Blood and immune system Flashcards
What is most common blood type?
O+
- What ethnic group has more B blood? 2. List blood types by ethnic group.
- Asians
Why do different ethnicities have different blood?
The genes that a person inherits from their parents determine the mix of antigens and proteins in blood. These factors run in ethnic groups because of this.
How many tests do you do when donating blood?
A dozen
What illnesses are tested when donating blood?
HIV, hepatitis B and C and syphilis.
What is the rarest blood type, why is it rare?
AB- is least common because you need both A and B antigens and no antibodies in the plasma. It’s rare because you need to inherit both A and B antigens
How long does RBC last?
120 days
What important blood component makes up a scab?
Platelets
What does it mean to be rh+?
Rh is a protein found in red blood cells. If you are RH+, you have that protein.
What determines blood type?
A person’s blood group is determined by a pair of genes - one gene inherited from each parent. Each blood group is identified by its own set of molecules (called antigens), which are located on the surface of red blood cells.
List all the blood types. How many r there?
There are 8 blood major blood groups. A+ A- B+ B- AB+ AB- O+ O-
How many ppl donate blood per year? (%)
How often can someone donate blood?
56 days
What natural immunity?
Immunity created through non purposeful contact with pathogen (chicken pox)
Artificial immunity
Immunity created through purposeful contact with pathogen (Vaccines EX agains polio)
