Search SchoolNGR

Friday, 10 April 2026
Register . Login

The correct sequence for the perception of smell in mammals is?

The correct sequence for the perception of smell in mammals is?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Chemicals --> olfactory nerve endings --> brain
  • B Dissolved chemicals --> nasal sensory cells --> brain
  • C Chemicals --> mucus membrane sensory cells --> brain
  • D Dissolved chemicals --> sensory cells --> olfactory nerve --> brain
Correct Answer: Option D
Explanation:
In mammals(humans), the process of olfaction begins when volatile molecules enter the nasal cavity and activate receptors in the olfactory epithelium (OE).

The olfactory receptor (OR) proteins are located in hair-like projections of the olfactory sensory neurons (OSNs).

Share question on: