Deck 8: Blood and Blood Spatter

Question 1

Which type of bloodstain pattern suggests that bloody hair was dragged across the floor?

A)wipe
B)arterial gush
C)swipe
D)transfer pattern

Answer 1

C

Question 2

What term describes the clumping of red blood cells?

A)agglutination
B)antigens
C)eosinophil
D)lymphocyte

Answer 2

A

Question 3

In 1900, Karl Landsteiner found that the blood from one person:

A)did not always freely mix with blood from another person.
B)always freely mixes with blood from another person.
C)always freely mixes with blood from another group of persons.
D)None of these choices.

Answer 3

A

Question 4

Each blood type is determined by:

A)a DNA reaction test.
B)an antibody reaction test.
C)a protein reaction test.
D)a RF factor reaction test.

Question 5

Red blood cells:

A)carry respiratory gases, mainly oxygen and carbon dioxide.
B)fight disease and foreign invaders.
C)aid in blood clotting.
D)are involved in repairing damaged blood cells.

Question 6

Blood is the circulating tissue consisting of two types of cells: red blood cells and platelets.

Question 7

White blood cells secrete proteins:

A)known as antibodies, which assist in the immune response.
B)known as viruses, which assist in the immune response.
C)known as bacteria, which assist in the immune response.
D)known as parasites, which assist in the immune response.

Question 8

Today blood splatter evidence is used to explain events:

A)at all death scenes.
B)at vehicular homicide scenes.
C)during crime-scene analysis.
D)​None of these choices.
E)​All of these choices.

Question 9

Given blood spatter patterns, it is possible to determine the direction the blood was traveling, the angle of impact, and the point _________________________________________.

Question 10

Of the four main human blood types using the ABO system, the largest percentage of the U.S.population is made up of:

A)Type O.
B)Type A.
C)Type B.
D)Type AB.

Question 11

A and B proteins are found on the surface of some red blood cells.If a person's blood contains both the A and the B proteins, then he or she has:

A)type A blood.
B)type B blood.
C)type AB blood.
D)type O blood.

Question 12

The three components of blood, red blood cells, white blood cells, and platelets, are carried throughout the body in:

A)antibodies.
B)plasma.
C)basophil.
D)monocytes.

Question 13

Sir William Osler discovered platelets in 1874.

Question 14

In 1728, Sir William Harvey determined that there was a continuous circulation of blood within the body.

Question 15

The presence or absence of antigens on white blood cells determines a person's blood type.

Question 16

Blood has been studied to one degree or another for thousands of years.

Question 17

The immune system functions to protect our bodies by identifying cells or molecules that are foreign, such as:

A)viruses.
B)bacteria.
C)parasites.
D)All of these choices.

Question 18

In 1940, Alexander Weiner, working with Rhesus monkeys, noticed another type of red cell protein.This red cell protein, called RH factor, is on the red blood cells of:

A)85 percent of the human population.
B)75 percent of the human population.
C)65 percent of the human population.
D)55 percent of the human population.

Question 19

The presence or absence of particular proteins, found embedded within a cell or plasma membranes of red blood cells, determines a person's:

A)DNA.
B)blood type.
C)Rh factor.
D)surface proteins.

Question 20

Blood typing is less expensive and quicker for analyzing blood evidence than DNA profiling.Since many different people share the same type, this blood evidence is considered to be:

A)individual evidence.
B)class evidence.
C)trace evidence.
D)biological evidence.

Question 21

A medium-velocity-sized blood splatter (1 to 4 mm) is caused by __________________________________.

Question 22

The attraction between molecules of unlike substances (like blood and ceiling tile) is called ______________________________.

Question 23

If any of the blood does overcome cohesion and separate from the main droplet of blood, it will form small secondary droplets known as ________________________________.

Question 24

If blood lands on a porous surface, such as wood or ceiling tile, then the edge of the drop of blood may form extensions or small ___________________________.