Smelling

By: Brandt KelbaughWil Rader Zach Kreis Jun Lee

Sense of

Smell

Key Points

Smell -

is the special sense through which odors are perceived. It occurs when an stimuli binds to a receptor within the nasal cavity, transmitting a signal through the olfactory system.

Receptors

Nerve Pathway

Organs

Olfactory organs are located above the air pathway in the top of the nasal cavity.

The sense of smell is created by the stimulation of Chemoreceptors which respond to changes in chemical concentrations.

Once the chemoreceptors are stimulated, the impulse goes from O. nerves, O. bulbs, O. tracts, to the limbic system and O. cortex.

Stimulation

Adaptation

Your sense of smell declines by 50% within 1 secenod after stimulation

Olfactory receptors rapidly undergo sensory adaptation

This is what an olfactory recpector looks like!