Chapter 8 questions

Question 1

According to the concept of _____, particular nerve cells n the brain recognize sensory information that is specific to only particular types of information.

Answer 1

labeled lines

Question 2

Stimulation of a pacinian corpuscle causes the opening of _____ gated _____ channels.

Answer 2

mechanically; sodium

Question 3

Sensory receptors that rae specialized for responding to painful stimuli are called….

Answer 3

nociceptors

Question 4

Phantom limp pain is an example of _____ pain

Answer 4

neurotpathic

Question 5

As you sit and answer this question, you are receiving less and less information about the feeling of the seat on which you are sitting. This is due to the process underlying your sensory receptors response to the stimuli called

Answer 5

adaptation/habituation

Question 6

Receptors that are sensitive to ultraviolet light are found in…

Answer 6

bees

Question 7

Information about pain and temperature in the anterolateral crosses the nervous system at the…

Answer 7

spinal cord.

Question 8

Sensory transduction is the process of

Answer 8

converting energy into a change in membrane potential.

Question 9

Descending spinal pathways that inhibit pain transmission in the spinal cord use the neurotransmitter

Answer 9

serotonin

Question 10

Congenital pain insensitivity is probably heritable, and one version of this disorder appears to be caused by….

Answer 10

defective receptors to nerve growth factor.

Question 11

In contrast to cortical somatosensory area S1, sensory S2 maps…

Answer 11

both sides of the body.

Question 12

What is the effect of naloxone treatment on TENS?

Answer 12

Naloxone reduces the analgesic effect of TENS

Question 13

Fast-adapting tactile receptors that mediate most of our ability to perceive form are called…

Answer 13

Meissner’s corpuscles

Question 14

Mice lacking the gene for TRPV1 respond to ____ but not to ____.

Answer 14

mechanosensory pain; heat

Question 15

A dermatome is…

Answer 15

an area of skin innervated by a single spinal nerve.

Question 16

Mountcastle found that cells in the _______ cortex of the monkey brain are active in response to the animal’s expectation that a visual or auditory stimulus will appear.

Answer 16

Posterior parietal

Question 17

Which layer of skin contains a rich web of nerve fibers in a network of connective tissue and blood vessels?

Answer 17

Dermis

Question 18

Each sensory receptor organ is affected by particular environmental events for which that organ is particularly adapted. These events are called

Answer 18

adequate stimuli

Question 19

A local change in the resting potential of a receptor cell that mediates the impact of stimuli and the initiation of nerve impulses is called….

Answer 19

generator potential

Question 20

In the experiments of Merzenich and Jenkins, monkeys trained to maintain finger contact with a rotating disc to obtain a reward showed which of the following changes in the cortical representations of the fingers?

Answer 20

Cortical areas associated with the trained fingers expanded.