The greatest risk of death from a heart attack occurs in the first ____ after the onset of symptoms.

Medical offices may have differing versions of the accepted ________________ that are used in that facility

Fill in the blank(s) with correct word

Collectively, the nose, oral cavity, pharynx, epiglottis, and larynx make up the

A) nasopharynx. B) laryngopharynx. C) upper respiratory system. D) oropharynx.