Chapter 15

Question 1

Which of these is a component of the somatic nervous system?
ventral horns
ventral roots
motor cortex
All of these are components of the somatic nervous system.

Answer 1

All of these are components of the somatic nervous system.

Question 2

Which of these statements about the afferent division of the nervous system is true?
	 It ascends with motor information.
	 It descends with sensory information.
	 It descends with motor information.
	 It ascends with sensory information.

Answer 2

It ascends with sensory information.

Question 3

Which of these is not a property of phasic receptors?
They are good for sensing vibration.
They are fast-adapting.
They are sensitive to stimulus changes.
They are always active.

Answer 3

They are always active.

Question 4

Central adaptation can be defined as \_\_\_\_\_\_\_\_\_\_.
	 inhibition of the tonic receptors
	 inhibition along a sensory pathway
	 decline in receptor sensitivity
	 a property of tonic receptors

Answer 4

inhibition along a sensory pathway

Question 5

Gustatory receptors are sensitive to dissolved chemicals but insensitive to light. This is due to
	 receptor potentials.
	 receptor specificity.
	 the labeled line.
	 the fact that they are interoceptors.
	 accessory cells.

Answer 5

receptor specificity.

Question 6

In order for a sensation to become a perception,
it must received by the pulvinar nucleus of the thalamus.
the individual must vocalize about it.
it must arrive over fast-conducting nerve fibers.
it must received by the somatosensory cortex.
the other senses must be silent.

Answer 6

it must received by the somatosensory cortex.

Question 7

Which of the following can contribute to receptor specificity?
characteristics of the receptor cell membrane
the structure of the receptor cell
accessory structures and tissues that shield the receptors from other stimuli
accessory cells that function with the receptor
All of the answers are correct.

Answer 7

All of the answers are correct.

Question 8

Which of these is not a property of fast pain?
It is fast-adapting.
It is also called prickly pain.
It is carried by myelinated fibers.
It is sensitive to mechanical tissue injury.

Answer 8

It is fast-adapting.

Question 9

Which of these is not a property of chemoreceptors?
	 They are found in carotid bodies.
	 They are classed as nociceptors.
	 They trigger visceral reflexes.
	 They are interoceptors.

Answer 9

They are classed as nociceptors.

Question 10

Which of these is mismatched?
	 thalamic neuron; third-order neuron
	 brain stem neuron; second-order neuron
	 sensory afferent; first-order neuron
	 None of these are mismatched.

Answer 10

None of these are mismatched.

Question 11

Which of these is not a type of mechanoreceptor?
	 tactile
	 baroreceptor
	 nociceptor
	 proprioceptor

Answer 11

nociceptor

Question 12

Thermoreceptors
for “cold” are structurally indistinguishable from those for “warm.”
are free nerve endings.
are found within the dermis.
are more numerous for cold than for warm temperatures.
All of the answers are correct.

Answer 12

All of the answers are correct.

Question 13

Receptors that monitor the position of joints belong to the category called
	 baroreceptors.
	 thermoreceptors.
	 nociceptors.
	 chemoreceptors.
	 proprioceptors.

Answer 13

proprioceptors.

Question 14

Mechanoreceptors that respond to changes in blood pressure are called
	 proprioceptors.
	 nociceptors.
	 baroreceptors.
	 thermoreceptors.
	 chemoreceptors.

Answer 14

baroreceptors.

Question 15

Mechanoreceptors might detect which of the following sensations?
	 pressure
	 muscle length
	 touch
	 vibration
	 All of the answers are correct.

Answer 15

All of the answers are correct.

Question 16

Proprioceptors signal all but \_\_\_\_\_\_\_\_\_\_.
	 muscle length
	 joint angle
	 muscle tension
	 muscle temperature

Answer 16

muscle temperature

Question 17

Complex motor activities such as riding a bicycle
are largely controlled at the level of the spinal cord.
usually escape notice by the cerebellum.
require the coordinated activity of several regions of the brain.
only require neural processing at the level of the cerebrum.
with practice, involve little input from the brain.

Answer 17

require the coordinated activity of several regions of the brain.