Chapter 24.2 - Respiratory System

" Now you know why I will not tell funny jokes "

Respiration

Pharynx

Larynx

Trachea

Bronchi (Bronchus)

          Bronchioles

          Alveoli

Epiglottis

          Heimlich maneuver

Pleural membrane

Diaphragm

Intercostal muscles

Inspiration

Expiration

Tidal Volume

Vital Capacity

Respiratory pigments

          Hemoglobin

                    Heme

Atmospheric air

Exhaled air


                                                     

Pathway of Air:

Mouth or nose (hairs act as a filter) ------> Pharynx (shared by digestive and respiratory systems) -------> Larynx (contains vocal cords - voice box) -------> Trachea (mucus elevator) ------> Bronchi (one bronchus to each lung) -------> Bronchioles (million per lung) ------> Alveoli (clusters of tiny air sacs).

Composition of : Atmospheric air: Exhaled air: 21% - Oxygen 16% - Oxygen .04% - CO2 4.4% - CO2 79% - Nitrogen 79% - Nitrogen

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Last updated on 20 October 2006