Which Two of the Following Appear to Play a Major

question 21

Multiple Choice

Which two of the following appear to play a major role in learning and attention?

• A) serotonin and dopamine
• B) norepinephrine and dopamine
• C) norepinephrine and serotonin
• D) GABA and acetylcholine

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Definitions:

Ovum

The female reproductive cell or egg, which, when fertilized by a sperm, can develop into a new organism.

Glans Penis

The bulbous tip at the end of the penis, highly sensitive to stimulation.

Skin

A body covering that acts as a primary barrier against external pathogens and helps in thermoregulation and sensation.

Seminiferous Tubules

Narrow, coiled tubules within the testes where spermatogenesis, the process of sperm production, occurs.