What covers the olfactory epithelium?
The inferior surface of the cribsform plate.
The nasal concha.
The basal calls and olfactory nerve.
What fits this description? “It is the entrance to the nasal chamber supported by cartilage”
Nostrils.
False nostrils.
Pailla.
Tick the purposes of the nose:
Humidifying and heating of inhaled air.
Regulation of air pressure.
Immune protection.
To help smell what foods are safe to eat.
To sneeze with.
There are coiled bones in the nasal chamber, covered in mucus secreting membrane with cilia and olfactory cells. True or false?
How many olfactory receptor cells does a human have?
6 Million.
100 Million.
220 Million.
20 Million.
Tick the correct cells that are in the common mammalian nose:
Olfactory receptor cells.
Supporting cells.
Basal cells.
Epithelium cells.
Dendrite cells.
What is the role of the supporting cells?
Physical support, nourishment and electrical insulation for olfactory receptor cells.
To undergo mitosis to replace olfactory receptor cells.
To produce mucus that is used to dissolve odour molecules so that transduction may occur.
What is the role of the basal stem cells?
What is the role of the olfactory glands?
What is another name for the olfactory cilia?
Olfactory hairs.
Olfactory neurons.
Olfactory basal membrane.
Chemicals that have an odour that stimulate the olfactory hairs are called?
Odourants.
Odouras chemicals.
Odouras gasses.
Which of these are true of the olfactory nerve?
Formed from small unmyelinated axons.
By the first cranial nerve.
Have slow conduction velocity and support provided by Schwann cells.
Part of the ethmoid bone.
Contain multiple small foramina through which the olfactory nerve fibres transverse.
Which of these are true about the cribriform plate?
Mitral cells are a second order neurons contracted by olfactory nerve fibres at glomerular layer of the bulb, is it true that their axons project to higher brain areas including the olfactory cortex or not?
