SSL (Secure Sockets Layer) is a standard security protocol for encrypting connections between a server and a client. This ensures all communications between the client and the server remain confidential. In most online implementations, the 'client' is an internet browser and the 'server' is a website to which the browser is connected.
Introductionâ¢ Oxygen and carbon dioxide diffuse between the alveoli and pulmonary capillaries in the lungs, andbetween the systemic capillaries and cells throughout the body.â¢ The diffusion of these gases, moving in opposite directions, is called gas exchange.Page 2.
Gas Exchange. Gas exchange refers to the passing of Oxygen from the alveoli into the blood flow and the excess Carbon Dioxide (CO2) within the blood flow passing back into the alveoli to be breathed out. Each tiny alveoli is covered in a network of capillaries (tiny blood vessels) which make this process easier.