Little Kendra Is Three Years Old

question 118

Multiple Choice

Little Kendra is three years old.She almost never shows any signs of recognition when her parents are around and basically ignores other people.Kendra occasionally bangs her head repeatedly.Kendra most likely has ____.

• A) autistic spectrum disorder
• B) schizophrenia
• C) attention deficit hyperactivity disorder
• D) separation anxiety disorder

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Definitions:

Organs of Corti

Located within the cochlea of the inner ear, they are essential for converting sound vibrations into neural signals for hearing.

Frequency Theory

The theory of hearing that holds that hair cell receptors vibrate the same number of times per second as the sounds that reach them.

Neurons

Distinct cells in the nervous system tasked with sending information to other neurons, muscle cells, or glands.

Basilar Membrane

A structure in the cochlea of the inner ear that plays a critical role in the sense of hearing by vibrating in response to sound waves.