Blood Evidence Test Flashcards
Which component of blood is responsible for carrying oxygen?
red blood cell
When blood is dropped from a 90 degree angle, what is the relationship between height and spatter diameter?
As height increases, spatter diameter increases
If blood spatter has a diameter of 4.2 mm, how many cm is the spatter
0.42
_________shows the mathematical relationship between two quantities.
standard curve
if you are given x for your experiment you should be able to determine ___
y
the dependant variable is the
y axis
the independant variable is the
x axis
True or False Personal Protective Equipment (PPE) is important for the protection of Biomedical Science professionals.
True
Another term for platelets
thrombocytes
True or False The Kastle Meyer test is a commonly used Presumptive test
True
Red blood cells are
erthryocytes
What type of antigens are in type A blood?
A only
What type of antigens are in Type A blood
A
The fluid portion of blood that carries blood cells, glucose, proteins, fats, and wastes throughout the body.
plasma
Bleeding from a small cut soon stops due to the release of enzymes from
platelets
In the blood spatter experiment, the independent variable is plotted on the
x-axis
Which statement correctly describes the activities of the components of human blood shown in the diagram?
A transports oxygen, B starts clots, and C functions in immune response to fight infections
What type of antibodies are found in a person with Type AB blood?
No antibodies present
Another name for white blood cells is
leukocytes
True or False A good example of a negative control is water
True
What is the main function of white blood cells in the body?
Targeting pathogens and fighting off infections
True or False -
the only job of the erythrocytes is to carry oxygen to the cells.
false
The clumping together of matching antigens and antibodies is known as
agglutination
These blood cells are the protectors and help fight off disease.
white blood cells
What does the following picture show?
The role of platelets in blood clotting
A blood spatter analyst that is evaluating information about the “location of the blood source” is determining
point of origin
What does blood transport?
Nutrients, oxygen, carbon dioxide
A sample that you know should test positive is called a
positive control
True or false The human body contains both red and blue blood
false
Which of the following is not a function of blood?
to distribute neurotransmitters
Which of the following is not a major component of blood in humans?
Epithelial cells
True or False
In a blood sample, there are many more erythrocytes than leukocytes.
True
Anemia is when there is a deficiency in the oxygen carrying capacity of blood. What type of blood cell would there be less of?
erythrocytes
Which component of blood is responsible for helping to stop bleeding?
platelets
Hemoglobins
containing cells that carry oxygen from the body’s lungs to the bodies tissues
Red blood cell lifespan
approximately 4 months
Iron
molecule responsible for the red color of blood
which is bigger red or white blood cells and which has more
white blood cells are bigger than red blood cells but there are more red blood cells.
characteristics of platelets
small, colorless, disk-like
what does plasma look like
pale yellow fluid
plasma consists of
92% water, 7% vital protiens, 1% mineral salts and sugars
Anemia
a deficiency in the oxygen carrying capacity of blood
what percentage of the population has type A blood
42%
what percentage of the population has type B blood
10%
what percentage of the population has type AB blood
4%
what percentage of the population has type 0 blood
44%
Anitbodies in group A blood
Anti B
Antibodies in type B blood
Anti A
Anitbodies in group AB blood
None
Anitbodies in group 0 blood
Anti A and Anti B
Antigens in red blood cells in type A
A Antigen
Antigens in red blood cells in type B
B Antigen
Antigens in red blood cells in type AB
A and B Antigens
Antigens in red blood cells in type O
none
