Smell

Question 1

What helps with our sense of smell (Olaction)?

Answer 1

A pair of organs in the nose.
1)olafactory epithlium
2)olafactory glands

Question 2

Olafactory epithilum

Answer 2

where the olafactory receptors, supporting cells, and basal cells are

Question 3

What type of receptors are in the nose?

Answer 3

Chemorecpetors

Question 4

Olafactory glands

Answer 4

Mucus secreting glands that cover the epithilium. 2 functions:
1)decrease damage from dust and debree
2)create a fluid medium

Question 5

What must happen before an odor stimulates olafactory receptors?

Answer 5

they must diffuse into the mucus first!!

Question 6

What makes something smelly?

Answer 6

-wetness
-molecular complexity. more complex the molecule is=more smelly
-how fresh/recent odor is

Question 7

Process of smelling
5 steps

Answer 7

1.odor goes up the nasal cavity where it sticks to mucus membrane.
2.Diffuses across. molecules cause change in membrane permiablilty that cause an AP
3. AP gets sent to olafactory bulb
4.Goes to olafactory nerve
5. Hypothalamus to thalamus to olafactory cortex