Objectives #1 Flashcards

(39 cards)

1
Q

Define Haemotology

A

The study of blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define Serology

A

The study of serum(plasma)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define Forensic Serology

A

The study of serum, blood cells, saliva and semen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Divide blood into its two main cellular components.

A

White blood cells & Red blood cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cells with a nucelus are called what

A

White blood cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

White blood cells are also called what

A

Leukoctyes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do white blood cells do

A

They are the body’s immune response

- have mitochondria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What do white blood cells contain

A

Both nuclear DNA & mitochondrial DNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Cells without a nucleus are called what

A

Red blood cells or Erythrocytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What do red boood cells contain

A

Contains haemoglobin(the molecule that gives blood its color)

  • transports O2 to cells & CO2 away from cells
  • no nucleus so more haemaglobin can fit throug
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the life expectancy for a red blood cell

A

About 120 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

State the main functions & movement of Platelets.

A

They have the ability to move-amoeba- like

They are responsible for blood clotting & vessel maintenance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Identify the proteins found on cell membranes that identify “self” and “foreign” cells.

A

Antigens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

All body cells have proteins on membrane called

A

Antigens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Anitigens interact with proteins called

A

Antibodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Antibodies determine what

A

Whether or not to destroy cell

  • “self”= okay
  • “foreign”= destroy
17
Q

Identify which type of heredity Human Blood Types are an example of.

A

Multiple allele trait

18
Q

What does multiple allele trait mean

A

More than 2 alleles controlling a trait

19
Q

How many antigens are used for human blood

20
Q

What system is used for human blood

21
Q

What are the possible outcomes for humans RBC’s?

A

A, B, AB, and O

22
Q

What antigen and anitibody are found in blood type A

A

Antigen: A
Antibody: Anti-B

23
Q

What antigen and anitibody are found in blood type B

A

Antigen: B
Antibody: Anti A

24
Q

What antigen and anitibody are found in blood type AB

A

Antigen: A & B
Antibody: neither A or B

25
What antigen and anitibody are found in blood type O
Antigen: Neirhee A or B Antibody: Both anti A and anti B
26
Define Agglutination.
When the red blood cells clump together
27
Identify two qualities of Agglutination that make useful for forensics tests.
Aggulation occurs quickly and can be observed under a microscope
28
Explain the cause of Agglutination.
Caused by antibodies interacting with antigens - antibodies provide connection between antigens - Type B blood with agglutinate when antibody B is present
29
You donate what when you give blood
Antigens not antibodies
30
Identify the seven other Antigens used in Blood Typing.
Rhesus factor, Duffy, Diego, Kidd, kell, MNS, and Hh
31
Explain the origin of the Rhesus factor.
Named after rhesus monkeys - where is was discovered
32
List the two possible antigens for the Rh factor.
Rh(+)- has antigen | Rh(-)- doesn't have antigen
33
Explain what happens if the wrong Rh group is transfused.
It can cause aggulation if it is not matched
34
Define Probability Math (Pm).
Chances of 2 unrelated individuals having the same profile
35
State the mathematical probability of two individuals having the same 8 antigens.
1:100 & 1:1000
36
State the difference in Pm between blood type and DNA.
Pm: 1:100 or 1:1000 But it is not as accurate as DNA which is 1:10,000,000,000 Not used to determine guilty
37
State whether or not Blood Typing is an accurate test for determining identity.
No it is not
38
Identify and explain the six limitations to blood typing.
1) need a relatively large sample 2) serological markers degrade quickly - several days old= reduced results 3) enzymes from bacteria can contaminate and affect results 4) hard to separate different blood samples 5) blood transfusions cause false results 6) difficult to get a sample from a suspect
39
Identify two specific organelles that the Leukocytes possess
Nucleus and Mitochondria