Kaplan wrong? motor neuron?

[phosphatase]

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Question: workshop B, #18
18. Motor neurons are characterized by their:
A. dorsal root.
B. ventral root ganglion.
C. afferent activity.
D. parasympathetic activity.
E. None of the above

Kaplan answer:
18. D
Parasympathetic nerves and sympathetic nerves are motor neurons that have opposing effects in every tissue they
innervate. (why couldn't a somatic neuron be a motor neuron?) Motor neurons begin with their dendrites in the central nervous system where they receive signals from either
sensory neurons or the central nervous system. The cell bodies are clustered in the dorsal root ganglion (shouldn't ganglion cell body be AFFERENT???)and their axons
innervate effector tissue such as muscles or glands. Answer choice A is incorrect because motor neurons are associated
with the dorsal root ganglion not the dorsal root, and answer choice B is incorrect because there is no such thing as the
ventral root ganglion. Answer choice C is false because motor neurons are efferent and answer choice E is incorrect
because answer choice D is correct.

1. I think all cell body in ganglion is afferent.
2. I think D is wrong too and there is no correct answer.

please help me, thanks!

 

[phosphatase]

I think kaplan errorly use " dorsal root ganglion" instead of correct "autonomic ganglion".

I can't believe such a big mistake is existing, it's totally conceptually wrong instead of a typo.

 

[c3p]

Question: workshop B, #18
18. Motor neurons are characterized by their:
A. dorsal root.
B. ventral root ganglion.
C. afferent activity.
D. parasympathetic activity.
E. None of the above

Kaplan answer:
18. D
Parasympathetic nerves and sympathetic nerves are motor neurons that have opposing effects in every tissue they
innervate. (why couldn't a somatic neuron be a motor neuron?) Motor neurons begin with their dendrites in the central nervous system where they receive signals from either
sensory neurons or the central nervous system. The cell bodies are clustered in the dorsal root ganglion (shouldn't ganglion cell body be AFFERENT???)and their axons
innervate effector tissue such as muscles or glands. Answer choice A is incorrect because motor neurons are associated
with the dorsal root ganglion not the dorsal root, and answer choice B is incorrect because there is no such thing as the
ventral root ganglion. Answer choice C is false because motor neurons are efferent and answer choice E is incorrect
because answer choice D is correct.

1. I think all cell body in ganglion is afferent.
2. I think D is wrong too and there is no correct answer.

please help me, thanks!

if you think of it like:

NS is CNS and PNS
PNS is sensory and motor
motor (eferent) encompasses somatic and autonomic
autonomic encompasses symp and parasymp (choice D)

it didnt say ONLY parasymp activity so the statement (D) is true.

this is how i would approach it.

 

[phosphatase]

you're right.

But the explanation is still wrong. how could motor neuron cell body be located at dorsal root ganglion?

 

[c3p]

you're right.

But the explanation is still wrong. how could motor neuron cell body be located at dorsal root ganglion?

yea that is weird obviously its ventral horn....id say screw the explanation haha.