What is a common pathophysiological cause of decreased olfaction in older adults?
A) Increased number of sensory cells
B) Lower thresholds for common odors
C) Injury of the olfactory mucosa
D) Increased neurotransmitters

Question

Quizplus · Accepted Answer

Injury of the olfactory mucosa causes changes in olfactory function.The three causes that account for 60% of problems with loss of smell all involve injury to the olfactory mucosa.Increased number of sensory cells is incorrect because with normal age-related changes these cells decrease,causing loss of smell.The thresholds for common odors are 11 times higher for older than for younger people.Increased neurotransmitters decrease with age and cause loss of smell.

What Is a Common Pathophysiological Cause of Decreased Olfaction in Older