The most powerful respiratory stimulus for breathing in a healthy person is ________.

The primary immune response ________.

Absorbs water and forms feces

Amount of air than can still be exhaled forcibly after a normal exhalation                                                                       

A protein molecule will be digested by enzymes secreted by–

A normal respiratory rate for a young adult would be–

Structure attached to the lesser curvature of the stomach

Total amount of exchangeable air

Fever ________.

Material which covers the tooth root is called–