________ is a midbrain structure critical to movement.

A. the medulla

B. the pons

C. the ventral tegmental area

D. Wernicke's area

Answer: D. Wernicke’s area

Portions of the midbrain called the red nucleus and the substantia nigra are involved in the control of some body movement, and contain a large number of dopamine-producing neurons. The degeneration of neurons in the substantia nigra is associated with Parkinson’s disease. New research suggests a role for inhibitory neurons of the ventral tegmental area in the coordination of head movements, that may be helpful in guiding animals towards targets during motivated behavior. A large majority of conclusions about the relevance of VTA in different reward-related behaviors were gotten from studies that focus on neurons releasing dopamine.

Biology

3 years ago

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