The Respiratory System

Breathing / Respiratory System

* Network of organs and tissues that help you breath


* Helps your body absorb oxygen from the air so your organs can work

Trachea

* Empty tube which is separated into two branches that serve as passageway of air into the lungs

Bronchi

* Two branching tubes

Bronchioles

* Hair-like tubes entering each lung

Alveoli

* Air sacs
* Bubble-like branch structures connected to the bronchioles
* Exchanging of gases

Nose

* Main organ where air enters and filters it

Nasal cavity

* Humidifies and warms the inspired air
* Removes debris/airborne particles

Pharynx

* Receives air from the nasal cavity and air, food and water from the oral cavity

Larynx

* Also known as the voice box
* Protects lower respiratory tract from getting food into the trachea while breathing

Lungs

* Allows oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out

Diaphragm

* Primary muscle used in respiration
* Contracts as you breathe in and out