Plasma and Blood Cells
what is the function of platelets?
Aid in clotting
What causes reddening and swelling at a site of injury
Enlargement of capillary
What is an antigen?
A foreign substance (usually a protein, sometimes a carbohydrate) that stimulates the release of antibodies to it.
a basophil is a type of?
granulocyte
What are 2 jobs of bradykinin
Initiate pain, release histamine, enlarge capillary
Type B blood contains ____ antigens and ___ antibodies
B antigen, a antibody
how does hemoglobin transport oxygen?
Contains 2 amino acid chains that contains a heme group to attach to oxygen
How is a macrophage formed
Monocytes move to site of injury and swell
Which blood types besides O- can B+ blood receive?
B+, B-, O+
What is a medical benefit to plasma donation
E.g. clotting disorders, rich in nutrients
Describe the process of fibrin formation, starting with prothrombin
prothrombin activator and Ca ions convert prothrombin to thrombin, which acts as scissors to cut fibrinogen into fibrin, which joins at the ends to form long chains
What happens during an incompatible blood transfusion
If the same antigen and antibody are present, agglutination (or clumping) of red cells will occur and can cause death