Question

Which of the following membranes given us the ability to different pitches of sound?

• A. Membrane covering the round window
• B. Tympanic membrane
• C. Tectorial membrane
• D. Basilar membrane

Answer 1

The correct option is D Basilar membrane

The human ear can detect a wide range of frequencies, from the low rumbles of distant thunder to the high-pitched whine of a mosquito. The sensory cells that detect these sounds are called hair cells, named for the hair-like strands that cluster on their tops. Hair cells are spread across a flat surface called the basilar membrane, which is rolled like a carpet and tucked into a snail shell-shaped structure in the inner ear called the cochlea. Each of our roughly 16,000 hair cells is dedicated to a narrow frequency range. These cells are ordered along the basilar membrane according to the frequencies they detect.

So the correct option is 'Basilar membrane'.