Biology (Raven), 10th Edition

Chapter 44: Sensory Systems

Pre-Test

1
Which of the following is a true statement regarding baroreceptors?
A)When blood pressure decreases, the frequency of impulses produced by baroreceptors increases.
B)A rise in blood pressure, as detected by baroreceptors, leads to the reduction of sympathetic activity.
C)Baroreceptors monitor blood pressure in the pulmonary artery and left ventricle.
D)As blood pressure increases, as detected by baroreceptors, the CNS stimulates an increase in vasoconstriction.
E)Baroreceptors are motor neurons that cause the heart to contract.
2
What are the simplest sensory receptors in a nervous system?
A)electromagnetic receptors
B)auditory receptors
C)chemoreceptors
D)free nerve endings that depolarize in response to direct physical stimulation
E)exteroreceptors
3
Which of the following is NOT a mechanical stimulus?
A)lateral line system in fish
B)sound
C)odor
D)touch
E)vibration
4
How does stimulus intensity and action potential frequency relate?
A)The greater the stimulus, the stronger the resulting action potentials sent to the brain.
B)The greater the stimulus, the greater the frequency of action potentials sent to the brain.
C)The greater the stimulus, the lower the frequency of action potentials sent to the brain.
D)The stimulus is ten times greater than the frequency of the resulting action potentials sent to the brain.
E)None of these are correct.
5
Which of the following is not one of the four basic taste categories that stimulate human taste buds?
A)bitter
B)salty
C)sweet
D)sour
E)spicy
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