Olfaction

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AP Psychology › Olfaction

Questions 1 - 2
1

Which of the following would constitute the greatest loss to a professional wine taster or food critic?

Olfactory loss

Vestibular loss

Damage to the striate cortex

Damage to the semicircular canals

All of these

Explanation

Assuming that a food critic or wine taster most values their ability to perceive the flavors and aromas of these consumable items, then a loss of their sense of smell—olfactory loss—would be the greatest of these misfortunes they could suffer. The vestibular sense is that which informs us as to the orientation of our bodies in space. The semicircular canals contribute to this sense, and are housed within the inner ears. The loss of this sense might not compromise a food critic or wine taster as severely in their professional life. The striate cortex is a key component of the visual cortex, and damage therein would likely result in partial or total blindness. This would not hinder the food critic or wine taster's abilities to perceive their foods or wines however.

2

Which of the following is true regarding olfaction?

There are approximately three hundred and fifty receptor types

Each glomerulus receives input from multiple types of receptors

Each receptor responds to only one molecule

Every molecule causes the same strength of response when it stimulates a receptor

None of these

Explanation

There are about three hundred and fifty receptor types involved in olfaction. Each receptor responds to more than one molecule, but with different strengths. Receptors make their first synapse with glomeruli, but each glomerulus receives input from only one type of receptor.

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