![]() The major entrance and exit for the respiratory system is through the nose. Watch this video:Īnatomy (Structures) of the Respiratory System The Nose and its Adjacent Structures The major respiratory structures span the nasal cavity to the diaphragm. ![]() Portions of the respiratory system are also used for non-vital functions, such as sensing odors, speech production, and for straining, such as coughing.įigure 7.1 Major Respiratory Structures. The major structures of the respiratory system function primarily to provide oxygen to body tissues for cellular respiration, remove the waste product carbon dioxide, and help to maintain acid-base balance. Although oxygen is critical for cells, it is the accumulation of carbon dioxide that primarily drives your need to breathe. A typical human cannot survive without breathing for more than three minutes, and even if you wanted to hold your breath longer, your autonomic nervous system would take control. How long you can hold your breath as you continue reading… How long can you do it? Chances are you are feeling uncomfortable already. If you hold your breath for longer than 3 minutes your autonomic nervous system will take control.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |