15. The Special Senses

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.

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.

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.

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

c. The auditory canal is separated from the middle ear by the round window.

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

e. The semicircular ducts are connected to the utricle, and the cochlear duct is continuous with the saccule.

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

d. The cochlear duct is filled with perilymph.

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

f. The spiral organ is located in the scala tympani.

Explain how sounds of different frequencies are detected in the cochlea.

How do the hair cells of the crista ampullaris detect rotation of the head?

The macula in the utricle detects:

a. rotation of the head to the right.

b. very low-frequency sound waves that we can feel but not hear.

c. tilting of the head to one side.

d. linear acceleration of the head in a vertical plane.