A new mom takes her baby son on an airplane trip.On descent,the child begins to cry vociferously,and does not quiet down until a few minutes after landing.At the next well-baby visit,the pediatrician explains that the eustachian tube in infants is very short and horizontally oriented,resulting in difficulty in clearing pressure from the middle ear.The eustachian tube forms from a persisting portion of a pharyngeal pouch that remains connected to the pharynx.Which pharyngeal pouch forms the eustachian tube?
A) First
B) Second
C) Third
D) Fourth
E) Fifth
Correct Answer:
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