The differences between the white and gray rami communicantes based on their structure and function. Introduction: The sympathetic division is much more complex than the parasympathetic division. The sympathetic preganglionic neuron originates from the lateral horn of the T1-L2 segments of the spinal cord.

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Chapter 18, Problem 9WYL

Summary Introduction

To determine:

The differences between the white and gray rami communicantes based on their structure and function.

Introduction:

The sympathetic division is much more complex than the parasympathetic division. The sympathetic preganglionic neuron originates from the lateral horn of the T1-L2 segments of the spinal cord.

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Based on the attached figure (Fig. 18.7B in the textbook), what would an increase in activation of D1 receptor-expressing spiny neurons in the striatum cause in downstream basal ganglia structures? Direct and indirect pathways Substantia D1 nigra pars D2 compacta (transient) Frontal cortex Cerebral cortex (transient) + (transient) + (transient) Caudate/putamen VA/VL complex of thalamus (transient) (transient) Globus pallidus, Globus pallidus, external segment internal segment 0 (tonic) (tonic) + (transient) Subthalamic nucleus OA. decreased activity in the globus pallidus external segment (GPe B. decreased activity in the cortex C. increased activity in the subthalamic nucleus (STN) D. decreased activity in the thalamus E. decreased activity in the globus pallidus internal segment (GPI) Parafascicular nucleus