1) Transport of oxygen into the body
2) Transport of carbon dioxide out of the body
breathing and eating
The respiratory system and the nervous system are the two systems used when breathing hard
The autonomic nervous system is dedicated to regulating subconscious functions such as heart rate, digestion, and breathing. It has two main branches - the sympathetic and parasympathetic nervous systems, which work together to maintain homeostasis in the body without conscious effort.
The first of the two functions of the digestive system is to break down nutrients. The second function is the absorption of nutrients.
The the respiratory system or "breathing system" has many different functions. The main function that the body relies on is to supply the body and organs with Oxygen with Inhalation and Exhalation. Two other things we rely on the respiratory system for is vocalization or speech, and coughing. To be able to speak air must pass from the lungs over the vocal cords. Coughing allows the body to expel foreign objects like virus' keeping the body safe and healthy.
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The autonomic nervous system controls the involuntary functions of the body, such as heart rate, digestion, and breathing. It has two branches: the sympathetic branch, which activates the body's "fight or flight" response, and the parasympathetic branch, which promotes relaxation and rest. Overall, the autonomic nervous system helps to maintain homeostasis and regulate vital bodily processes.
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 two main functions of the reproductive system are in the production of egg and sperm cells and in procreation. Other functions include the production of hormones and the transportation of cells.
Two functions of the male reproductive system are (1) Sexual Pleasure and (2) Procreation. Two main secretions of the male reproductive system are (1) Sperms and (2) Testosterone Hormone.
All organ systems regulate homeostasis for the body. I'm not sure which two are the most important. For example, the Regulatory System (lungs, trachea, etc.) regulate homeostasis by breathing. The Excretory System (Kidney, bladder, etc.) regulates homeostasis by removing wastes.
The systems controlling the whole human system are the vital systems in the body...they are:Airway&Breathing > Respiratory SystemCirculation >CardioVascular systemAbove two system form the ABC of Resucitation & for Maintainance of LifeThe Integrity & functional preservation of Central Nervous System are maintained by the above two systems.Preservation of Central Nervous System is the basis for a gud quality of life.