Breathing Flashcards
(9 cards)
What is the primary function of the respiratory system?
The primary function is gas exchange, which involves taking in oxygen and getting rid of carbon dioxide.
Where does gas exchange take place?
Gas exchange takes place in the lungs.
What are the main components of the respiratory system?
The main components include the nasal cavity, larynx, trachea, bronchi, bronchioles, and alveoli.
What is the role of the diaphragm in breathing?
The diaphragm is a muscle that moves up when it relaxes and down when it contracts, helping to draw air in and push it out of the lungs.
What happens to the air we breathe in?
The air we breathe in goes through the trachea, which splits into two tubes called bronchi, each leading to a lung.
What are bronchioles?
Bronchioles are smaller tubes that the bronchi split into, leading to the alveoli.
What are alveoli?
Alveoli are small air sacs in the lungs where gas exchange occurs.
What happens to oxygen in the alveoli?
Some of the oxygen in the inhaled air passes into the bloodstream to be used for respiration.
What is carbon dioxide in the context of respiration?
Carbon dioxide is a waste product that is breathed out.
