CNS SI Quiz
1. Which of the following would probably not easily cross the blood brain
barrier?
a. Glucose
b. Amino acids
c. Electrolytes
d. Blood Platelets
2. Which of the following is not true about the spinal cord?
a. The alar plate during spinal cord development becomes interneurons
b. The basal plate forms in the ventral side of the spinal cord
c. The spinal cord extends to the last lumbar vertebra
d. It is secured to the dura mater by denticulate ligaments
3. Which of the following make up the anterior horn of the spinal cord?
a. Cell bodies of somatic motor neurons
b. Axon of inter neurons
c. Cell bodies of inter neurons
d. Cell bodies of autonomic motor neurons
4. Put the following areas of spinal cord in order of impulse travel from a
sensory stimulus to sympathetic nervous system response
a. Lateral horn
b. Dorsal root ganglion
c. Dorsal horn
d. Brain
Answer: B,C,D,A
5. Where would you find the greatest number of second order neurons
a. Lateral horn of the spinal cord
b. Dorsal horn
c. Thalamus
d. Cerebellum
6. Where would you find a descending pathway?
a. Lateral horn
b. Dorsal horn
c. Dorsal root ganglia
d. Afferent neurons
7. Which of the following would describe an unconscious, sensory, nondecisating pathway?
a. Specific ascending pathway
b. Non-specific sensory pathway
c. Spinocerebellar tract
d. Indirect (extrapyramidal) system
8. Which of the following describes receptors that determine the termperature
of the body?
a. Interoceptor, mechanoreceptor
b. Exteroceptor, thermoreceptor
c. Nociceptor exteroceptor
d. Interoceptor, thermoreceptor
9. Which of the following types of receptors are most likely tonic receptors?
a. Equilibrium receptors
b. Mechanoreceptors
c. Nociceptors
d. Chemoreceptors
10. Put the following events of somatosensory processing in order.
a. First order neurons carry signal to spinal cord
b. Action potential produced
c. Stimulus transduced into receptor potential
d. Second order neurons synapse with third order neurons
e. Signal transmitted to somatosensory cortex of cerebrum
ANSWER: C, B, A, D, E