Bloodstain Patterns in Forensics: Understanding Blood Types and Clotting Factors
Learn about bloodstain patterns, blood types, and clotting factors in forensic investigations. Explore the role of antigens, proteins, and DNA in blood analysis.
Bloodstain Patterns in Forensics: Understanding Blood Types and Clotting Factors
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Presentation Transcript
Blood Bingo Unit 4 Review
Questions 1-3 • A bloodstain pattern created when an object moves through an existing stain, removing and/or altering its appearance • This blood type contain Rh factor and has anti-B antibodies • This substance aids in blood clotting and the repair of damaged blood vessels
Questions 4 & 5 • This protein is carried on blood cells. If a person doesn’t have it, they are said to have a “negative” blood type • These fight disease and foreign invaders and, alone, contain cell nuclei.
Question 7 & 8 • A gun shot wound would create this type of blood spatter • A bloodstain pattern created when blood is released or thrown from a blood-bearing object
Question 10-12 • These carry oxygen to the body’s cells and carbon dioxide away. • This blood type agglutinateswhen you add anti-A, anti-B, and anti-Rh serum • This pattern indicates that a person or object was in the way of the blood spatter and was later moved
Question 14-16 • This carries cells and plasma • To find this you use sin-1(width/length) • When blood falls from a height or at a high velocity, it can overcome its natural cohesiveness and form_______ which separate completely from the blood drop
Question 17 & 18 • These straight lines down the axis of blood spatters show where the blood originated • The blood type agglutinateswith anti-B serum, but not with anti-A or anti-Rh serum
Question 21-24 • A bloodstain pattern created when a volume of blood has been absorbed by an object • The fluid with hormones, clotting factors, and nutrients • This blood type will not agglutinatewith the anti-A, anti-B, or anti-Rh serum • A bloodstain pattern created when a source of blood remains stationary over a surface causing an accumulation of blood