Breathing...........Breathing...........and Humping
okay that was a lie, but if you are still wondering what the third main function of the respiratory system refer to my other two functions.
The three secondary functions of the respiratory system are vocalization, temperature control, and coughing / sneezing.
For gas exchange, to constantly supply the blood with oxygen and carbon dioxide. To regulate the pH of blood which can be determined by the concentration of carbon dioxide level in blood.
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The primary functions of the respiratory system is to: -supply oxygen to the blood -ventilate the lungs -excrete water vapour and carbon dioxide -maintain the pH (percent hydrogen) of blood -conduct respiration -regulate gas exchange -release energy
The main function of excretion is to rid the body of waste.
blood gas analysis, chest x-ray and lung function test
because the diaphragm helps the lungs with the breathing.<3
The respiratory system is the system in your body make of choclate and bricks
Answer=Respiratory System.Extra info....The following all belongs to Respiratory System.1.Trachea2.Bronchi and3.Bronchioles
The nervous, respiratory, endocrine
Organ trachea
The main function is the entry point for the application. Each program written in C or C++ will start at the first line in the main function, and cease execution once the main function returns control to the operating system (either via a return keyword in the main function, an exit(3) function call, or by "running off" the end of the main function). A program will not compile if it is missing the main function. Some variants of C++ have an alternate entry point (including those written for Microsoft Windows).
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Non-specific question
Three main functions of the nervous system are:1. To receive sensory information from outside and inside the body;2. To store & to process that information;3. To cause actions relating to that information toward maintaining life.