SCB 204.1738, 1739
Quiz 3
FORM A
Robyn O’Kane, Ph.D.
Spring I 2008
Name_________________________________________________________________
1. Rapidly adapting sensory receptors
A. continue triggering the same amount of action potentials with a constant stimulus.
B. include nociceptors.
C. make you become less aware of the stimulus in a short amount of time.
D. adapt slowly.
2. Which of the following is correct regarding the anterolateral spinothalamic pathways
and the posterior column-medial lemniscus pathway?
A. The first-order neurons synapse with the second-order neurons in the medulla for all.
B. The spinothalamic pathways are sensory; the posterior column-medial lemniscus
pathway is motor.
C. The spinothalamic pathways take information only to the cerebrum and the posterior
column-medial lemniscus pathway takes information only to the cerebellum.
D. The second-order neurons synapse with the third order neurons in the thalamus for all
pathways.
3. Sympathetic preganglionic motor neuron cell bodies are located in the
A. posterior root ganglia of the thoracic spinal cord.
B. anterior gray horns of the thoracic spinal cord.
C. lateral gray horns of the thoracic spinal cord.
D. posterior gray horns of the thoracic spinal cord.
4. Which fibers travel through the gray ramus communicans?
A. Sympathetic preganglionic fibers
B. Parasympathetic preganglionic fibers
C. Sympathetic postganglionic fibers
D. Parasympathetic postganglionic fibers
5. Autonomic sensory receptors are primarily
A. interoceptors.
B. exteroceptors.
C. thermoreceptors.
D. nociceptors.
6. What part of the brain helps to regulate autonomic reflexes?
A. Prefrontal cortex
B. Thalamus
C. Hypothalamus
D. Primary motor cortex
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Use the following information to answer Questions 7-15 below:
Some people who play the piano “sight-read”, which means they read the sheet music
(the notes on the page), interpret them, and then play the music.
7. What type of sensory receptor receives the musical information?
A. Chemoreceptors
B. Photoreceptors
C. Nociceptors
D. Mechanoreceptors
8. Which of the following is the microscopic classification of this sensory receptor?
A. Free nerve ending
B. Encapsulated nerve ending
C. Separate cell
9. Through where will the sensory information travel to head towards the CNS?
A. Cranial nerve I
B. Cranial nerve II
C. Lumbar spinal nerve
D. Cervical spinal nerve
10. Through what tract will this sensory information travel?
A. Optic tract
B. Anterior spinothalamic
C. Lateral spinothalamic
D. Posterior column-medial lemniscus
11. Extra credit: True or false: This information will synapse in the thalamus.
A. True
B. False
12. To what area of the brain will this sensory information go in order to be processed?
A. Primary olfactory area
B. Primary sensory area
C. Primary motor area
D. Primary visual area
13. Once this information has been interpreted, through what pathway will the motor
information for playing the piano travel?
A. Tectospinal tract
B. Lateral corticospinal tract
C. Posterior column-medial lemniscus tract
D. Corticobulbar tract
14. From where did the signal to move the fingers originate?
A. Primary olfactory area
B. Primary sensory area
C. Primary motor area
D. Primary visual area
15. Does this motor information synapse in a ganglion before reaching the effector?
A. No
B. Yes
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16. Flaccid paralysis
A. can occur if a bacterial infection targets the anterior gray horn.
B. involves damage to upper motor neurons.
C. results in exaggerated reflexes.
D. is contralateral to the damage (muscle affected is contralateral to the neuron affected).
17. Pain receptors are called
A. proprioceptors.
B. osmoreceptors.
C. mechanoreceptors.
D. nociceptors.
18. Information from proprioceptors
A. is rapidly adapting.
B. travels up the spinocerebellar tracts.
C. is relayed to the hypothalamus.
D. originates in the cochlea.
Use the following information to answer Questions 19-22 below:
Itch sensations from the left leg travel in the anterior spinothalamic tract.
19. What type of graded potential will these sensory receptors produce?
A. Generator potentials
B. Receptor potentials
20. Where does this information enter the CNS?
A. Cranial nerve X
B. Lumbar spinal cord
C. Thoracic spinal cord
D. Cervical spinal cord
21. Which of the following correctly describes the second-order neuron?
A. It synapses directly in the primary sensory area.
B. Its cell body is located in the posterior root ganglion.
C. Its axon travels in the anterior white column.
D. Its synaptic terminal is in the medulla.
22. Which hemisphere of the brain will eventually receive this information?
A. Right
B. Left
23. Which of the following can be interoceptors?
A. Chemoreceptors
B. Baroreceptors
C. Mechanoreceptors
D. All of the above are correct.
E. A and B are correct only.
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24. In general, both somatic sensory and somatic motor pathways
A. are monosynaptic.
B. ascend or descend through gray matter in the spinal cord.
C. travel through white matter in the spinal cord.
D. do not decussate.
25. The nuclei for cranial nerves III through XII are all located in the
A. cerebellum.
B. medulla oblongata.
C. brain stem.
D. diencephalon.
26. Which of the following is correct regarding the somatic and autonomic motor
pathways?
A. They both exhibit dual innervation.
B. They both control skeletal muscles.
C. They both have pre- and postganglionic neurons.
D. They both can cause contraction of a muscle.
27. Which of the following is correct regarding cholinergic receptors?
A. They are found in neuromuscular junctions.
B. They are found on the dendrites of sympathetic and parasympathetic postganglionic
neurons.
C. Activation of these receptors causes thermogenesis.
D. All of the above are correct.
E. A and B are correct only.
28. Upper motor neurons receive input from
A. the cerebellum.
B. the basal ganglia.
C. nowhere – they are the starters of the pathway and therefore they don’t receive
information from anywhere.
D. A and B are correct.
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