Respiratory System
Nose
Filter air
Warms air
Humidifies membrane
Pharynx
Connects nasal and oral cavities to larynx
Has 3 divisions
Larynx and trachea are normally open
Esophagus is normally closed
Larynx
Passageway for air between pharynx and trachea
Cointains vocal chords
Contanis the glottis and epiglottis
Piece of cartilage that prevents food to go to the respiratiry track
Trachea
Connects larynx with primary bronchi
Supported by C-shaped cartilage rings
Contains cilia that sweep mucus
Bronchial tree
Primary bronchi
Secondary bronchi
Tertiary bronchi
Lungs
Divided into lobes
Each lobe is divided into lobules
Covered by a membrane called pleura
Right lung has 3
Left lung has 2
Alveoli
Surrounded by blood capillaries
Stay open to receive air
Gas exchange occur here