Blood groups Flashcards
How are blood groups in ABO system differentiated
presence or absence of ANTIGENS A or B on surface of ERYTHROCYTES
what is an antigen
substance that causes an immune response - production of antibodies
What is rhesus system
rhesus is another surface antigen on erythrocytes
what % people are rhesus positive RH +ve
85%
Rhesus factor is passed down how
INHERITANCE via Rh+ve gene
What happens to other 15% of people who are Rhesus negative if they come into contact with the rhesus antigen
they produce antibodies (an immune response)
What are the only circumstances that antibodies would be developed against the Rh factor
pregnacy - mother Rh- baby Rh+ via father
blood can mix during delivery/haemorrhage or subsequent pregnacies
name 8 blood groups
O- +
A- +
B - +
AB- +
which groups can O- donate to/receive from
donate to all
only receive from O-
which groups can O+ donate to/receive from
O+ can give to any positive blood group
can receive from O- or O+
which groups can A- donate to / receive from
A- can donate to A- or A+, AB- or AB+
can receive from O- or A-
which groups can A+ donate to /recieve from
A+ can donate to A+ or AB+
can receive from O-, O+, A-, A+
which groups can B- donate to /recieve from
B- can donate to B- B+ AB- AB+
which groups can B+ donate to/recieve from
B+ can donate to - B+ or AB+
can receive from O- O+ B- B+
which groups can AB- donate to/recieve from
donate to AB- AB+
receive from O- A- B- AB-
