Hearing Aids May Correct Many Forms of Conduction Deafness, but They

question 12

Multiple Choice

Hearing aids may correct many forms of conduction deafness, but they do little to rectify problems caused by _________ deafness.

• A)permanent
• B)congenital
• C)mechanical
• D)nerve

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Definitions:

Negatively Charged Ions

Ions that have gained one or more electrons, resulting in a net negative charge.

Myelin Sheath

A fatty layer that encases the axons of some neurons, enhancing the speed at which nerve impulses travel.

Neuron Fires

The process in which a neuron transmits an electrical impulse along its axon, resulting in the release of neurotransmitters into the synapse, to communicate with other neurons or muscles.

Cell Body

The spherical part of a neuron that contains the nucleus and connects to the dendrites and the axon, serving as the neuron's metabolic center.