Decomposition

Question 1

what is decomposition

Answer 1

reduction of complex matter into simpler forms

Question 2

initial decay is how many days after death?

Answer 2

0-3 days after death

Question 3

Initial Decay Stage 1- what happens and what is this stage also known as

Answer 3

Enzymes inside cells are released & break down the cell

also known as fresh stage

Question 4

Cyanosis

Answer 4

bluish discoloration in skin and mucus membranes

Question 5

sulphaemoglobin

Answer 5

becomes greenish in areas which not a normal essential of blood in liver mortis

Question 6

Livor Mortis-
what conditions typically forms ?

Answer 6

hypoxia or anoxic

Question 7

Rigor Mortis-
The removal of inhibition allows cross bridge formation between what two muscle proteins

Answer 7

myosin & actin

Question 8

Rigor Mortis-
What 2 enzymes are released during ___ & ___ eventually degrade muscle proteins

Answer 8

autolysis & putrefaction

Question 9

Rigor Mortis-
Muscles reach maximum stiffness in about ____hours & remain so for ___ hours.

Answer 9

stiffness in about 12 hrs & remain so for 72 hrs

Question 10

Chemical decomposition what 3?

Answer 10

Necrosis
Autolysis
Putrefaction

Question 11

Autolysis

Answer 11

self digestion or destruction of a cell due to the action of enzymes found within a cell

Question 12

Putrefaction:

Answer 12

chemical degeneration of soft tissues

Question 13

Necrosis:

Answer 13

physciological changes that occur in a cell after death

Question 14

Autolysis occurs when?

Answer 14

once death happens, instantly after death- cells no longer can regulate

Question 15

Stage 2 of decay is called what? ___to ___ days after death.

Answer 15

Putrefaction
4-10 days

Question 16

Putrefaction:
Bacteria does what?

Answer 16

Bacteria breaks down tissues & cells releasing fluids into body cavities

Question 17

Putrefaction stage is also known as ___ stage?

Answer 17

Bloat stage

Question 18

What happens in Putrefaction (the appearance)?

Answer 18

sufficient gas build up and give the body that balloon like appearance

Question 19

What is Stage 3 of decay ?

Answer 19

Black putrefaction

Question 20

Black Putrefaction are __ to __ days after death?

Answer 20

10-20 days after death

Question 21

In Black Putrefaction how does the body look and smell?

Answer 21

becomes flat, body collapses and exposed parts are black in color. Very strong smell

insects feed on this material and body goes in to the surrounding soil

Question 22

4 stage of decay is called what?
__ to __ days after death?

Answer 22

Butyric fermentation
20-50 days after death

Question 23

In Butyric Fermentation (body looks like what)

Answer 23

all remaining flesh is removed
the body dries out

body makes contact with the ground covered in mold

Question 24

Stage 5 of decay is called what?
__ to __ days after death?

Answer 24

Dry Decay
50-365 days after death

Question 25

What are the stages of decomposition? (5 stages)

Answer 25

Initial decay Putrefaction decay Black Putrefaction Butyric Fermentation Dry decay

Question 26

What are the stages of decomposition? (5 stages)

Answer 26

Initial decay Putrefaction decay Black Putrefaction Butyric Fermentation Dry decay

Question 27

Initial Decay (appearance)

Answer 27

body appears normal from the outside but is starting to decompose from the actions of autolysis & bacteria

Question 28

Putrefaction Decay (appearance)

Answer 28

Odor of decaying flesh is present and the body appears swollen

Question 29

Black Putrefaction Decay (appearance)

Answer 29

Very strong odor parts of the flesh appear black gases escape and the body collapses

Question 30

Butyric Fermentation Decay (appearance)

Answer 30

Body is beginning to dry out most of the flesh is gone

Question 31

Dry Decay (appearance)

Answer 31

body is almost dry further decay is very slow from lack of moisture

Question 32

In Fresh Stage what 2 adult flies appear

Answer 32

Calliphoridae & Sarciphagidae