When a sound strikes your ear, your eardrum vibrates with the sound waves, fast or slow, soft or hard. These variations in vibration provide us with important information about the nature of the sound we are hearing. Some sounds produce a vibration in the eardrum as small as a billionth of a centimeter - only one-tenth the diameter of a hydrogen atom.
There are three tiny bones in the middle ear called the hammer, anvil and stirrup, these bones form the bridge from the eardrum into the inner ear. They pick up the vibrations from the eardrum, amplifying them even more, before safely transmitting them on to the inner ear or cochlea via the oval window.
The inner ear, or cochlea, resembles the circular shell of a snail, and houses a system of tubes which are filled with a watery fluid. As the sound waves pass through the oval window, the fluid begins to move, setting approximately 25,000 tiny hair cells in motion. These tiny hairs transform the vibrations into electrical signals that travel along the auditory nerve to the brain.
Our hearing is designed to be more sensitive to high-pitched sounds than to lower sounds. If we had just a little more sensitivity to lower-pitched sounds, we would continuously be distracted by the internal sounds of our body, including the blood rushing through our arteries. In fact, to help prevent this, there are no blood vessels at all in that part of the ear where vibrations are turned into electrical impulses.
Luke 11:28 But He said, "More than that, blessed are those who hear the word of God and keep it!"
Sources:
www.creationmoments.com/radio/transcripts/insulated-ears
www.ahschicago.com/how-does-your-ear-work
www.lenardaudio.com/education/10_mics.html
