Your elderly neighbor wears hearing aids. Without them, he can't hear you knocking on his door. Do you think he wears the hearing aids for sensorineural deafness or conduction deafness? Explain your choice and differentiate between the causes of these two types of deafness
What will be an ideal response?
The neighbor likely has conduction deafness, a condition for which hearing aids is helpful. Conduction deafness results when something interferes with the transmission of sound to the inner ear structures, such as ear wax buildup or fusion of the ossicles. Sensorineural deafness results from degeneration or damage to the spiral organ of Corti, the cochlear nerve, or the neurons of the auditory cortex. In other words, the hearing aids assist with helping those hear who have mechanical problems with their ear structures (conduction deafness) rather than those with nervous system problems (sensorineural deafness).
You might also like to view...
Match the following:
A) Epiphyseal line B) Diaphysis C) Epiphyseal plate D) Appositional growth E) Chondrocytes 1) The cells responsible for the early stages of endochondral ossification. 2) The growth pattern of bone in which matrix is laid down on the surface. 3) The area of long bones where cartilage cells are replaced by bone cells. 4) The appearance of this structure signals the end of bone growth. 5) Area where bone longitudinal growth takes place.
The human integumentary system includes
A) bones and muscles. B) the epidermis, dermis, and subcutaneous layer. C) skin, nails, hair follicles, and sweat glands. D) only one type of tissue.
A dog has decreased renal perfusion. What will this do to the blood levels of a drug excreted through the kidneys? a. It will decrease. b. It will increase. c. It will remain normal
d. It will totally stop.
Changes in pH and PCO2 alter the shape of the oxygen equilibrium curve for the respiratory pigments in many species, a phenomenon termed the __________
Fill in the blank with correct words.