A)Auricle
B)Pinna
C)External acoustic meatus
D)Tympanic cavity
E)All of these structures are parts of the external ear.

A)Cochlea
B)Tympanic membrane
C)Vestibule
D)Semicircular canals
E)All of these structures are part of the bony labyrinth.

A)Different sound wave frequencies are perceived as different degrees of loudness.
B)The units for sound wave frequency are hertz (Hz).
C)Different sound wave frequencies stimulate specific hair cells in certain portions of the spiral organ.
D)Sound wave frequency can be reported in waves per second.
E)All of these are true of sound wave frequency.