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What percent of plasma is water ?
If a blood sample was placed into a centrifuge , how would the layers look?
- Top layer - Plasma
- Middle layer- Buffy Coat
- Bottom layer -Blood Cells
What does plasma contain ?
water , proteins , sugar , vitamins , amino acids , ions , and hormones
What are the three different types of cells you will find in plasma ?
- Erythorcytes -Blood cells
- Leukocytes -White blood cells
- Thrombocytes -Platelets
What do erythrocytes do?
They exchange gases and carry them throughout the body.
What do leukocytes do ?
They destroy and protect the body against foreign material and organisms.
What do platelets do ?
They form holes over cells and make clots.
What protein acts as a blood buffer ?
What is globulin ?
a blood protein that can transfer hormones.
What makes up the buffy coat?
Platlets and leukocytes
What are the three types of granulocytes ?
What are the two agranulocytes ?
What is diopedesis ?
WBC's crossing th capillary membrane into interstitial fluid
What make up a blood clot ?
- clotting factors
- other cells erythrocytes , leukocytes , etc.
What is hemostasis ?
The process of blood clotting.
What is platelet adhesion ?
It is when the platelets are signaled by a tissue factor to plug an incision.
what is platelet aggregation ?
this is when the platelets begin attaching ,change formation , and release a chemical to signal more platelets.
What is an "activiated platelet" ?
it is a platelet that has attached to a site and is now releasing chemicals.
Explain hemostasis ?
The platelets stick to the incision and change there shape to release a chemical that signals more platelets and keeps the vessel constricted.
Tissue factor is released signaling clotting factors
Clotting factros create fibrin then starts the process of Coagulation !
what is coagulation ?
It is the clotting of the blood
what are coagulation inhibitors ?
these are factors that keep the clot form getting to big.
what is fibrinolysis ?
this is the process where fibrin is cut up to keep the clot controlled.
What does plasminogen do ?
it is realesd from the vessels and dissolves the fibrin