Forensic Science-Unit 6 Blood Spatter

1 Forensic Science-Unit 6 Blood Spatter Packet #3 Ms. Wines April 24th-May 15th 1 IF YOU LEARN ANY THING FROM THIS UNIT, KNOW THAT IT 2 Assignments: 1. Blood Basic Notes 2. Sam Shepard Case 3. A Bloody Mess: The use of Blood Evidence in Criminal Cases Worksheet 4. Lab Experiment #7: Microscopic Analysis of Blood : Human vs. Animal Worksheet 5. What TYPE of Blood is it? Worksheet 6. What s Your Blood Type? Don t know; research some ways that you could find out! 7. Quiz: Blood types 8. Blood Spatter Notes 9. Video: Science of Murder: Blood Spatter 10. Video: Blood Pattern Analysis Worksheet 11. Classify the Bloodstain Pattern Worksheet 12. Video: Forensic File: Invisible Intruder; Worksheet 13.

2 Case Study: The Ludwig Tessnow Case; Write-up 14. Case Study: How did Phil Beardman Die? Worksheet 15. Blood Basics Quiz 3 Instructions: Take NOTES. Notes are available on google classroom under Unit 6 Blood Basics What is the difference? _____ _____ _____ _____ Velocities and surfaces TARGET SURFACE TEXTURE _____droplets that _____ linoleum flooring take on a slightly different appearance. Notice the _____ (scalloping) around the edge of the Blood droplets. the outer edge of the droplet, resembling a scallop shell. ___ ___ ___ ___ 4 Sam Sheppard Case Read pages 317-318 (Article is attached below) 1. Summarize the evidence. 2. Think about the importance of Blood evidence being more than just ID of someone's Blood type 3.

3 Direction of travel, angle of impact, position of origin, Blood drops and speed at impact How Marilyn was murdered is indisputable: sometime in the pre-dawn hours of July 4, 1954, Dr. Sheppard's wife, four months pregnant with their second child, was savagely beaten to death in the couple's bedroom, struck twenty-seven times in the head and thirty-five times in all, with a blunt-force weapon, while the Sheppards' son, Chip, slept soundly next door. Her injuries were horrifying: a broken nose and shattered skull, terrible crescent-shaped gashes on her forehead and scalp, a fingernail on her left hand nearly torn from the cuticle, and two incisors broken or else ripped out when she bit her attacker. There was evidence of a sexual assault: her pajama top had been pushed up around her neck, the bottom left dangling from her right leg.

4 The room was haloed in Blood from sheets to ceiling, headboard to mattress, the walls splattered except for a space off to the side of the bed where her killer stood, his clothes absorbing the spray, his weapon spewing more Blood each time his arm was raised. As to motive, there was evidence downstairs of a robbery: drawers were pulled from cabinets and Dr. Sam's medical bag was overturned. His watch, signet ring, and keychain, along with several other items, had been stashed in a green duffel bag that was discovered on the property. Yet there seemed to be something personal about the burglary, more akin to vandalism than theft: several of the couple's sporting trophies' figureheads1, for example, had been broken off, as if in spite.

5 At the same time, the home had been rifled too neatly, as if the robbery itself had been staged. Most mysteriously and suspiciously, only the items in the green duffel bag were taken from the home; Marilyn's wristwatch had been left behind in the study, along with her husband's wallet, with a $1000 check and cash inside. What makes up our Blood ? RED Blood CELLS (Erythrocytes) _____ _____ 5 WHITE Blood CELLS (Leukocytes) _____ _____ PLASMA _____ _____ PLATELETS (Thrombocytes) _____ _____ Blood Facts The average _____ has about _____ liters of Blood inside of their body, which makes up _____ of their body _____. _____ is living _____ that carries _____ and nutrients to all parts of the body, and carries _____ and other waste products back to the lungs, kidneys and liver for _____.

6 It also fights against _____ and helps heal _____, so we can stay healthy. There are about one _____ red Blood cells in _____ drops of Blood . For every _____ red Blood cells, there are about 40 platelets and _____ white cell. Genetics of Blood types Your Blood _____ is established before you are _____, by specific _____ inherited from your parents. You inherit one gene from your _____ and one from your _____. These genes determine your Blood type by causing _____ called _____ to exist on the _____ of all of your red Blood cells. What are Blood types ? There are 3 alleles or genes for Blood type: _____. Since we have 2 genes, there are _____ possible combinations. 6 How common is your Blood type?

7 ____% ___% 7 Blood Transfusions A _____ is a procedure in which Blood is given to a patient through an intravenous (IV) line in one of the Blood vessels. Blood transfusions are done to _____ Blood lost during surgery or a serious injury. A transfusion also may be done if a person s body _____ make Blood properly because of an _____. Who can give you Blood ? People with _____ Blood are called _____ Donors, because they can give Blood to _____ Blood type. People with _____ Blood are called Universal _____, because they can _____ any Blood type. Rh + Can receive + or - Rh - Can only receive Rh Factors Scientists sometimes study _____ to learn more about the human _____ because there are certain similarities between the _____ species.

8 While studying Rhesus monkeys, a _____ Blood protein was discovered. This protein is also present in the Blood of some people. Other people, however, do not have the protein. The presence of the _____, or lack of it, is referred to as the _____ (for Rhesus) factor. If your Blood does _____ the protein, your Blood is said to be Rh positive (Rh+). If your Blood does _____ the protein, your Blood is said to be Rh negative (Rh-). Blood Evidence Blood samples _____ _____ Universal Donor Universal Recipient 8 Blood droplets _____ _____ Blood Spatter _____ _____ A Bloody Mess: The use of Blood Evidence in Criminal Cases The Worksheet and Article are attached below. Instructions: Read through the introduction Complete Changes in Blood Read: Looking at Red Blood Cells Under the Microscope; And then answer the following questions 1- Why would the body produce more red Blood cells in low Oxygen conditions?

9 2- Is this a benefit? Why or why not? 3- Forensically, How could this knowledge help 9 10 Lab Experiment #7: Microscopic Analysis of Blood : Human vs. Animal Below is the worksheet that goes with the following photos: Instructions: Complete the Worksheet Lab Experiment #7: Microscopic Analysis of Blood : Human vs. Animal given the pictures provided. You must choose 1 animal Blood slide to draw, make sure that you give a complete microscope diagram; which includes your name, specimen name, magnification (listed on the worksheet), and scale (this was not included on your worksheet, use 10 m). Additionally, answer Part II: Related Questions. 11 12 What TYPE of Blood is it? Instructions: Read and complete activity 5-4 and 5-5 (use the chart providednbelow if you are still confused about the compatibility of Blood types ) Answer questions (Related Queries) 1 and 2 Read and Complete Related Case Study Exercise: -Questions are in the last paragraph of the article and also listed below.

10 1- How many people were involved? 2- What were the course of events that may have occurred? 3- Who (identify) is the suspect, who is presumed to have committed this murder? 4- Give a small diagram of your analysis of this scenario. 13 Why Are Some Blood types Incompatible with Others? Curious, 4 June 2018, 14 15 16 17 Anonymous. Blood Type Chart And Compatibility GIF. Gfycat, 27 Aug. 2018, What s Your Blood Type? Don t know; research some ways that you could find out! Instructions: if you know your Blood type, just list it. If not research on how you could find out your Blood , and write 1-2 sentences informing me about you found. 18 Quiz: Blood types 1. Blood types are determined by the protein located on a) All of the Blood cells b) Only the white Blood cells c) Only the T-helper cells d) Only the red Blood cells 2.