Final answer:
The study of drugs and toxins contributes to forensic science by helping understand their effects and analyze evidence. The five classifications of drugs are stimulants, depressants, hallucinogens, opioids, and cannabinoids. Acute poisoning is immediate, while chronic poisoning occurs over time. Dose and route of exposure determine toxicity.
Step-by-step explanation:
The study of drugs and other toxins contributes to the field of forensic science by helping forensic scientists understand how certain substances can cause harm or be used as evidence in criminal cases. Forensic toxicology involves analyzing drugs and toxins in biological samples, such as blood or urine, to determine their presence, concentration, and effects on individuals.
The five classifications of drugs are stimulants, depressants, hallucinogens, opioids, and cannabinoids. Examples of stimulants include cocaine and amphetamines, depressants include alcohol and barbiturates, hallucinogens include LSD and psilocybin, opioids include heroin and morphine, and cannabinoids include marijuana and hashish.
Acute poisoning refers to the harmful effects of a single exposure to a toxic substance, which can cause immediate symptoms or even death. Chronic poisoning refers to the long-term exposure to a toxic substance, which can lead to gradual damage to organs or systems over time.
Two factors that can determine the toxicity of a substance are dose and route of exposure. The dose refers to the amount of a substance that enters the body, and higher doses are generally more toxic. The route of exposure refers to how a substance enters the body, such as inhalation, ingestion, or absorption through the skin. Different routes of exposure can result in different levels of toxicity.