Speech audiometers are normally used to determine ______________
Answer: speech reception thresholds for diagnostic purposes
Which threshold of hearing is measured by a pure-tone audiometer?
Answer: air-conduction and bone-conduction thresholds of hearing
__________ is specialized equipment, which is used for the identification of hearing the loss in individuals.
If I1 and I2 are two intensities in watts per square centimetre, then the number of decibels with which they are related can be expressed as _________
What is the unit of dB?
Decibel expresses the logarithm of the ratio between two sound _________
Answer: intensities, powers and pressures
Sound intensity is proportional to the _________ of sound pressure.
Unit of sound intensity ________
Name the bone that rests upon the lower end of the cochlea and passes the vibrations directly into the fluid within.
The human ear responses to vibrations ranging from ___________
The major function of the middle ear is ____________
Answer: to transfer movements of the air in the outer ear to the fluid-filled chambers of the inner ear
The middle ear is exposed to atmospheric pressure only through the _______
The tympanic membrane separates the ear canal from the _____________
Answer: middle ear cavity
Cochlea is present in the
Auditory nerve communicates information from ears to
Semicircular canals are filled with
How many semicircular canals are present in the Inner ear?
We can hear sounds in frequeney range of
Some sounds can enter the inner ear through the bones of the skull. This is called
Hair like cilium projects from each receptor cells of Basilar membrane into endolymph of the