Jove
Visualize
联系我们

相关概念视频

Structure and Function of Platelets01:18

Structure and Function of Platelets

The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
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.
Cardiovascular System Abnormal Findings I: Inspection and Palpation01:29

Cardiovascular System Abnormal Findings I: Inspection and Palpation

In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
Abnormal findings observed during an inspection
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...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Bone damage in type 2 diabetes mellitus.

Nutrition, metabolism, and cardiovascular diseases : NMCD·2014
Same author

Chronic constipation in hypercalcemic patients with primary hyperparathyroidism.

European review for medical and pharmacological sciences·2012
Same author

Approach in glucocorticoid-induced osteoporosis prevention: results from the Italian multicenter observational EGEO study.

Journal of endocrinological investigation·2012
Same author

Sporadic and hereditary primary hyperparathyroidism.

Journal of endocrinological investigation·2011
Same author

Relation of adiponectin, visfatin and bone mineral density in patients with metabolic syndrome.

Journal of endocrinological investigation·2010
Same author

Hyperhomocysteinemia: a biochemical link between bone and cardiovascular system diseases?

Journal of endocrinological investigation·2009
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关实验视频

Updated: Jun 22, 2026

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
09:46

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells

Published on: December 27, 2017

心肌梗塞后的血小板大小变化

E D'Erasmo, M Acca

    Lancet (London, England)
    |March 21, 1992
    PubMed
    概括

    No abstract available in PubMed .

    更多相关视频

    In Vivo Two-photon Imaging of Megakaryocytes and Proplatelets in the Mouse Skull Bone Marrow
    07:58

    In Vivo Two-photon Imaging of Megakaryocytes and Proplatelets in the Mouse Skull Bone Marrow

    Published on: July 28, 2021

    Microfluidics in Assessing Platelet Function
    06:47

    Microfluidics in Assessing Platelet Function

    Published on: November 8, 2024

    相关实验视频

    Last Updated: Jun 22, 2026

    Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
    09:46

    Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells

    Published on: December 27, 2017

    In Vivo Two-photon Imaging of Megakaryocytes and Proplatelets in the Mouse Skull Bone Marrow
    07:58

    In Vivo Two-photon Imaging of Megakaryocytes and Proplatelets in the Mouse Skull Bone Marrow

    Published on: July 28, 2021

    Microfluidics in Assessing Platelet Function
    06:47

    Microfluidics in Assessing Platelet Function

    Published on: November 8, 2024