Respiratory system functions

Answer 1

There are two portions of the respiratory system: the conducting portion and the respiratory portion.

The Conducting Portion: to provide a passageway through which aire can travel to and from the lungs, and to moisten and cleanse the incoming air. This portion consists of the nasal cavities, pharynx, larynx, trachea, bronchi, and bronchioles up to and including the terminal bronchiole.

The Respiratory Portion: gas exchange (oxygen and carbon dioxide) between the blood and the air. This portion includes the respiratory bronchioles, alveolar ducts and sacs, and the individual alveoli.

Answer 2

To transfer the gases between the environment and the blood (external respiration). The blood gases O2 (Oxygen) and CO2 (Carbon Dioxide) are transported to and from the cells as needed and this increases at the onset of exercise. The respiratory system is also involved in the maintenance of blood Ph and non-respiratory movements such as coughing, speaking, singing and sneezing also occur. The valsava manoeuvre also helps increase the intra-abdominal pressure to help brace the lumbar spine during lifting movements. A small amount of water loss occurs through the lungs as well.

Answer 3

The respiratory system is responsible for taking in oxygen and expelling carbon dioxide from the body. It includes organs such as the lungs, trachea, and diaphragm. These organs work together to facilitate gas exchange and help maintain the body's acid-base balance.