1 Drugs and Txins
Intrductin Frensic txiclgy helps determine cause-and-effect relatinships between Expsure t a drug r ther substance and Txic r lethal effects frm that expsure 2 Frensic Science: Fundamentals & Investigatins, Chapter 9
Intrductin Peple can be expsed t txic substances: intentinally by treating illness r relieving pain accidentally by harmful cmbinatins r verdses deliberately by harming r killing thers, r by suicide 3 Frensic Science: Fundamentals & Investigatins, Chapter 9
Pisn Murder, Accidental Overdses, and Drug Offences Pisning causes less than ½ f 1% f all hmicides Accidental drug verdses are mre cmmn Drug ffenders Mre than 50% f the federal prisn ppulatin Abut 20% f the ppulatin in state prisns 4 Frensic Science: Fundamentals & Investigatins, Chapter 9
Main Categries f Cntrlled Substances Cpy these: 1. Hallucingens 2. Narctics 3. Stimulants 4. Anablic sterids 5. Depressants 5 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Hallucingens Often derived frm plants The effect and intensity f respnse t these drugs varies frm persn t persn. Affects the user s perceptins, thinking, self-awareness, and emtins 6 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Hallucingens Affects f an verdse ften include Increased heart rate Increased bld pressure Panic attacks, anxiety, r psychsis 7 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Hallucingens WRITE JUST THE NAME OF EACH DRUG IN YOUR NOTES 8 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Narctics The term narctic riginally referred medically t any psychactive cmpund with any sleep-inducing prperties Nw narctics typically refers t any drug r ther substance affecting md r behavir and sld fr nnmedical purpses, esp. an illegal ne. 9 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Narctics WRITE JUST THE NAME OF EACH DRUG IN YOUR NOTES 10 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Stimulants Increases feelings f energy and alertness Suppresses appetite Afterwards, depressin ften results Overdse affects include high bld pressure, agitatin, cnfusin, seizures Stimulants tend t be highly addictive 11 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Stimulants 12 WRITE JUST THE NAME OF EACH DRUG IN YOUR NOTES Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Anablic Sterids A chemical structure similar t teststerne Prmte cell and tissue grwth increasing bne mass and bdy muscle. Ppular with weightlifters, bdybuilders, and ther athletes 13 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Depressants Affects the central nervus system by increasing GABA activity, a neurtransmitter Increased GABA causes drwsiness and slwed brain activity Relieves anxiety and prduces sleep Side effects include slurred speech and lss f crdinatin Mixing depressants with alchl and ther drugs increases ptency and health risks 14 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Bacterial Txins Tetanus (als called Lckjaw) Prduced by the Clstridium tetani bacteria Causes vilent muscle spasms Btulism Prduced by Clstridium btulinum btulism Paralyzes muscles Causes irreversible damage t nerve endings Extremely deadly in very small amunts Mst pisnus bilgical substance 15 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Pesticides and Heavy Metals WRITE JUST THE NAME OF EACH DRUG IN YOUR NOTES 3 mre n next slide 16 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Pesticides and Heavy Metals WRITE JUST THE NAME OF EACH DRUG IN YOUR NOTES 17 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Biterrrism Agents Ricin A pisnus prtein in the castr bean Lethal in extremely small amunts Enters the bdy in varius ways: inhaled as a mist r a pwder ingested as fd r drink injected int the bdy Causes death within a few hurs 18 Frensic Science: Fundamentals & Investigatins, Chapter 9
Cntrlled Substances Biterrrism Agents Anthrax Spreads t humans frm infected animals Enters the human bdy thrugh: Inhalatin; causing breathing prblems that usually result in death Ingestin; becming fatal in 25% t 60% f cases Absrptin via the skin; leading t death in abut 20% f untreated cases 19 Frensic Science: Fundamentals & Investigatins, Chapter 9
Drug Pster Directins Yu may wrk alne r with a partner Each rubric has a drug already assigned. Yu will need t research yur drug and create a pster with the theme SAY NO TO DRUGS Include all infrmatin asked fr in the rubric Sme drugs are used fr medical purpses. If yu are having truble finding infrmatin n yur drug, include the wrds ILLEGAL USE OF in frnt f yur drug s name in the search bar Laptps shuld be in the stre rm. If nt, ask Dr. Price fr assistance in lcating these.