15.5-6

The organ of smell is a yellow-tinged patch (about 5 cm2) of pseudostratified epithelium, called the ------- epithelium.576

• olfactory

• Auditory

• Nasal

• stratified

Smell is difficult to research because any given odor may be made up of ________ of different chemicals (called odorants).576

• 10s

• hundreds

• thousands

• a couple

There are about 350 different odorant receptors in humans.577

• 500

• 50

• 350

• 1000

For us to smell a particular odorant, it must be volatile—that is, it must be in the "----" state as it enters the nasal cavity.

• gaseous

• liquid

• solid

• smallest

Transduction of odorants uses a receptor linked to a ---- protein.577

• amino

• k

• L

• G

How many taste buds?578

• 100

• 1,000,000

• 10,000

• 1000

Moste taste buds are found in the-----578

• dermal layer

• epithelium

• papillae

• jawline

How many types of papillae have taste buds?578

• 10

• 3

• 1

• 124

The ---- epithelial cells are the receptor cells for taste.578

• gustatory

• stratified

• papillae

• microvili

There are at least --- kinds of gustatory epithelial cells.578

• three

• one

• two

• we dont know