Related Experiment Video

Updated: Aug 8, 2026

Blood Collection from the American Horseshoe Crab, Limulus Polyphemus
12:48

Blood Collection from the American Horseshoe Crab, Limulus Polyphemus

Published on: October 13, 2008

[Bleeders and healers in Brazil (1808-28)]

T S Pimenta

    Historia, Ciencias, Saude--Manguinhos
    |May 5, 2006
    PubMed

    More Related Videos

    Collecting And Measuring Wound Exudate Biochemical Mediators In Surgical Wounds04:58

    Collecting And Measuring Wound Exudate Biochemical Mediators In Surgical Wounds

    Published on: October 20, 2012

    Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage10:34

    Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage

    Published on: August 30, 2020

    Related Concept Videos

    Epistaxis01:30

    Epistaxis

    Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
    Etiology
    Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
    Blood Transfusion and Agglutination02:45

    Blood Transfusion and Agglutination

    Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
    History
    The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
    Blood Transfusion01:15

    Blood Transfusion

    Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
    Blood Transfusion Overview
    A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
    Esophageal Varices-II: Clinical Features and Management01:28

    Esophageal Varices-II: Clinical Features and Management

    Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
    In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
    Disorders of Hemostasis01:24

    Disorders of Hemostasis

    Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
    Thromboembolic Disorders
    Two factors primarily cause thromboembolic conditions.
    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...