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Ch. 13 The Peripheral Nervous System

Chapter 13, Problem 12.14a

Which of the following statements is false?


a. The spinothalamic tracts are part of the anterolateral system.

b. Pain, temperature, and crude touch stimuli are carried by the anterolateral system.

c. Descending pathways from the brain and spinal cord can make the spinal cord less receptive to pain stimuli.

d. The thalamus serves as the 'gateway' for entry of all special sensory stimuli into the cerebral cortex, with the exception of audition (hearing).

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Hey, everyone. Let's take a look at this question together which neuronal pathway transmits pain and temperature sensations. Is it answer choice? A the dorsal column, medial lemniscus pathway. Answer choice B the corticospinal pathway, answer choice C the spino thalamic pathway or answer choice D the extra parameter pathway. Let's work this problem out together to try to figure out which of the following answer choices is the correct pathway that transmits pain and temperature sensations. So in order to solve this question, we have to recall what we have learned about each of the following neuronal pathways to determine which pathway transmits pain and temperature sensations. And we can recall that information about pain and temperature sensation is carried from the periphery such as the skin to the brain. And it is crucial in the perception and processing of painful and temperature related stimuli. And the pathway that is responsible for the transmission of pain and temperature sensations is the spinothalamic pathway which is answer choice c, the correct answer and all other answer choices are incorrect since they are involved in different aspects of sensory and motor functions and are not primarily responsible for transmitting pain. And temperature sensations which is carried out by the spinothalamic pathway. So answer choice C is the only correct answer choice. I hope you found this video to be helpful. Thank you and goodbye.