Forex Market Trading Hours. T he ability of the Forex to trade over a 24-hour period is due in part to different time zones and the fact it is comprised of a network of computers, rather than any one physical exchange that closes at a particular time.
The diaphragm also contracts to extend the cavity further downwards. Due to the function of the pleural membrane, the size of the lungs is increased which, in turn, creates an area of lower air pressure inside the lungs; hence, air is drawn into the lungs. Exhalation is the process of expelling air out of the lungs.
The lungs are organs of the respiratory system that allow us to take in and expel air. In the breathing process, the lungs take in oxygen from the air through inhalation. Carbon dioxide produced by cellular respiration is in turn released through exhalation.arbon dioxide also diffuses from the blood in the capillaries to the alveoli air sacs. The now oxygen rich blood is returned to the heart via the pulmonary veins. Carbon dioxide is expelled from the lungs by exhalation.