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Respiratory System

Across
Very small hairs that line the bronchial tubes.
An entrance of air into the respiratory system.
A strong wall of muscle that creates suction in the chest that draws air in and expands the lungs.
Large tube that carries air to lungs.
Upside down tree
Part of the blood that contains iron, which attaches to oxygen and carried to body.
The voice box.
Down
Small blood vessels that are embedded in alveoli that allow transfer of oxygen to blood.
The vessel that leads from the mouth and throat to the stomach.
Small sacs that are final place that air goes when breathed in.
Large sacs that expand with air in chest cavity.
Primary entrance of air into the respiratory system