Chapter 10 Studyguide – Serology
Chapter 10 Studyguide – Serology
Labs are important for this test. You will need to know your vocabulary and which tests we use for which reasons. As Ms. DiNonno frequently says, the fluff is over!
I will give you an overview of the studyguide, but you are best off coming to a study session to prepare for this test. I will hold them before and after school. I am available during mods 3-4 Wednesday through Friday and I do make-up labs in room 317 or 315 during mod 7 on Friday. Schedule a time for labs so I can bring supplies. If you need another time to make up labs, I can do them during mods 10-12 Mon, Tues., and Thurs. Let me know when you want to meet before the test so I can rearrange my other science students and gather supplies.
So here we are…
The test is multiple choice, true-false, matching, and a video component for identifying bloodspatter and transfer stains.
Here is a sampling of what you need to know and apply.
|Type |Antigen |Antibody |Can give blood to|Can get blood |Population of this|Known as | |
| |(outside) |(inside) | |from |type in US | | |
|A |A |B |A, AB |O, A |40% | | |
|B |B |A |B, AB |O, B |11% | | |
|AB |A and B |None |AB |A,B,AB, O |4% |Universal | |
| | | | | | |receiver | |
|O |none |A and B |A,AB,B,O |O |45% |Universal donor | |
Characteristics of blood –
55% plasma; 45% cells
Antigens are proteins on the surface of the blood cell that determines blood type
Antiserum – blood serum containing antibodies
Presumptive tests – can it be blood; can it be another substance
80% of the population are secretors (person whose blood type antigens are found in other bodily fluids)
Hemoglobin found in erythrocyte (red blood cell)
Leukocyte = white blood cell
Thromobcyte = platelet = smallest part; helps with clotting
Rh factor is an antigen found on the red blood cells (erythrocytes)
Shape of the blood spatter will tell the direction of travel
Active bloodstains are those that are made to travel by a force other than gravity
The pointed end of the bloodstain faces the direction of travel, tails of satellite bloodspatter point in the opposite direction of the parent bloodspatter
The harder and less porous the surface; the less the blood drop will break apart
Tests…
Kastle-Meyer – tests for blood
Precipitin – tests tells if human or animal blood; animal has larger nuclei
Luminol – tests for blood (black light – glows)
Hematest – reacts with heme group
Look in your notes for these other vocabulary words. Several words are close in meaning to other words, so know the differences. We will go over these in our study sessions.
Cast off bloodstain
Wipe
Backspatter
Angle of impact
Bloodstain
Area of convergence
Point of convergence
Satellite spatter
Terminal velocity
Swipe
Contact stains
Bloodstain transfers
Transfers (in general)
Directionality
Target
Void (in relation to bloodspatter)
active bloodstains
impact angle = sin-1 (width/length)
ABO blood group = based on having A, B, O or no antigens on the blood cell
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