Samuels Respiratory System

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This disorder results when air sacs lose elasticity and breakdown resulting in loss of respiratory surface of lungs.

The two main branches of trachea which enter the lungs is the ______.

The site of respiratory gas exchange by diffusion is the ______.

Air first enters your respiratory system through your ______.

This disorder results when the alveoli fills with fluids and mucus resulting in coughing and breathing difficulties.

The smallest air tubes which enter lungs lined with cartilage is the ______.

The opening to the trachea is the ______.

This disorder results when the bronchioles contract due to a reaction to an external substance.