The Smell

                       THE SMELL
The smell is one of the five senses, its function is to  identify the odors around us.
This sense is formed by detection cells of the nasal cavity of vertebrates, and in the antennae of invertebrates.
In humans, smell occurs when odorant molecules arrive to specific sites on the nose.
There are receptors designed to detect the presence of the smell.
Many vertebrates, including most mammals and reptiles, have two distinct olfactory systems—the main olfactory system, and the accessory olfactory sistem.

 This is a photo of  the mice olfactory sistem.

The organ of the smell is the nose,composed by:
1.Olfactory bulb:
Connects both nasal and neuronal parts of the smell sense.
2.Mitral cells:
Are neurons that are part of the olfactory sistem.
3.Bone:
This bone holds the nose. 
4.Nasal epithelium: 
Is a type of cells called: tissue.
5.Glomerulus:
It is a part of the bulb connected to the brain.
6.Olfactory receptor neurons:
They are cells within the olfactory sistem.

This is a video of olfaction process:

I  wish you enjoy it!