Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Stack #4594243
| Question | Answer |
|---|---|
| what is the role of a police at a crime scene | if a person is alive, may do basic med care until EMT arrive if it is a hot scene arrests can be made once scene is safe, secure it so that evidence is preserved for CSI unit |
| EMTś | give medical care pronounce the person dead |
| CSI unit Lead detective | survey the scene (make generaal observations) geet a warrant to searcch find every piece of evidence and number it |
| CSI unit evidence technicians | examine the body (maybe estimate time of death) document the scene-sketch, photograph, nots analyze, preserve, and log the evidence |
| CSI unit forensic specialists (blood spatter, entomologists) | analyze specialty types of evidence (evidence that can not be sent to a lab) |
| forensic scientists -chemists -toxicologists -DNA analysts | analayze the evidence in a lab HAVE NO KNOWLEDGE ABOUT THE CASE |
| forensic pathologists (medical examiner) | performs the autopsy determines the death |
| detectives | interview victims, investigate scene, ect |
| lead detective | gets all the info about the case, and works with the prosecutor |
| prosecution lawyers | present the evidence |
| defense lawyers | defend the accused, try to raise doubt about the evidence |
| What will a CSI have to do during the trial? | testify about evidence, explaining how they got the information |
| algor mortis | the gradual decrease in body temperature after death until it reaches the ambient temperature of the surroundings |
| rigor mortis | stiffening of the joints and muscles of a body a few hours after death, usually lasting from one to four days. |
| livor mortis (livitity) | purplish-red skin discoloration that occurs after death as gravity pulls blood to the lowest parts of the body |
| why can algor mortis body temperature be helpful for determining time of death? | because a body loses heat at a predictable, though variable, rate after death, dropping towards ambient temperature |
| what 4 factors can alter the srandart rate of cooling? | body fat, clothing, temperature of air where you are, if you are in water |
| what is rigor mortis and how can it be helpful for deterrmining time of death? | helps in estimating the time since death as well to ascertain if the body had been moved after death. |
| what is lovor mortis and why can it be helpful for determining time of death? | purplish-red skin discoloration from blood pooling in the lowest body parts due to gravity after death, starting within minutes and becoming fixed around 8-12 hours |
| how could livitity help you know if a body has been moved since the death occured? | creating patterns inconsistent with gravity and if the patterns are not the same as where the body is |
| why can exaination of the eyes be helpful in determinging time of death? | eyes become cloudy in the early stages, 2-3 hours unless eyes are closed then it takes about 24 hrs |
| when does decomposition begin, and how does the body appear? | 36-48 hrs the body turns green and may swellor bloat as bacteria breaks down tissue and releases gas, nasty smell |
| why can insect activity be useful? | different speciesof insects can point to a geographic location and can provide valuable information |
| how fast does the body cool during algor mortis? | first 12 hours 0.75 degrees celcius, after 12 hours about 0.4 degrees celcius |
| how long does rigor mortis take? | 8-12 hrs after death process is complete, 24-48 hrs after death the body is totally relaxed again |
| how long does livor mortis take | 1-2 hrs after death the blood settles into the lower parts of the body and becomes fixed within 6-8 hrs after death, if skin turns white when you touch it then lividity has not been fixed and death probably occured more than 2 hours ago but less than 10 |
| what is the basic difference between blood types | the presence or absence of specific sugar/protein markers called antigens (A and B) on your red blood cells, plus the presence or absence of the Rh factor (positive or negative) |
| summarize how to determine the blood typeof an unknown sample | sample is mixed with known antibodies or blood types to observe clumping (agglutination) |
| what is plasma? | liquid part of blood. A dilute solution of salts, glucose, amono acids, vitamins, urea, proteins and fats |
| what are white blood cells? | involved in the immune system |
| what are platelets? | involved in blood clotting |
| what are red blood cells? | involved in carrying oxygen |
| what are antigens | proteins on the surface of your red blood cells |
| what are the 2 main types on antigens | A and B, Rh present if someone is positive, if Rh is missing they are negative |
| explain why people have different blood types | the different blood types are determined by the presence or absence of certain proteins called antigens, these blood types are often passed down by genetics |
| what are antibodies? | Y shapes defensive structures that the immune system produces which are also proteins which travel in the bloodstream. the Y portion has unique sites that chemically attch to foreign antigens causing clumping so the foreign cells can be destroyed |
| A person has type A blood: what type of antibodies do they have? | anti-B |
| what surface antigen does the anti-B antibodies match up to? | antigen B |
| do you get antibodies from the donors blood? | no, the red blood cells are seperated from the plasma (where the antibodies are) so the person receiving the blood only gets the red blood cells from the donor. |
| What would happen if a person with type B blood received type A red blood cells in a transfusion? | because type B blood has anti-A antibodies and they will start to attack the A antigens in the type A blood |
| If someone has type O blood, what blood types will they accept? | people can only take O blood because they have anti-A and anti-B, O can only accept O |
| type AB+ blood is called the "universal acceptor" why is this? | Because they have no A or B antibodies present, so they will not attack any A, B, or O antigens |
| type O blood is called the "universal donor" why is this? | Type O blood can donate to any blood type because it has no surface level antigens to get attacked |
| if we had a blood sample, and we did not know what blood type it was, how could you figure that out? | We could put it in a tray and add A and B antigens to see how the blood cells react |
| Why would it be useful to have antibodies against proteins you body does not make? | so they can fight off foreign cells |
Created by:
noranaas14