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12.00 Free Response Question PracticeThe doctors might have been concerned about Randy’s neurotransmitters, hormones, myelin sheath, occipital lobe, and temporal lobe because he is experiencing symptoms that occur when damage happens to those specific parts of the brain. Neurotransmitters are the body’s chemical messengers. His doctors might be concerned about the acetylcholine in his body because he is experiencing muscle weakness. Since acetylcholine stimulates skeletal muscles to contract, Randy could be experiencing problems with this neurotransmitter because he has muscle weakness. Another neurotransmitter his doctorsmight be worried about is dopamine. High levels of dopamine are associated with schizophrenia, a mental illness with the symptoms of hallucinations and delusions. Since Randy has been experiencing delusions, he may have a high level of dopamine in his brain. Hormones, such as leptin, in the hypothalamus regulate body weight by informing the body when it has had enough food and reduces the appetite in order to feel full. His doctors are concerned about the hormones