Chapter 18 Flashcards
Serum
The clear fluid obtained when the erythrocytes and fibrin clot are removed from a blood sample
Plasma
The fluid portion of the circulating blood in which the cellular elements are suspended
Thrombus
A blood clot formed in a vessel or a heart chamber
Embolus
A clot of blood or other material that obstructs a blood vessel
Plasma: composition
Water: 92%
Proteins: 90% of solids are proteins
Non-protein organic matter: 1.5%
Inorganic Matter: 0.8%
Plasma Proteins: produced by liver
Albumin: majority. Carrier. Large capacity low affinity
Fibrinogen: helps with clotting
Globulins: alpha and beta are carriers, gamma is antibodies
Plasma Protein Functions
Maintaining osmotic pressure
carriers
Immune function
Non-protein organic matter
Lipids: nutritive substance Glucose: energy source Cholesterol Hormones and enzymes: digestive process Non protein nitrogenous material
Inorganic matter
Chlorides, carbonates, sulfates, phosphates all form to make salts
Function: maintain proper ph
Buffers
Osmotic pressure
Cell metabolismBlood clotting: stages
- Thrombokinase activated
- Thrombokinase+calcium+prothrombin = thrombin
- thrombin+fibrinogen=fibrin (clot)…protein
Blood clotting: anticoagulants
Produced by liver and basophils
Heparin: WBC, produced by liver, inhibits clotting
Citrates&oxalates:cheating agents…tie up mineral (calcium) stops thrombin formation
Dicoumarol: mold off sweet clover…interferes with production of prothrombin…prevents clots
Thrombus
Clot framing within a vessel
Thrombosis
Process of clot forming in vessel
Embolus
Clot is relocated from original position
Embolism
Act of clot moving around
