• It will slow down the central nervous system.
• It will block the transmission of pain signals to her brain.
• It will release serotonin and dopamine to the brain.
Alejandra has started to use heroin. How will this MOST likely affect her body systems?
• It will slow down the central nervous system.
• It will block the transmission of pain signals to her brain.
It will release serotonin and dopamine to the brain.
• It will fill the lungs with toxic material.
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