Which of the following statements is true regarding gustatory cells?


a. They have microvilli that project into the taste pore.
b. There are only 10–20 gustatory cells in a typical taste bud.
c. They have a lifespan of approximately 6 months.
d. Some form synapses with neurons that give rise to the trigeminal nerve.

1. Match the cell type with the correct stimulus.     

____Rod or cone     

____Hair cell in cochlea     

____Gustatory cell     

____Olfactory neuron     

____Hair cell in vestibule

a. Head movement

b. Odorant

c. Photon

d. Taste substance

e. Sound wave

The axons of the olfactory nerve terminate in the:

a. olfactory epithelium.

b. olfactory bulb.

c. olfactory tract.

d. primary olfactory cortex.

Fill in the blanks: In an olfactory neuron, the binding of a(n) ______to its membrane receptor triggers a(n)_______potential in the axons of the______nerve.

The primary olfactory cortex is located in the:

a. frontal lobe.

b. occipital lobe.

c. parietal lobe.

d. temporal lobe.

Match the taste with the chemical substance that produces it.      

____Sweet      

____Sour     

____Salty      

____Bitter      

____Umami

a. Many alkaloids

b. Sucrose

c. Glutamate

d. Sodium ions

e. Hydrogen ions

he axons from the nasal retina in the left eye terminate in the:

a. right lateral geniculate nucleus.

b. left lateral geniculate nucleus.

c. right medial occipital lobe.

d. left medial occipital lobe.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. The incus is connected to the tympanic membrane.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. The stapes is attached to the oval window.