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Laabri

Alternate CSA #2 (Hair and Blood)

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Last updated about 1 year ago
20 Nsɛmmisa
Hair
1
1
1
1
1
1
2
Blood
1
Crime Scene Scenario
1
4
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1.

Which of the following is NOT a layer of the hair shaft?

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2.

A cast of a hair surface can be made using:

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3.

The stages of hair growth include all of the following EXCEPT:

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4.

Microscopic hair comparisons must be regarded by police and courts as:

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5.

Generally, a human hair can be distinguished from an animal hair by examining:

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6.

Match the following scale patterns to their proper categories.

  • coronal

  • spinous

  • imbricate

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7.

Match the medulla patterns to their appropriate descriptions.

Draggable itemarrow_right_altCorresponding Item

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fragmented

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intermittent

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continuous

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absent

Calculate the medullary index of a hair whose diameter is 110 microns wide and whose medulla measures 92 microns.

1
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8.

medullary index = (2 decimal places)

1
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9.

Is this hair animal or human? Explain (1 sentence).

1
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10.

Which of the following drops struck the surface closest to a 90-degree angle?

1
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12.

In what direction was drop 2 traveling when it struck the surface?

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13.

Select the following antiserums that show a positive reaction with the substance being tested in the middle well.

6
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14.

Blood types:

type your answers as "A-, AB-, O+"

suspect 1:

suspect 2:

suspect 3:

suspect 4:

suspect 5:

crime scene:

Blood drops 1-3 in the crime scene are impact blood droplets. The area of convergence for blood drops 1-3 are area X1, X2, and X3, respectively. Below are the actual blood drops. You will need to determine the angle at which the blood fell.

6
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15.

Measure the blood droplets and show your work in the "edit background" section.

Round your final answer to the nearest whole number.

1
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16.

Assuming the distance to the area of convergence is 5.2 feet for blood droplets 1-3, which area of origin is highest off the ground?

due to the high volume of satellites which indicate that the blood was traveling at

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19.

All of the blood at markers 1-4 is A+. Assuming this is the victim's blood, propose an explanation as to how the victim's blood was deposited in these locations.

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20.

Examine the hair recovered from the crime scene and compare it with a known exemplar from Troy Drachman (the victim). Are the 2 hairs consistent?