Respiratory
Respiratory System
The Respiratory System (pronounced: res-pi-ra-tory sys-tem) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The term comes from the Latin respirare which means "to breathe".
Anatomy
The anatomy of the respiratory system can be divided into the upper and lower respiratory tracts. The upper respiratory tract includes the nose, nasal cavity, pharynx, and larynx. The lower respiratory tract includes the trachea, bronchi, and lungs.
Function
The primary function of the respiratory system is to take in oxygen and expel carbon dioxide. This is achieved through the process of breathing and cellular respiration.
Diseases
There are many diseases that can affect the respiratory system, such as asthma, COPD, lung cancer, pneumonia, and tuberculosis.
Related Terms
- Alveoli: Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
- Bronchioles: Small branches of the bronchi that lead to the alveoli.
- Diaphragm: A dome-shaped muscle at the bottom of the lungs that helps with breathing.
- Pulmonary circulation: The portion of the cardiovascular system which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart.
External links
- Medical encyclopedia article on Respiratory
- Wikipedia's article - Respiratory
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