The hammer, anvil, and stirrup are the three:
A) components of the eardrum.
B) tiny bones in the middle ear.
C) parts of the pinna.
D) components of the basilar membrane.
Answer: B
Rationale: The middle ear consists of three tiny moveable bones, called ossicles (known individually as the hammer, anvil, and stirrup). The eardrum is attached to these bones, so any movement of the eardrum due to sound vibrations results in movements of the ossicles.
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