Final answer:
Pitch discrimination depends on the properties and shape of the basilar membrane in the human ear.
Step-by-step explanation:
The perception of pitch in the human ear depends on the properties and shape of the basilar membrane.
The mechanical properties of the basilar membrane, such as its thickness and flexibility, vary along its length. Different regions of the membrane vibrate according to the frequency of the sound waves, allowing us to perceive different pitches.
For example, the base of the basilar membrane responds best to high frequencies, while the tip of the membrane responds best to low frequencies.