Where are the olfactory sensory neurons, and why is that site poorly suited for their job?

Video transcript

Welcome back, everyone. Let's look at our next question. What is the typical lifespan of olfactory sensory neurons? A 30 to 60 days. B 60 to 90 days. C 90 to 120 days or D 20 to 40 days. Well, olfactory sensory neurons are pretty unique among neurons and that they are continually replaced throughout their life by a process called neurogenesis. As we recall, most neurons, once they're dead, they're dead. Um but olfactory neurons are continually replaced, um Ne new neurons are generated in the olfactory epithelium and they differentiate into mature sensory neurons whose axons will go up to the olfactory bulb in the brain. So let's recall that typical lifespan of these neurons is just choice. A 30 to 60 days. So that's our answer on this one. Pretty straightforward. Let's move on to the next video.