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How does heroin affect cellular communication in the brain?

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

Almost all states designate a group of professional as mandatory reporters of suspected child abuse or neglect. is it only school administration staff are included on nearly every list?