Addictive Drugs Do All of the Following EXCEPT

question 98

Multiple Choice

Addictive drugs do all of the following EXCEPT

• A)cause the neurotransmitter acetylcholine to be released, resulting in intensified feelings of fear and paranoia.
• B)fool brain-reward pathways creating a compulsion to repeat the drug experience.
• C)stimulate a brain region called the nucleus accumbens.
• D)physically change the brain's reward circuitry, making it harder for the addict to overcome his or her addiction.

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Definitions:

Seminiferous Tubules

Narrow, coiled tubules within the testes where sperm are produced.

Cremaster

A muscle that raises and lowers the testes in response to temperature changes and sexual arousal, helping regulate testicular temperature.

Dartos

is a layer of smooth muscle in the scrotum that contracts in response to cold, wrinkling the scrotal skin and helping to regulate the temperature of the testes.

Scrotal Sac

The pouch of skin holding and protecting the testicles in male mammals, also aiding in temperature regulation for spermatogenesis.