Which of the Following Statements About Olfaction,the Sense of Smell,in

question 25

Multiple Choice

Which of the following statements about olfaction,the sense of smell,in terrestrial vertebrates is(are) true?
I-Involved chemoreceptors are located in the upper portion of the nasal passages.
II-These receptors are bipolar neurons whose dendrites end in tassels of cilia that project into the nasal mucosa.
III-The axons of these receptors project directly into the cerebral cortex.
IV-Thousands of different smells can be discerned as opposed to only four kinds of taste.

• A)I and II
• B)II,III,and IV
• C)I,III,and IV
• D)I,II,III,and IV

---

Definitions:

Units

Fundamental quantities used to measure, count, or quantify objects or events.

Diminishing Marginal Utility

See Law of Diminishing Marginal Utility.

Satisfaction

The contentment one feels when one's needs, desires, or expectations are fulfilled or surpassed.

Diminishing Marginal Utility

A principle stating that as a consumer consumes more of a good or service, the utility (satisfaction) gained from each additional unit decreases.