Taste and Smell

Review Questions

Which of the following has the fewest taste receptors?

  1. fungiform papillae
  2. circumvallate papillae
  3. foliate papillae
  4. filiform papillae

Hint:

D

How many different taste molecules do taste cells each detect?

  1. one
  2. five
  3. ten
  4. It depends on the spot on the tongue.

Hint:

A

Salty foods activate the taste cells by _____.

  1. exciting the taste cell directly
  2. causing hydrogen ions to enter the cell
  3. causing sodium channels to close
  4. binding directly to the receptors

Hint:

A

All sensory signals except _____ travel to the _____ in the brain before the cerebral cortex.

  1. vision; thalamus
  2. olfaction; thalamus
  3. vision; cranial nerves
  4. olfaction; cranial nerves

Hint:

B

How is the ability to recognize the umami taste an evolutionary advantage?

  1. Umami identifies healthy foods that are low in salt and sugar.
  2. Umami enhances the flavor of bland foods.
  3. Umami identifies foods that might contain essential amino acids.
  4. Umami identifies foods that help maintain electrolyte balance.

Hint:

C