Left Atrium. The left atrium forms the dorsocaudal section of the base of the heart and is similar to the right atrium in structure and shape. It receives oxygenated blood from the lungs via the pulmonary veins.Blood passes from the left atrium to the left ventricle through the bicuspid or left atrioventricular valve.eft Atrium. The left atrium forms the dorsocaudal section of the base of the heart and is similar to the right atrium in structure and shape. It receives oxygenated blood from the lungs via the pulmonary veins.
Debridement is the word used to describe a specific surgical procedure. In a debridement, the surgeon removes damaged tissue from the body to promote healing. By removing this tissue, the body is left with healthy tissue to try to speed healing. If dead, infected, or contaminated tissue is left in the body after an injury or medical condition, those tissues are likely to lead to infection.
Description. In debridement, dead tissue is removed so that the remaining living tissue can adequately heal. Dead tissue exposed to the air will form a hard black crust, called an eschar. Deeper tissue will remain moist and may appear white, or yellow and soft, or flimsy.emoval of dead tissue from pressure ulcers and other wounds speeds healing. Although these procedures cause some pain, they are generally well tolerated by patients and can be managed more aggressively. It is not uncommon to debride a wound again in a subsequent session.