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NUR 280 Exam 4 Hemostasis Study Guide | 180+ Exam Questions & 100% Verified Answers | Hemostasis, Coagulation Cascade, Platelet Function, PT/aPTT, Fibrinolysis & Coagulation Testing

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Prepare for NUR 280 Exam 4 with this comprehensive study guide featuring 180+ exam questions and 100% verified answers covering the essential principles of hemostasis, coagulation, platelet physiology, fibrinolysis, and coagulation laboratory testing. This resource provides an in-depth review of primary and secondary hemostasis, platelet plug formation, platelet activation, platelet adhesion and aggregation, von Willebrand factor (vWF), glycoprotein receptors (GP Ib/IX/V, GP IIb/IIIa, GP VI), thromboxane A2 (TXA2), ADP, coagulation factors, intrinsic, extrinsic, and common coagulation pathways, vitamin K-dependent clotting factors, thrombin generation, fibrin clot formation, fibrinolysis, plasmin, tissue plasminogen activator (tPA), urokinase plasminogen activator (uPA), D-dimer formation, anticoagulant regulatory proteins, Protein C, Protein S, antithrombin, tissue factor pathway inhibitor (TFPI), platelet function testing, platelet aggregometry, PT, INR, aPTT, thrombin clotting time (TCT), reptilase time (RT), fibrinogen assays, mixing studies, factor assays, lupus anticoagulant testing, and factor XIII assays. The material also emphasizes laboratory interpretation, specimen handling, quality control, coagulation disorders, and exam-focused concepts frequently assessed in nursing and clinical laboratory science courses. Presented in a structured question-and-answer format, this study guide is designed to strengthen conceptual understanding and improve performance on NUR 280 examinations, hematology assessments, clinical laboratory science exams, medical laboratory technician (MLT) and medical laboratory scientist (MLS/CLS) coursework, ATI examinations, and NCLEX-style nursing assessments. Students will reinforce their knowledge of platelet physiology, coagulation mechanisms, coagulation factor activation, fibrin clot stabilization, fibrinolytic pathways, coagulation regulators, vitamin K metabolism, laboratory diagnostics, interpretation of abnormal coagulation studies, and evidence-based clinical applications. With comprehensive coverage of both normal hemostatic mechanisms and specialized coagulation testing, this resource serves as an essential review tool for mastering hematology, hemostasis, and coagulation laboratory principles required for academic success and clinical practice. Relevant Students: NUR 280 students Nursing students (ADN and BSN) Medical-Surgical Nursing students Hematology students Clinical Laboratory Science (CLS/MLS) students Medical Laboratory Technician (MLT) students Medical Laboratory Science (MLS) students Clinical Pathology students Pre-medical students Physician Assistant (PA) students Nurse Practitioner (NP) students ATI and NCLEX candidates Allied Health students Healthcare professionals reviewing hemostasis and coagulation APA References Rodak, B. F., Fritsma, G. A., & Keohane, E. M. (2024). Hematology: Clinical Principles and Applications (6th ed.). Elsevier. McKenzie, S. B., & Williams, J. L. (2024). Clinical Laboratory Hematology (4th ed.). Pearson. Hoffman, R., Benz, E. J., Silberstein, L. E., Heslop, H. E., Weitz, J. I., & Anastasi, J. (2023). Hematology: Basic Principles and Practice (8th ed.). Elsevier. Lewis, S. L., Bucher, L., Heitkemper, M. M., Harding, M. M., Kwong, J., & Roberts, D. (2023). Lewis's Medical-Surgical Nursing: Assessment and Management of Clinical Problems (12th ed.). Elsevier. Keywords NUR 280, NUR 280 Exam 4, Hemostasis, coagulation cascade, primary hemostasis, secondary hemostasis, fibrinolysis, platelet function, platelet aggregation, platelet adhesion, platelet activation, platelet plug, von Willebrand factor, vWF, GP Ib IX V, GP IIb IIIa, GP VI, thromboxane A2, TXA2, ADP, fibrinogen, thrombin, prothrombin, coagulation factors, intrinsic pathway, extrinsic pathway, common pathway, tissue factor, factor VIII, factor IX, factor X, factor XIII, vitamin K, Protein C, Protein S, antithrombin, TFPI, plasmin, plasminogen, tissue plasminogen activator, tPA, urokinase, uPA, D-dimer, PT, INR, aPTT, thrombin clotting time, TCT, reptilase time, RT, fibrinogen assay, platelet aggregometry, platelet function assay, mixing studies, lupus anticoagulant, factor assays, hematology, coagulation testing, laboratory diagnostics, ATI, NCLEX, exam questions, verified answers, study guide

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NUR 280 Exam 4 Hemostasis
2026 Exam Questions and
Answers | Already Graded A+



What is the outcome of primary hemostasis - ANSWER ✔✔Formation

of a PLT plug


Describe how primary hemostasis works - ANSWER ✔✔Contraction

of blood vessels

Platelet activation → adhesion → secretion of granules


What is the outcome of secondary hemostasis - ANSWER

✔✔Formation of a localized, stabile fibrin clot

,Describe how secondary hemostasis works - ANSWER ✔✔Activation

of coagulation proteins

Creation of thrombin (and fibrin clot)


What is the outcome of fibrinolysis - ANSWER ✔✔Dissolve the fibrin

clot

Name the form in which coagulation factors circulate in and how they

work - ANSWER ✔✔Zymogens (proenzymes) = inactive forms of an

enzyme

Something triggers the proenzyme to turn into its active form, allowing it

to do its job

Summarize how the vascular system responds to damage to the

endothelial lining - ANSWER ✔✔Vasoconstriction → blood is diverted

to other locations

Exposed collagen → PLT activation and adhesion

Release of tissue factor from endothelial cells → activates coagulation

factors


What are the effects of vasoconstriction - ANSWER ✔✔Reduces

blood flow (less blood loss)

Increases shear stress (allowing more PLTs to accumulate and activate)

, Name the three functions of PLTs - ANSWER ✔✔Adhere to exposed

collagen

Aggregate with other PLTs

Secrete stuff from granules


Name the 3 receptors on PLTs - ANSWER ✔✔Glycoprotein Ib/IX/V


Glycoprotein IIb/IIIa

Glycoprotein VI


Purpose of GP IIb/IIIa - ANSWER ✔✔Receptor for fibrinogen


Purpose of GP Ib/IX/V - ANSWER ✔✔Receptor for vWF


Purpose of GP VI - ANSWER ✔✔Receptor for collagen


Purpose of vWF - ANSWER ✔✔"Bridge" between collagen and PLTs,

allowing adhesion


Purpose of collagen - ANSWER ✔✔Exposed during endothelial

damage → allows adhesion of PLTs (using GP VI and vWF)


Purpose of thromboxane A2 (TXA2) - ANSWER ✔✔Release leads to

release of calcium (needed for PLT activation)




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