1. The thalamus and cortex share?
- Excitatory connections
- Inhibitory connections
- Both excitatory and inhibitory connections
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Other questions in this quiz
2. In the indirect pathway of timing and movements, what is inhibited less causing more stimulation of the substantia-nigra/globus pallidus resulting in no movement?
- Corticospinal tract
- Substantia-nigra/globus pallidus
- Subthalamic nuclei
3. In terms of basal ganglia damage, which of these causes Hemiballismus?
- Unilateral damage to subthalamic nuclei. Unwanted movements
- Lack of dopamine increases activity of direct pathway. Tonic inhibition of thalamus and less excitation of cortex. Difficulties starting and stopping movements
- Degeneration of striatum. No inhibition of thalamus, resulting in overexcitability and unwanted movements
4. Which of these is the circuit for receiving input?
- Frontal motor areas --> pons --> cerebellar cortex
- Cerebellar cortex --> deep cereb nuclei --> superior cereb penduct --> ventrolateral PMC
5. Which pathway favours D2 receptors and why?
- Direct pathway. D2 receptors are excited by dopamine
- Indirect pathway. D2 receptors are inhibited by dopamine
- Indirect pathway. D2 receptors are excited by dopamine
- Direct pathway. D2 receptors are inhibited by dopamine