The Diagnostic and Statistical Manual of Mental Disorders Is Currently

question 124

Multiple Choice

The Diagnostic and Statistical Manual of Mental Disorders is currently in its _____ edition.

• A)third
• B)fourth
• C)fifth
• D)sixth

---

Definitions:

Olfactory Epithelium

A mucous membrane at the top of the nasal cavity; contains the olfactory receptor neurons that respond to airborne molecules called odorants.

Glomeruli

Sites in the brain’s olfactory bulb where signals from the smell receptors converge.

Odorant Sites

Locations on olfactory receptors where odorant molecules bind, initiating the process of smell perception.

C-Fibers

C-fibers are slow-conducting nerve fibers that transmit thermal, mechanical, and chemical pain signals to the central nervous system.