week 9 PASS 1016MSC

frequency = volume, amplitude = pitch

• True

• False

Answer explanation

frequency = pitch,

amplitude = volume

A low-frequency sound displaces the basilar membrane near the base

• False

• True

Answer explanation

Basal cells replace olfactory neurons every 6 weeks

• True

• False

Answer explanation

this is the only place where a nerve cell is replaced frequently

The binding of substances causes a 3rd messenger system to trigger depolarisation of the receptor membrane, and a subsequent action potential

• True

• False

Answer explanation

it causes a 2nd messenger system, not 3rd!

In sensing smell, the chemicals must dissolve in the layer of mucous, coating the epithelium

• True

• False

which of the following nerve isnt involved in gustation (there are 3)

• CN VII: Facial

• CN IX: Glossopharyngeal

• CN X: Vagus

• CN XII: Hypoglossal

Answer explanation

its hypoglossal! this is not involved in gustation.

taste and olfaction receptors are...

• chemoreceptors

• thermoreceptors

• mechanoreceptors

• noiceceptors

Answer explanation

They are chemoreceptors.

Endolymph is located in the....

• bony labrinth

• membranous labrinth

hair cells are what receptor type?

what is cerumen?

Answer explanation

Most commonly known as ear wax, also called ceramic semen.