Both the Spinothalamic and Dorsal Column Medial Lemniscus Pathway decussate and project to the contralateral parietal lobe. Which is the effector of both afferent tracts' second neuron? contralateral sensory homunculus nuclei in the ipsilateral(same side of origin) thalamus nuclei in the contralateral (opposite side of origin) thalamus ipsilateral (same side) dorsal column nuclei (DCN)
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The question asks for the "effector of both afferent tracts' second neuron" for both the Spinothalamic and Dorsal Column Medial Lemniscus Pathway. The introductory statement provides a crucial piece of information: "Both the Spinothalamic and Dorsal Column Medial Show more…
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Madhur L.
Neurons carrying information to the somatosensory cortex would originate from the and are termed neurons. Select one or more: a. thalamus, second order b. brain stem nuclei, second order c. spinal cord, first order d. hypothalamus, second order e. thalamus, third order
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23. Regarding the posterior columns, our perception of a given sensation as touch, rather than as temperature or pain, depends on ________. A) processing in the thalamus B) the type of lower motor neurons involved C) the first-order neurons that integrate the information at the spinal cord D) whether or not the axons decussate a second time within the cerebellum E) the number of sensory receptors the affected region contains in the primary sensory cortex 24. The corticospinal tracts that synapse on motor neurons in the anterior gray horns of the spinal cord are visible as they descend along the ventral surface of the medulla as a pair of thick bands, the ________. A) olives B) reticular formation C) pyramids D) medial lemniscus E) peduncles 26. Several centers (and their associated motor tracts) in the cerebrum, diencephalon, and brainstem, which may issue somatic motor commands as a result of processing performed at a subconscious level, were long known as the ________, but is actually now considered inaccurate and misleading. A) medial lemniscus B) pyramidal system C) anterolateral system D) reticular formation E) extrapyramidal system 31. All the levels of somatic motor control affect the activity of (the) ________. A) thalamus B) third-order neurons C) lower motor neurons D) medulla oblongata E) upper motor neurons
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