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Body Tissues and Decomposition

Body Tissues and Decomposition. Objective: To learn how to differentiate between the various tissues found in the body. Did you know. The skin is the largest organ in the human body The “tickle” signal flows through the body at 200 mph It is impossible to tickle yourself. Eddie Gein.

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Body Tissues and Decomposition

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  1. Body Tissues and Decomposition • Objective: To learn how to differentiate between the various tissues found in the body.

  2. Did you know . . . . • The skin is the largest organ in the human body • The “tickle” signal flows through the body at 200 mph • It is impossible to tickle yourself

  3. Eddie Gein • Why do you think Gein kill people? • How did he obtain some of his victims? • Which type of tissue(s) did Gein use to make furniture?

  4. Body Tissues Types: 1. 2. 3. 4.

  5. Types of Muscle Tissues • Cells that ___________ Functions: 1.________ • Found:______ 2.__________ • Found: ________ 3. • Found: _______ What does striated mean?

  6. Epithelial Tissue • Arranged in various _______ • Why does the number of layers vary?

  7. Epithelial Tissues(Continued) Function: Found:

  8. Nervous Tissue • Found in the ______, spinal cord and _______ • e.x._____

  9. Nervous Tissue Function: • Send and _________ _______ in the body • How?

  10. Connective Tissue • These cells are arranged in a ________ • How does this help?

  11. Connective Tissue(Continued) • Function: • E.x. Bundles ________ together Found in : • B__________ • C_________ • T_________ • F__________ • B__________

  12. Types of Tissues Chart

  13. Case Study #1 Eddie Gein • Eddie Gein skinned all his victims and used their skin to make furniture. He made a couch out of several people. • What type of tissue was Eddie’s couch made up of? • Give an example of where this type of tissue is found

  14. Case Study #2 Jeffery Dahmer • Dahmer was a cannabalistic serial killer. His favorite meal consisted of a soup made from human brains and spinal cords. • What type of tissue would be found in Dahmer’s stew? • What is the function of that tissue?

  15. Case Study #3 Hannibal • Hannibal was a cannibal who loved to eat stomach and lungs mixed with fava beans. • Which type of tissue would be found in his meal? • What is the function of this tissue? • Which other organs can this tissue be found in?

  16. Case Study #4 John Dillinger • John Dillinger was found dead in his home. His dogs began to eat his remains, their favorite cut of meat was Dillinger’s gluetus maximus. • Which muscle did his dog’s eat? • Which type of tissue(s) did his dogs eat? • Which tissues would be the most abundant? • What is the function of each type of tissue?

  17. Case Study #5 Snookie • The remains of Snookie washed up along the Jersey Shore yesterday. All that was left of her was a few pieces of tanned skin and a complete skeleton. • Which type of tissue would be found in Snookie’s remains? • What was the source of the tissues? • What do you think happened to her organs?

  18. Case Study #6 Jason Vorhees • Looks like Jason met his final match. His body was discovered last week in a ditch. The circulatory and respiratory organs were missing. • Which organs were removed from Jason’s body? • What type of tissue would be found in the organs? • What is the function of each tissue?

  19. Body Cavities • ________ internal organs from _________

  20. Decomposition • ______ _______ of ______ of a dead organism • When does death occur?

  21. How long does decomposition take? Dependent on: • Environment • E.x. • Situation • E.x.

  22. Decomposition Video

  23. Stages of Decomposition • Initial Decay • Putrefaction • Black putrefaction • Butyric fermentation • Dry decay

  24. #1: Initial Decay • _____ days after death • _______ digest internal organs • Enzymes ________ internal organs

  25. #2 Putrefaction • Also called _________ • _______ days after death • Break down of tissues release _______ causing the body to _______

  26. #3 Black Putrefaction • _____ days after death • Body collapses with ________ exposed surfaces and ________ flesh

  27. #4 Butyric Fermentation • ______ days after death • Body has a “_______” smell due to ______ acid production • Body ________

  28. #5 Dry Decay • _____ days after death • Hair disappears • Why? • Only ______ left

  29. Decomposition of Submerged and Buried Bodies • Submerged bodies decompose _________ • Buried bodies decompose _________

  30. Estimate the time of death

  31. Estimate the time of death

  32. What is Forensic Entomology? • The use of ________ that inhabit a ________ to aid ___________

  33. Estimating Time of Death Using the Fly Life Cycle Adults lay eggs: • Day 1: • Days 2-5:

  34. Contiuned • Days 6-19: • Emergence: How does this help an investigation?

  35. Victim #1

  36. Victim #2

  37. Victim #3

  38. Victim #4

  39. Eddie Gein

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