Hearing Sound Flashcards
When you hear a sound you can usually tell which direction the sound is coming from because…
Humans have a pair of ears, one on each side of their heads
The two ears detect the sound waves arriving at
Slightly different times, there is less than one thousand of a difference. Because of the timing difference our brain can work out the direction of the sound
Ears are sensitive organs that convert…
Sound Waves to Electrical signals that travel to our brains
The outer ear that is shaped to collect sound energy is called…
The Pinna
The tube that connects this outer part of the ear to the middle ear is the…
Ear Canal
The thin layer of tissue that separates the outer part from the internal part is called…
The Eardrums
The eardrum…
Transmits the sound inwards and protects the rest of the ear from infection.
In the inner ear there are three small bones called…
Ossicles
The Ossicles work together to pass the energy of the sound wave to the…
Cochlea.
The cochlea is a…
Coiled tube filled with fluid and tiny hair-likes structure.
When vibrations reach the cochlea the hairs…
Are moved backwards and forwards
The hairs in the cochlea send…
Electrical signals to the brain along a set of nerves. Then our brains interprets these signals as sound.
Ears are also important in our sense of…
Balance
What part detects how our head is tilted or if we are rotating?
Three tubes called semi-circular canals
So when we spin around the fluid in the semi-circular canals spins too which is why we get dizzy because…
The fluid continues on moving even when we have stopped
