Describe how sound waves are transmitted from the outer ear to the auditory nerve.?
What will be an ideal response?
ANSWER:
?Sound waves enter the outer ear at the pinna, which collects and focuses sounds. Sounds collected by the pinna are then channeled through the auditory canal, which ends at the tympanic membrane, or eardrum, at the boundary between the outer and middle ear. The sound waves then reach three tiny bones in the middle ear known as ossicles. The ossicles amplify sound wave input by transferring sound energy from the air of the outer and middle ear to the fluid found in the inner ear via the oval window.
?
The inner ear contains a fluid filled cavity known as the cochlea, which contains specialized receptor cells that respond to vibrations transmitted to the inner ear. Vibrations transmitted by the bones of the middle ear to the oval window produce waves in the fluid of the vestibular canal of the cochlea that travel around the apex and back through its tympanic canal. As waves travel through the cochlea, the basilar membrane responds with its own wavelike motion. The movement of the basilar membrane causes the hair cells of the organ of Corti to move back and forth within the fluid of the cochlear duct. Bending the hair cells stimulates the release of neurotransmitters onto the cells of the auditory nerve.
You might also like to view...
An evolutionary psychologist might say, "The unique physiological response in this disorder, involving fainting at the sight of the feared object, may have evolved because fainting might inhibit further attack from a predator." What disorder is being discussed?
A. Blood-injection-injury phobia B. Agoraphobia with panic attacks C. Social anxiety disorder D. Animal phobia
At a movie theater, during a scary scene in which a male hero is preparing to defend himself from a monster, Juan finds his own legs and arms tensing up, as if he was going to have to defend himself from the monster. His behavior is most likely due to _
a. an overactive imagination b. the fact that humans have specialized neurons that cause us to mimic what others are doing c. the fact that young males tend to overempathize with male heroes in action movies d. scary scenes make almost everyone tense their arms and legs, no matter what is actually occurring on the screen
Because many men do not withdraw before orgasm, __________ is a relatively ineffective method of contraception
a. a condom b. rhythm c. coitus interruptus d. douching
On average, girls are first sexually abused at approximately what age?
A) Between birth and 2 years B) Between 3 and 5 years C) Between 6 and 12 years D) Between 15 and 18 years