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相关概念视频

Arteries of Lower Limbs01:20

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The external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular...
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Blood is circulated throughout the human body through a network of blood vessels called the circulatory system. This system includes arteries that transport blood from the heart to various body parts. These arterial pathways divide into smaller vessels until they reach the arterioles, which further split into capillaries. It is within these minuscule capillaries that the exchange of nutrients and waste products takes place. After this exchange, the blood is collected by venules, which fuse to...
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Arteries, the vasculature responsible for transporting blood from the heart, possess robust walls capable of enduring the elevated pressures exerted by the heartbeat. Arteries near the heart are especially thick-walled and enriched with elastic fibers across their three tunics, classifying them as elastic or conducting arteries. These arteries, usually with a diameter exceeding 10 mm, are characterized by their ability to dilate in response to the blood pumped from the heart's ventricles...
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The human cardiovascular system comprises five primary types of blood vessels: arteries, arterioles, veins, venules, and capillaries, each serving unique functions.
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Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
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The vascular system, an integral part of the circulatory system, comprises various blood vessels that play crucial roles in maintaining the body's homeostasis. These blood vessels form a complex and efficient circulatory network. The three primary categories of blood vessels are the arteries, veins, and capillaries.
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Author Spotlight: Assessing the Reliability of Doppler Ultrasound in Measuring Leg Blood Flow
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在人类上下膝关节动脉之间的机械,结构和生理差异.

Pauline Struczewska1, Sayed Ahmadreza Razian1, Kaylee Townsend2

  • 1Department of Biomechanics, University of Nebraska Omaha, Omaha, NE, USA.

Acta biomaterialia
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PubMed
概括

在周围动脉疾病中,膝下动脉较小,更硬,结构不同于膝上动脉. 这项研究揭示了关键的生物力学变异,以改善PAD的医疗器械开发.

关键词:
雌雄关节动脉的动脉.在人群内动脉的动脉.机械性质 机械性质结构特征 结构特征 结构特征骨动脉是骨动脉中的一个.

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科学领域:

  • 生物力学 生物力学
  • 血管生物学 血管生物学
  • 生物材料是一种生物材料.

背景情况:

  • 周围动脉疾病 (PAD) 影响下肢,膝盖以下的结果较差.
  • 骨血管的机械和结构数据有限,这阻碍了有效的治疗.

研究的目的:

  • 为了比较膝盖上方的股骨关节动脉 (FPA) 和膝盖下方的股骨关节动脉 (IPA) 的生物机械和结构性质.
  • 了解细分特定的差异,以改善外周动脉疾病治疗和医疗器械设计.

主要方法:

  • 从15名人类受试者中,比较了SFA/PA (FPA) 与AT/PT/FA (IPA).
  • 利用微型CT成像,双轴机械测试和构成模型.
  • 评估的容器组成:弹性质,原,SMC和GAG.

主要成果:

  • 骨内动脉比骨内动脉更小,更薄,在纵向上更硬.
  • 人口内动脉经历了较高的纵向和较低的周围应力.
  • 在人群内动脉中,弹性素,原和GAG含量较少,但SMC含量相似.

结论:

  • 在膝盖上下动脉之间存在显著的生物机械和结构差异.
  • 这些发现对于开发特定位置的医疗设备和对外围动脉疾病的治疗非常重要.
  • 了解这些变异可以提高PAD的临床管理和患者结果.