Body Tissues and Decomposition
Body Tissues and Decomposition
Objective: To learn how to differentiate between the various tissues found in the body.
Objective: To learn how to differentiate between the various tissues found in the body.
Did you know . . . .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
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 GeinEddie Gein
1. Why do you think Gein killed people?
2. How did he obtain some of his victims?
3. Which type of tissue(s) did Gein use to make furniture?
1. Why do you think Gein killed people?
2. How did he obtain some of his victims?
3. Which type of tissue(s) did Gein use to make furniture?
Body TissuesBody Tissues
Types:1.2.3.4.
Types:1.2.3.4.
Epithelial TissueEpithelial Tissue Arranged in various
_______
Why does the number of layers vary?
Arranged in various _______
Why does the number of layers vary?
Epithelial Tissues(Continued)
Epithelial Tissues(Continued)
Function: Covers and lines
Found: Skin, lines organs, respiratory tract
Function: Covers and lines
Found: Skin, lines organs, respiratory tract
Connective TissueConnective Tissue
Cells are arranged in a ________
How does this help?
Cells are arranged in a ________
How does this help?
Connective Tissue(Continued)
Connective Tissue(Continued)
Function:Bind, support and holdFound in :1.Bones2.Cartilage3.Tendons4.Fat (adipose)5.Blood
Function:Bind, support and holdFound in :1.Bones2.Cartilage3.Tendons4.Fat (adipose)5.Blood
Nervous TissueNervous Tissue
Found in the brain spinal cord and nerves
Found in the brain spinal cord and nerves
Nervous TissueNervous Tissue
Function:Coordinates and controls body activitySends and receives messages
Function:Coordinates and controls body activitySends and receives messages
NeuronNeuron
Muscle TissueMuscle Tissue Produce
movementTypes:1.Skeletal Muscle
tissue Moves bones Skeletal Muscles
Produce movement
Types:1.Skeletal Muscle
tissue Moves bones Skeletal Muscles
What does striated mean?
Muscle TissueMuscle Tissue
2.Cardiac Makes the heart
pump Only in the heart
3.Smooth Organ movement Stomach and
other organs
2.Cardiac Makes the heart
pump Only in the heart
3.Smooth Organ movement Stomach and
other organs
What does striated mean?
Types of Tissues ChartTypes of Tissues ChartType of Tissue Function Found Picture
Cardiac Muscle N/A
Skeletal Muscle
N/A
Smooth Muscle N/A
Epithelial Tissue
Nervous Tissue
Connective Tissue
Characteristic Skeletal Muscle Tissue
Cardiac Muscle Tissue
Smooth Muscle Tissue
Voluntarily Controlled xInvoluntarily Controlled x xStriated x xSingle Nucleus x xMultinucleated xAttach to bones xFound in walls of stomach and arteries
x
Move bone xFound in the heart x
Voluntary vs InvoluntaryVoluntary vs InvoluntaryVoluntary Have conscious controlInvoluntaryDo not have control
Voluntary Have conscious controlInvoluntaryDo not have control
Case Study #1 Eddie GeinCase 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.
Eddie Gein skinned all his victims and used their skin to make furniture. He made a couch out of several people.
a) What type of tissue was Eddie’s couch made up of?
b) Give an example of where this type of tissue is found
a) What type of tissue was Eddie’s couch made up of?
b) Give an example of where this type of tissue is found
Case Study #2 Jeffery Dahmer
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.
Dahmer was a cannabalistic serial killer. His favorite meal consisted of a soup made from human brains and spinal cords.
a) What type of tissue would be found in Dahmer’s stew?
b) What is the function of that tissue?
a) What type of tissue would be found in Dahmer’s stew?
b) What is the function of that tissue?
Case Study #3 HannibalCase Study #3 Hannibal Hannibal was a
cannibal who loved to eat stomach and lungs mixed with fava beans.
Hannibal was a cannibal who loved to eat stomach and lungs mixed with fava beans.
a) Which type of tissue would be found in his meal?
b) What is the function of this tissue?
c) Which other organs can this tissue be found in?
a) Which type of tissue would be found in his meal?
b) What is the function of this tissue?
c) Which other organs can this tissue be found in?
Case Study #4 John Dillinger
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.
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.
a) Which muscle did his dog’s eat?
b) Which type of tissue(s) did his dogs eat?
c) Which tissues would be the most abundant?
d) What is the function of each type of tissue?
a) Which muscle did his dog’s eat?
b) Which type of tissue(s) did his dogs eat?
c) Which tissues would be the most abundant?
d) What is the function of each type of tissue?
Case Study #5 SnookieCase 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.
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.
a) Which type of tissue would be found in Snookie’s remains?
b) What was the source of the tissues?
c) What do you think happened to her organs?
a) Which type of tissue would be found in Snookie’s remains?
b) What was the source of the tissues?
c) What do you think happened to her organs?
Case Study #6 Jason Vorhees
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.
Looks like Jason met his final match. His body was discovered last week in a ditch. The circulatory and respiratory organs were missing.
a) Which organs were removed from Jason’s body?
b) What type of tissue would be found in the organs?
c) What is the function of each tissue?
a) Which organs were removed from Jason’s body?
b) What type of tissue would be found in the organs?
c) What is the function of each tissue?
Body CavitiesBody Cavities
________ internal organs from _________
________ internal organs from _________
DecompositionDecomposition
______ _______ of ______ of a dead organism
When does death occur?
______ _______ of ______ of a dead organism
When does death occur?
How long does decomposition take?
How long does decomposition take?
Dependent on:1. Environment
E.x.
2. Situation E.x.
Dependent on:1. Environment
E.x.
2. Situation E.x.
The Body FarmThe Body Farm
http://www.youtube.com/watch?v=KkNdCSW1n_g
http://www.youtube.com/watch?v=KkNdCSW1n_g
Stages of DecompositionStages of Decomposition
1. Initial Decay2. Putrefaction3. Black
putrefaction4. Butyric
fermentation5. Dry decay
1. Initial Decay2. Putrefaction3. Black
putrefaction4. Butyric
fermentation5. Dry decay
Stages of DecompositionStages of Decomposition
http://www.youtube.com/watch?v=7e6jxW07RdU
http://www.youtube.com/watch?v=7e6jxW07RdU
#1: Initial Decay #1: Initial Decay
Within 2 days after death
Bacteria digest internal organs
Skin is stained Green/purplish staining Blood
decomposition
Within 2 days after death
Bacteria digest internal organs
Skin is stained Green/purplish staining Blood
decomposition
#2 Putrefaction(AKA Bloat)
#2 Putrefaction(AKA Bloat)
Within 4 days after death
Skin blisters Gas released by
bacteria causes the body to bloat
Within 4 days after death
Skin blisters Gas released by
bacteria causes the body to bloat
#3 Black Putrefaction#3 Black Putrefaction
10-20 days after death
Parts of flesh appear black
Gases escape Body collapses
10-20 days after death
Parts of flesh appear black
Gases escape Body collapses
#4 Butyric Fermentation#4 Butyric Fermentation
20-50 days after death
“Cheesy” smell due to butyric acid production
Body begins to dry out
20-50 days after death
“Cheesy” smell due to butyric acid production
Body begins to dry out
#5 Dry Decay#5 Dry Decay
50-365 days after death
Hair disappears
Only bones left
50-365 days after death
Hair disappears
Only bones left
Factors that effect the Rate of DecompositionFactors that effect the Rate of Decomposition
Rth???Corpus BRth???Corpus B
Estimate the time of deathEstimate the time of death
Estimate the time of deathEstimate the time of death
What is Forensic Entomology?
What is Forensic Entomology?
The use of ________ that inhabit a ________ to aid ___________
The use of ________ that inhabit a ________ to aid ___________
Insects and Stages of Decomposition
Insects and Stages of Decomposition
Initial Decay:
Putrefaction:
Black Putrefaction:
Butyric Fermentation:
Dry Decay:
Initial Decay:
Putrefaction:
Black Putrefaction:
Butyric Fermentation:
Dry Decay:
Estimating Time of Death Using the Fly Life Cycle
Estimating Time of Death Using the Fly Life Cycle
Adults lay eggs:Day 1:
Days 2-5:
Adults lay eggs:Day 1:
Days 2-5:
ContiunedContiuned
Days 6-19:
Emergence:
How does this help an investigation?
Days 6-19:
Emergence:
How does this help an investigation?
Victim #1Victim #1
Victim #2Victim #2
Victim #3Victim #3
Victim #4Victim #4
Eddie GeinEddie Gein
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