When you reference olfactory cells, you are talking about the sense of smell. These nerve cells transmit what you smell to your brain so that it can decipher what it is you are smelling. There are so many smells though, and a person's olfactory cells cannot capture all of them nor can your brain decipher all of them. In a dog however, they have many, many more of these cells and a larger part of their brain is dedicated to their sense of smell. In short, they can smell a LOT better than we can.
SMELL
The olfactory epithelium contains 10 million olfactory cells. Since you have two nostrils, you have a total of 20 million smell cells!
The olfactory epithelium contains 10 million olfactory cells. Since you have two nostrils, you have a total of 20 million smell cells!
Smell
Generally, around 20 million.
No, it lies in a pretty poor condition in humans. In fact, dogs can smell 3000 times better than humans. That is why dogs can smell criminals miles away, and humans can't smell a rose a foot in front of our faces. The olfactory receptor cells lie in a small patch of membrane called the olfactory epithelium.
The olfactory epithelium occupies an area of about 5 cm2 in the roof of the nasal cavity. The specialized receptor cells in the olfactory epithelium are surrounded by supporting cells, non-sensory epithelial cells. The olfactory receptor cells are bipolar neurons whose olfactory cilia extend outward from the epithelium.
Olfactory nerves, definetly. We're studying this currently in my grade.
Smelling
These cells are called sustentacular cells or supporting cells. They surround and support the olfactory receptor cells in the olfactory epithelium. They provide physical support, nourishment, and electrical insulation to the olfactory receptor cells, helping to maintain their function.
In the olfactory nerves of the nose
Olfactory hair cells