The drunken-driving suspect was unable to hold his hand out to the side and bring his finger to a stop on his nose because one of the brain structures depressed first by alcohol is the

A) cerebellum.
B) corpus callosum.
C) hypothalamus.
D) medulla.

Cerebellum

A brain structure involved in coordination of voluntary movements, balance, and some aspects of cognition and perception.

Corpus Callosum

A large band of neural fibers connecting the two hemispheres of the brain, facilitating interhemispheric communication.

Hypothalamus

A small region of the brain's base responsible for hormonal regulation, temperature control, eating, drinking, and many other critical physiological processes.