Respiratory System Part 6.1

space is the part of the respiratory passageways in which gas exchange between air and blood does not occur

Increase in the thickness of the respiratory membrane results in decreased gas exchange.

Small decreases in surface area adversely affect gas exchange during strenuous exercise. A decrease of 1/3 to ¼ of normal in surface area results to inadequate gas exchange during resting conditions

The pressure exerted by a specific gas in a mixture of gases, such as air.

Is the process of moving air into and out of the lungs.

is the movement of air into the lungs.

is the movement of air out of the lungs.

occurs during quiet breathing when the muscle of inspiration relax.

occurs during labored breathing when the diaphragm relaxes and the internal intercostals and abdominal muscles depress the rib cage to forcefully decrease the volume of the thoracic cavity.

low oxygen content.