Related Experiment Video

Updated: Jul 15, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
13:08

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay

Published on: September 9, 2012

[Biological significance of fibrinopeptide A elevation in the blood]

G Mombelli, V Hofmann, P W Straub

    Schweizerische Medizinische Wochenschrift
    |December 3, 1977
    PubMed

    More Related Videos

    Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States07:09

    Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States

    Published on: April 1, 2015

    The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well08:01

    The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well

    Published on: February 27, 2026

    Related Concept Videos

    Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

    Anticoagulant Drugs: Low-Molecular-Weight Heparins

    Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
    Extrinsic and Intrinsic Pathways of Hemostasis01:20

    Extrinsic and Intrinsic Pathways of Hemostasis

    Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
    The Extrinsic Pathway
    The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
    Clot Retraction and Fibrinolysis01:16

    Clot Retraction and Fibrinolysis

    After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
    Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

    Blood Studies for Cardiovascular System I: Cardiac Biomarkers

    Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
    The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
    Troponins
    Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
    Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

    Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

    Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
    These markers indicate stress or strain on the heart muscle:
    Natriuretic Peptides (BNP)
    Cardiac myocytes produce these hormones in response to ventricular stretching...
    Acute Inflammation III: Local and Systemic Effects01:25

    Acute Inflammation III: Local and Systemic Effects

    Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...