Fill in the Blanks


1		Sound is the movement of air molecules brought about by a source of .


2		is a feature of wave patterns that allows us to distinguish between loud and soft sounds.


3		The theory of hearing states that different areas of the basilar membrane respond to different frequencies, whereas the theory of hearing suggests that the basilar membrane vibrates as a whole in response to sound.


4		The vibrating structure that runs through the center of the cochlea, dividing it into an upper chamber and a lower chamber and containing sense receptors for sound is the .


5		Some structures of the inner ear are related more to our sense of than to our hearing.


6		There is increasing evidence that can also act as a hidden means of communication for humans.


7		In addition to the four basic stimulus qualities, there is a controversial fifth category that offers as a fundamental taste.


8		The receptor cells for taste are located in the , which are distributed across the tongue and other parts of the mouth and throat.


9		The play a crucial role in survival, making us aware of potential danger to our bodies.


10		The theory of pain suggests that particular nerve receptors in the spinal cord lead to specific areas of the brain related to pain.


11		theory suggests that the lack of pain in the "hook swing" ritual in India is caused by a message from the participant's brain which shuts down the pain pathways.