What is the collective purpose of nasal hair, mucus secretions in the naspopharyngeal tract, phagocytic cells in the throat, bronchial lysozyme, sneezing, and coughing? To maintain a sterile environment in the oropharynx. To keep normal flora in the oropharynx from entering the eustachian tube causing infection. O To keep normal flora in the oropharynx from causing infection. To keep organisms from entering the lower respiratory tract and causing infection.

What is the collective purpose of nasal hair, mucus secretions in the naspopharyngeal tract, phagocytic cells in the throat, bronchial lysozyme, sneezing, and coughing? To maintain a sterile environment in the oropharynx. To keep normal flora in the oropharynx from entering the eustachian tube causing infection. O To keep normal flora in the oropharynx from causing infection. To keep organisms from entering the lower respiratory tract and causing infection.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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