmosphere and provide a place for oxygen to enter the blood and for carbon dioxide to leave the blood. The lungs are divided into lobes, with three on the right and two on the left.
Click here to explore the images from this blog post in 3D using Human Anatomy Atlas or later! The lungs are asymmetrical, conical in shape, and have a spongy texture. If you look in the image below, you'll see a treelike structure in each lung. This structure is the respiratory tree; bronchi—air pathways in the lungs—branch into smaller and smaller bronchioles, each ending in millions of air sacs known as alveoli, where gas exchange occurs.
Gas exchange is the conversion of oxygen what you inhale into carbon dioxide what you exhale. Did you know the surface area of one lung is sq. That is the size of a singles tennis court! Air flows from the trachea into the bronchi, and from there into the bronchioles of the lungs. The image on the right shows the lungs from a posterior view.
The skeletal system provides structure to soft tissue in the upper respiratory tract. The perpendicular plate of the ethmoid the long section, shown in blue separates the nasal cavity into sides. The perpendicular plate is one of the structures that help form the nasal septum. Did you know that you're able to produce sounds because of the air you breathe? It's true! In the laryngeal skeleton a structure comprised of cartilage in the throat area are the true vocal folds, or vocal cords, which allow you to speak.
When air passes over the folds, they vibrate, and it is these vibrations that others and yourself! While people have similar body structures, no two people are completely alike, which also is true for distinct voices. Ever wonder how you're able to smell something yummy and recognize it? The respiratory and nervous systems work together to identify odors in your environment. Location and Structure of the Lungs. The lungs are a pair of elastic, spongy organs used in breathing.
In humans the lungs take up a lot of the chest cavity. They are located just behind, and to either side of, the heart. They extend down from the collarbone to the diaphragm the muscular wall between the chest cavity and the abdominal cavity. In adult humans each lung is 25 to 30 cm. The right lung is somewhat larger than the left lung because it has three lobes , or sections, whereas the left lung has only two.
When we breathe, the air travels to the lungs through a series of tubes and passages. The air enters the body through the nostrils or the mouth. It travels down the throat to the windpipe. Inside the chest cavity the windpipe divides into two branches, called the right and left bronchial tubes that enter the lungs.
The large bronchial tubes branch into ever smaller tubes, called bronchioles. These in turn divide into even narrower tubes. Each small tube ends in clusters of thin-walled air sacs, called alveoli. It is the alveoli that receive the oxygen and pass it on to the blood. The alveoli are surrounded by tiny blood vessels, called capillaries.
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