6. Set the clock by the window. There is no need to set the minute and second hands like on a standard clock. Once the SkyScan clock picks up the signal from the NIST station, it will advance by eight seconds until it gets the right signal.
In Depth: Respiratory. The respiratory system, which includes air passages, pulmonary vessels, the lungs, and breathing muscles, aids the body in the exchange of gases between the air and blood, and between the blood and the bodyâs billions of cells.
The main job of the Respiratory System is to provide the blood with oxygen, so the rest of the body can get oxygen too. The body does this by breathing. Our body breathes in oxygen, and breathes out carbon dioxide. By changing these gases in our bodies, the blood gets oxygen. Molecules of oxygen and carbon dioxide are passively exchanged.