Upper respiratory structure(s) that create air turbulence to warm and moisten air is/ are

Structure that prevents food from entering the trachea is the

What prevents the trachea from collapsing?

What is the site of gas exchange in the lungs?

What nervous centers control respiration?

What causes air to enter the lungs during inhalation?

The amount of air exchanged during quiet respiration is the

The amount of air that remains in the lungs after forced expiration is the

Vital capacity is

The most powerful drive for respiration is

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