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Forensics > Blood Basics > Flashcards

Blood Basics Flashcards

1
Q

Neutrophils

A

First to respond to bacteria or a virus

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2
Q

Eosinophils

A

Known for their role in allergy symptoms

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3
Q

Basophils

A

Known for their role in asthma

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4
Q

Lymphocytes

A

Fight infections by producing antibodies

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5
Q

Monocytes

A

Clean up dead cells

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6
Q

Hematocrit

A

Whole blood is composed of plasma cells and platelets

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7
Q

Plasma

A

55% of total blood

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8
Q

Buffy coat (leukocytes and platelets)

A

<1% of total blood

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9
Q

Erythrocytes

A

45% of total blood

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10
Q

Hematocrits gender

A

Males-40-50%
Females-38-45%
Athlete >50%

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11
Q

Blood type a

A

A antigens
B antibody

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12
Q

Blood type b

A

B antigens
A antibody

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13
Q

Blood type AB

A

AB antigens
No antibodies

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14
Q

Blood type O

A

No antigens
A and B antibodies

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15
Q

Agglutination

A

A specific antibody that will react with antigens

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16
Q

Enzyme multiplied immunoassay technique (EMIT)

A

Used by toxicologist because of its speed and high sensitivity for detecting drugs in urine
-antibodies that will bind to a specific drug are added to the subjects urine

17
Q

Antigen-antibody reaction

A

-a animal is injected with an antigen its body will produce a series of different antibodies which are designed to attack a particular site in the antigen of interest

18
Q

Kastle-Meyer

A

Color test-hemoglobin causes a deep pink color

19
Q

Luminal test

A

Search out trace amounts of blood
-produces light (luminescence) in a darkened area

20
Q

Precipitin test

A

Uses antisera normally derived from rabbits that have been inject with the blood of a known animal to determine the species origin of a questioned bloodstain

21
Q

Questions when examining dried blood

A
  1. Is it blood
  2. From what species did the blood originate from
  3. If the blood is of human origin, how closely can it be associated to a particular individual

Forensics (4 decks)

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