Smell, Taste and skin Flashcards
Olfactory mucosa
Location of receptor cells
Olfactory receptor neuron
over 350 of them!
- allow for perception of a trillion diff odours!
- receptors send messages to glomeruli
What are smells?
The combination of many different odourant molecules:0
Is smell difficult to study?
Yes
Why is smell difficult to study?
- Chemicals that are very similar in structure can produce different smells
- Some molecules with different structures can sometimes smell the same
What is taste defined as?
It is the correlation between molecular properties of stimuli and effect on body
What are the 5 tastes?
- Sweet
- Salty
- Sour
- Bitter
- Umami (savoury)
What are the bumps on the tongue called?
Papillae
What are the four kinds of papillae?
- Fungiform
- foliate
- Circumvallate
- Filiform
Fungiform papillae
look like mushrooms, located on the sides of tongue
Foliate papillae
Look folded, located at the back of the tongue
Circumvallate papillae
Small mounds, located at the back of tonge
Filiform papillae
- No taste buds
- Located all over the tongue (fuzzy looking)
What is the taste bud?
There are 50-100 taste-sensitive cells in EACH taste bud
What happens when chemicals bind to receptor sites on the taste pore?
Transduction
