Respiratory System Flashcards
Define respiratory system
the transportation of air in and out of the lunges while protecting it from particles. It is the exchange of oxygen and carbon dioxide
Nasal cavity
humidifies, warms, and filters the air, protecting the system from dirt
Pharynx
also known as the throat which connects the mouth, nose, and windpipe. It is involved in breathing, swallowing, and speech. It also has 3 sections: nasopharynx, oropharynx, and layngopharynx
Larynx
also known as the voice box is located between the pharynx and trachea. It plays a role in breathing, vocalizing, and swallowing
Lungs
the main and most essential organ in the system where gas exchange occurs inside. The right lung is slightly bigger than the left. The right lung has 3 lobes: superior, middle, and inferior, meanwhile the left side only has two lobes: superior and inferior lobe
Trachea
is a tube that brings air from the upper respiratory tract into the lungs. It warms and moisturizes the air while also catching debris and microbes.
Bronchi
are two large tubes that carry air to and from the lungs
Bronchioles
located inside the lungs. the bronchi branch into thinner and smaller tubes called bronchioles
Alveoli
at the end of the bronchioles are a bunch of tiny air sacs where gas exchange occurs
What happens inside the alveoli
The oxygen enters the alveoli and into the alveolus. As blood flows through the capillaries, the oxygen molecules from the alveolus diffuse into the capillary which causes oxygenation of the RBCs. The carbon dioxide molecules are then released into the alveolus where they are collected in an alveolar chamber and then make their way back into the bronchioles until they get breathed out.