Which Statement Is Unsubstantiated

question 21

Multiple Choice

Which statement is unsubstantiated?

• A)Intense endurance exercise is associated with the release of three types of endogenous opioids into the blood,of which endorphins are one type.
• B)The hypothesis that released blood chemicals,such as endorphins,is responsible for positive changes in mood and affect is based largely upon logic and not cause and effect research.
• C)Endogenously produced endorphins mimic the effects of injected morphine in rats.
• D)The release of endorphins into the blood stream,during intense aerobic exercise,is responsible for the "runners high" and for positive changes in mood and affect.

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Definitions:

Sensorineural Hearing Loss

A type of hearing loss resulting from damage to the inner ear or auditory nerve pathways.

Cochlear Implant

A medical device that bypasses damaged structures in the ear and directly stimulates the auditory nerve, helping to provide a sense of sound to a person who is profoundly deaf or severely hard of hearing.

Down Syndrome

A genetic chromosome 21 disorder causing developmental and intellectual delays.