1. Taste and Smell (pg 4)

2. Smell (Olfactory Sense)
• Humans can recognize around 10,000
different odors

3. Smell (Olfactory Sense)
• Humans can recognize around 10,000
different odors
• Receptors: Neurons located in the superior
portion of the nasal cavity. 100 million of
them. Chemoreceptors

4. Smell (Olfactory Sense)
• Humans can recognize around 10,000
different odors
• Receptors: Neurons located in the superior
portion of the nasal cavity. 100 million of
them. Chemoreceptors
• The axons travel through the cribiformplate of
the ethmoid bone to the hypothalamus and
limbic lobe of the brain, which also control
emotion and long-term memory

5. Taste (Gustatory Sense)
• 5 primary tastes: sour, sweet, bitter, salty, and
umami

6. Taste (Gustatory Sense)
• 5 primary tastes: sour, sweet, bitter, salty, and
umami
• Other flavors are combinations of the five
primary tastes, plus olfactory and tactile
sensations

7. Taste (Gustatory Sense)
• 5 primary tastes: sour, sweet, bitter, salty, and
umami
• Other flavors are combinations of the five
primary tastes, plus olfactory and tactile
sensations
• Receptors = taste buds. ~10,000 per person.
Most are on the tongue, but also found on
roof of mouth and throat. Chemoreceptors.