Hearing Improves in Middle Childhood Because the Tube in the Inner

question 169

Multiple Choice

Hearing improves in middle childhood because the tube in the inner ear that is often the site of ear infections in toddlerhood and early childhood has now matured to be longer and narrower than it was before.How does this help with ear infections?

• A)The tympanic membrane becomes less permeable.
• B)It allows the immune system to concentrate its efforts on this area.
• C)Children develop immunity to the bacteria that cause ear infections during this time.
• D)Less bacteria-containing fluid flows from the mouth to the ear.

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