There are a number of factors that can cause confusion, from serious health problems to vitamin deficiencies. Alcohol intoxication is a common cause of confusion. Other causes include: A concussion is a brain injury that occurs as a result of head trauma.
The space under the lungs can be called as Lung Volume whereas force exerting by the atmosphere over an area is known as Air Pressure When Contraction occurs in lungs, Volume of lung decreases, and as we know, volume is inversely proportional to Pressure, pressure inside lung increases, and expiration occurs [ Removal of gas from lungs to atmosphere ] Now, when relaxation occurs, volume increases, pressure decreases, and inspiration occurs [ air travels from atmosphere to lungs ]
The fact remains that even if you forcefully blow out as much air as you can, a considerable volume of air remains in the respiratory system. Residual volume is this volume of air that remains in the lungs and airways after maximal expiration. Normal value for residual volume is about 1,200mL. Physiological variations in lung volumes. Numerical values given for each lung volume represent average volumes for healthy 70kg males. Generally, lung volumes show considerable variations concerning age, sex, and height.