Blood types Flashcards
agglutination
clumping of red blood cells in response to a reaction btwn an antibody and an antigen
Antigens
chemical that stimulates cells to produce antibodies
Antibodies
a protein that reacts against a specific antigen
Blood type A
-antigen? -antibody?
Antigen: A
Antibody: anti-B
Blood type B
-antigen? -antibody?
Antigen: B
Antibody: anti-A
Blood type AB
-antigen? -antibody?
Antigen: A and B
Antibody: Neither anti-A nor anti-B
Blood type O
-antigen? -antibody?
Antigen: Neither A nor B
Antibody: Both anti-A and anti-B
Rh blood group -caused by? -present vs absent? percent negative? -how inherited?
caused by Rh antigen D in blood -if present -> Rh-positive -if missing -> Rh-negative only 15% are Rh negative inherited trait w/ blood type
Rh factor and pregnancy (5 steps)
1) Rh- woman and Rh+ man conceive a child
2) Rh- woman w/ Rh+ fetus
3) Cells from Rh+ fetus enter woman’s bloodstream
4) Woman becomes sensitized - antibodies form to fight Rh+ blood cells
5) In the next Rh + pregnancy, maternal antibodies attack fetal red blood cells
universal donor
Type O blood
universal recipient
type AB blood
Blood type of recipient: A
Preferred donor? permissible donor?
Preferred donor: A
permissible donor: O
Blood type of recipient: B
Preferred donor? permissible donor?
Preferred donor: B
permissible donor: O
Blood type of recipient: AB
Preferred donor? permissible donor?
Preferred donor: AB
permissible donor: A,B,O
Blood type of recipient: O
Preferred donor? permissible donor?
Preferred donor: O
permissible donor: no alternative types