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A:
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- Refer to the direct pathway of the basal ganglia. What part of the frontal cortex is targeted by the direct pathway? What are the effects of the direct pathway on the thalamus and frontal cortex? Explain the circuitry of the direct pathway. Begin with the inputs and end with its effect on the cortex.What are characteristic for the ascending sensory pathways: Non-classical pathways use ventral and medial nuclei in the thalamus The thalamus in classical pathways project directly to the lateral nucleus of the amygdala. The thalamus in classical pathways project to primary sensory cortices. Non-classical pathways do not activate the autonomic nervous system.Where are tertiary neurons found? a. extending between the posterior horn and anterior horn b. extending between the posterior horn and the brainstem c. extending between the thalamus and the primary somatosensory cortex d. extending between the primary motor cortex and brainstem
- (a) In the spinothalamic pathway, where are the cell bodies of the first-order neurons located? Of the third-order neurons? (b) Trace the descending pathway that is concerned with skilled voluntary movements.for the Spinothalamic Tract, can you show me a diagram for the pathway from the peripheral structures of the body to the location inthe brain.a. Label the location of each neuron's dendrites, cell body, and axon terminal.b. Label the location (nervous system region) of the synapses involved in this ascending pathway.c. Label the location (nervous system region) of decussations, if any.A) For each of the sensory pathways below, draw a map or illustration of the pathway that indicates each of the neurons and the CNS structures involved. Indicate the unique function of each pathway. Posterior column- medial lemniscus Spinothalamic Trigeminothalamic
- Which of the following is correct? tertiary neurons found by:- a. extending between the posterior horn and anterior horn b. extending between the posterior horn and the brainstem c. extending between the thalamus and the primary somatosensory cortex d. extending between the primary motor cortex and brainstemThe neural pathway in figure 3 relays impulses that terminate at the: a. Motor cortex b. Occipital lobe c. Somatosensory cortex d. Parietal lobe e. Receptors f. Skeletal muscle g. Temporal lobesensory imput is relayed into the choices a. precentral gyrus b. insular gyrus c. hypothalamic cortex d. primary motor cortex e. postcentral gyrus
- Describe the role and location of visceral sensory neurons relative to autonomic neuronsWhich receptors are the main source of inhibition in the brain? To what ions are they permeable? Describe how those receptors mediate shunting inhibition.The posteroventral nucleus of the thalamus projects to all the following centers, except :-a- frontal motor areasb- primary somatic sensory areac- somatic sensory association aread- parieto-occipito-temporal association area