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21 terms

The Breath of Life

STUDY
PLAY
Breathing
mechanism of gas exchange.
Respiration
Diffusion of gases across a semi-permeable membrane.
Respiratory System
Site of gas exchange.
Large enough
Needs to be ______ for the exchange of oxygene and carbon dioxide to occur at a rate to meet the needs of the organism.
Moist
Needs to be ______ so the oxygene and carbon dioxide can diffuse across the cell membrane.
Thin-walled
The respiratory surface must be ______ so diffusion of gases can occur rapidly.
Nostril
Conducts air into the nasal pasages
Moistens the air
The mucus in the nose ______ and the numerous capillaires that line the nose warms the air. This is to protect the delicate tisse of the lungs.
Pharynx
Connects the mouth and the nasal cavity.
There are other openings found here such as the ______
1) Esopagus
2) Trachea
3) Oral Cavity
4) Eustachian Tubes
Epiglottis
The ______ is a flap-like structure that covers the trachea when swallowing food.
Larnyx
Also called the voice box.
Trachea
Also called the wind pipe.
Semicircle cartilage rings
It contains ______ to pervent the trachea from collapsing.
Ciliated cells
It contains ______ that secrete mucus to trap foreign particles. The cilia propel the material to the nose and throat.
Bronchi
Branches off the trachea into each lung.
Bronchiole
Finer tubes branching off the bronchi inside each lung.
Alveoli
Tiny sac-like structure found at the end of each bronchiole.
This is where the ______ inside the lung.
Oxygene and carbon dioxide are exchanged.
Capillaires
Each alveolus is surrounded by ______.
300 million alveoli have a hanging surface of
70m^2