Chapter 9.5-9.8

Question 1

Which of the following structures acts as a switching and processing center that relays visual information to the brain stem and cerebral cortex?

Answer 1

Thalamic nuclei

Question 2

Which of the following structures enables the equalization of pressure on either side of the eardrum (tympanic membrane)?

Answer 2

Auditory tube (or Eustachian tube or pharyngotympanic tube)

Question 3

In the visual pathway, the message must cross how many synapses before it moves toward the brain?

Answer 3

Two

Question 4

Descending instructions along which of the following tracts of the spinal cord adjust peripheral muscle tone to complement reflexive neck movements?

Answer 4

Vestibulospinal tract

Question 5

What fluid is found between the membranous and bony labyrinths?

Answer 5

Perilymph

Question 6

Which of the following events accounts for the fact that individuals over age 60 generally need twice as much light for reading than individuals at age 40?

Answer 6

Gradual loss of rods

Question 7

The movement of the stapes at the oval window sends pressure waves into which of the following structures?

Answer 7

Scala Vestibuli