Olfactory System

Question 1

smell

Answer 1

combination of primary odors detectable by brain

Question 2

7 primary odors

Answer 2

1. floral
2. ethereal
3. camphorates
4. musky
5. peppermint
6. pungent
7. putrid

Question 3

olfactory receptors

Answer 3

• located in olfactory epithelium of nasal cavity roof

- bipolar, part of olfactory nerves

Question 4

olfactory bulbs

Answer 4

paired masses of gray matter where olfactory nerve axons synapse with cell bodies of the olfactory pathway

Question 5

olfaction - step 1:

Answer 5

airborne chemical substances (dissolved in fluid) reach surface of nasal mucus membranes

Question 6

after substance on membranes - step 2:

Answer 6

• olfactory receptors activate

- nerve impulses sent through ethmoid bone to olfactory bulbs

Question 7

after impulses at bulbs - step 3:

Answer 7

• olfactory nerve axons synapse with cell bodies of olfactory pathway
• axons form olfactory tracts that carry info to temporal lobes

Question 8

after impulse at temporal lobe - step 4:

Answer 8

signals are interpreted as smell in primary olfaction area