The Breath of Life

21 terms by mlister 

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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

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