10. Potentials initiated in a 5-centimeter long neuron whose plasma membrane lac

ID: 3476098 • Letter: 1

Question

10. Potentials initiated in a 5-centimeter long neuron whose plasma membrane lacks voltage-gated channels would:

a. remain unchanged along the entire length of the neuron.

b. initiate an action potential.

c. reinitiate themselves every few millimeters.

d. normally dissipate within a few millimeters of the site of their initiation.

e. reach threshold within a few millimeters of the site of their initiation.

11. You diagnose a disease where only upper motor neurons die. Which of the following signs would be observed in such a diagnosis?

a. Tapping the patellar tendon produces no response

b. Tapping the patellar tendon produces a nearly normal reflex.

c. Voluntary movement is disrupted

d. The individual feels no pain or proprioception.

e. b and c are correct

12. For a disease where only somatic afferent neurons die, you would expect to observe the death of neuronal cell bodies in the:

a. ventral horn of the spinal cord.

b. dorsal horn of the spinal cord.

c. in the dorsal columns of the spinal cord.

d. in the anterolateral system.

e. dorsal root ganglia..

10(e) reach threshold within a few millimeters of the site of their initiation.

11(e) b and c are correct.

12( b) dorsal horn of spinal cord

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