Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

Chemoreceptors play a role in the sense of ___ .

  1. a. taste
  2. b. smell
  3. c. touch
  4. d. hearing
  5. e. both a and b
  6. f. all of the above

Summary Introduction

Introduction: Somatic sensations arise when a stimulus excites a sensory neuron through an action potential. They are sensed by sensory receptors-mechanoreceptors, thermoreceptors, chemoreceptors, photoreceptors, and pain receptors. They are grouped on the basis of stimulus that they respond to.


Reason for the correct statement:

Chemoreceptors respond to specific molecules and chemical stimuli in the environment. The chemosensory systems function in the senses of smell (olfaction) and taste. The sensory organs for taste are taste buds on the tongue and olfactory receptors in the nasal cavity for the smell.

Option a. is given as “taste” and option b. is given as “smell”. Both are correct.

Option e. is given as “both a and b” Hence, option e. is correct.

Reasons for the incorrect statement:

Option a. is given as “taste”. The sense of taste is detected by chemoreceptors on the tongue...

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