BLD 204 EXAM 3 UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
1. List the major components involved in hemostasis and
describe the functions of each
Answer:
1. Vasoconstriction (vascular walls:endothelium)
2. platelet plug
3. coagulation cascade
Question:
2. vasoconstriction function
Answer:
reduces blood flow to injured area and limits blood loss
Question:
3. platelet plug function
Answer:
form a temporary seal at the site of injury and beginning the clot process (primary
homeostasis)
Question:
4. coagulation cascade function
Answer:
stabilize the platelet plug and form a fibrin clot and is secondary homeostasis
Question:
5. petechiae
Answer:
small, pinpoint hemorrhages
Question:
6. purpura
Answer:
the appearance of multiple purple discolorations on the skin caused by bleeding
underneath the skin
, Question:
7. ecchymoses
Answer:
larger blue or purplish patches on the skin (bruises)
Question:
8. List two agents capable of initiating the formation of a
clot, one by the intrinsicpathway and one by the extrinsic
pathway
Answer:
intrinsic-factor XII (Hagemen factor)
extrinsic-tissue factor (TF)
Question:
9. 5 steps of homeostasis
Answer:
1. vasoconstriction
2. platelets (AAA)
3.coagulation cascade, which makes thrombin 4. stable clot formation from
thrombin (secondary homeostasis)
5. counter regulation stops process (fibrinolysis)
Question:
10. platelets AAA
Answer:
adherence, activation, and aggregation
Question:
11. fibrinolysis
Answer:
T-PA cleaves plasminogen to plasm which degrades fibrin
thrombomodulin also halts coal cascade
Question:
12. anticoagulation function in endothelium
Answer:
inhibit platelets by hiding ECM (extracellular matrix)
inhibits coat factors w heparin like molecules
fibrinolysis (TTPA)
CORRECT ANSWERS
Question:
1. List the major components involved in hemostasis and
describe the functions of each
Answer:
1. Vasoconstriction (vascular walls:endothelium)
2. platelet plug
3. coagulation cascade
Question:
2. vasoconstriction function
Answer:
reduces blood flow to injured area and limits blood loss
Question:
3. platelet plug function
Answer:
form a temporary seal at the site of injury and beginning the clot process (primary
homeostasis)
Question:
4. coagulation cascade function
Answer:
stabilize the platelet plug and form a fibrin clot and is secondary homeostasis
Question:
5. petechiae
Answer:
small, pinpoint hemorrhages
Question:
6. purpura
Answer:
the appearance of multiple purple discolorations on the skin caused by bleeding
underneath the skin
, Question:
7. ecchymoses
Answer:
larger blue or purplish patches on the skin (bruises)
Question:
8. List two agents capable of initiating the formation of a
clot, one by the intrinsicpathway and one by the extrinsic
pathway
Answer:
intrinsic-factor XII (Hagemen factor)
extrinsic-tissue factor (TF)
Question:
9. 5 steps of homeostasis
Answer:
1. vasoconstriction
2. platelets (AAA)
3.coagulation cascade, which makes thrombin 4. stable clot formation from
thrombin (secondary homeostasis)
5. counter regulation stops process (fibrinolysis)
Question:
10. platelets AAA
Answer:
adherence, activation, and aggregation
Question:
11. fibrinolysis
Answer:
T-PA cleaves plasminogen to plasm which degrades fibrin
thrombomodulin also halts coal cascade
Question:
12. anticoagulation function in endothelium
Answer:
inhibit platelets by hiding ECM (extracellular matrix)
inhibits coat factors w heparin like molecules
fibrinolysis (TTPA)
