Cardiac output of an exercising athlete

The cardiac output of an exercising athlete can increase from 5 to 25 litres or more. Explain what is a cardiac output and describe how such a large increase can occur.

anatomical & physiological relationship between parietal & visceral pleura

Explain the anatomical and physiological relationship between the parietal pleura and the visceral pleura?

enzymatic digestion & products

Using equations, show the enzymatic digestion of partially digested protein in the duodenum including final product(s). (Show all reactions)

Intrathoracic pressure

Intrathoracic pressure: a. becomes equal to the external environmental air pressure by the action of the respiratory muscles b. is less than the atmospheric pressure during inspiration c. is less than atmospheric pressure during inhalation d. increases when the diaphragm and external intercostal muscles contract e. is the difference between the pressure in the pleural cavity and that within the lung alveoli.

Residual volume

The residual volume of air in the lungs a.is the amount expelled on a normal expiration b.remains until the chest cavity is opnened c.is also called the minimal air volume d. is the amount forcefully exhaled e.is also known as the complemental air We know that it's not a or c, but a different question was what major air volume is left in the lungs after forcibly exhaling and we came up with residual volume so I think we are a little confused on terminology. Thanks!