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Related Concept Videos

Venous Return01:04

Venous Return

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The circulatory system plays a crucial role in ensuring the optimal functioning of the human body. One of its critical components is venous return - the process that completes the blood circulation cycle. This article will delve into the concept of venous return, how it works, and its significance to our health.
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system...
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Veins as Blood Reservoirs01:10

Veins as Blood Reservoirs

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Veins, while chiefly responsible for circulating blood back to the heart, also function as storage vessels for blood. They house approximately 64 percent of the body's total blood volume, a feat made possible by their high capacitance—the inherent ability to expand and accommodate large volumes of blood, even under low pressure. The large diameter and thin walls of veins augment their distensibility, significantly more so than arteries, due to their classification as capacitance...
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Veins of Lower Limbs01:15

Veins of Lower Limbs

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The human body consists of an intricate network of veins responsible for the crucial task of blood drainage from the lower limbs. These veins can be categorized into two main types: deep veins and superficial veins.
Formed by the union of the medial and lateral plantar veins, the posterior tibial vein, rising through the calf muscle, assimilates the fibular vein. The anterior tibial vein, a superior extension of the foot's dorsalis pedis vein, merges with the posterior tibial vein at the...
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Veins of Upper Limbs01:17

Veins of Upper Limbs

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The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
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Development of Blood Vessels01:07

Development of Blood Vessels

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The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
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Venules01:08

Venules

3.2K
Venules are an integral part of the microscopic circulatory system that bridges the gap between capillaries and veins.
Venules are much smaller in diameter compared to their larger counterparts, the veins. They are generally 8 to 100 micrometers in diameter, significantly smaller than the size of veins. The walls of venules are thin, consisting of the endothelium, a thin layer of connective tissue, and occasionally a few smooth muscle cells. This structural simplicity is a stark contrast...
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Related Experiment Video

Updated: Feb 23, 2026

Whole-mount Immunohistochemical Analysis for Embryonic Limb Skin Vasculature: a Model System to Study Vascular Branching Morphogenesis in Embryo
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Whole-mount Immunohistochemical Analysis for Embryonic Limb Skin Vasculature: a Model System to Study Vascular Branching Morphogenesis in Embryo

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A BMPy Road for Venous Development.

Lauren M Goddard1, Mark L Kahn1

  • 1Department of Medicine and Cardiovascular Institute, University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA 19104, USA.

Developmental Cell
|September 13, 2017
PubMed
Summary
This summary is machine-generated.

Researchers discovered that Bone Morphogenetic Protein (BMP) signaling is crucial for the development of cerebral venous vessels. This finding clarifies previously unknown mechanisms controlling venous vessel growth in the brain.

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Area of Science:

  • Vascular Biology
  • Developmental Biology
  • Neuroscience

Background:

  • Molecular pathways for arterial and lymphatic vessel growth are well-defined.
  • Mechanisms governing venous vessel development, particularly in the brain, remain largely unknown.

Purpose of the Study:

  • To investigate the molecular mechanisms controlling the development of the cerebral venous system.
  • To identify key signaling pathways involved in venous vessel formation.

Main Methods:

  • The study by Tischfield and colleagues (2017) focused on identifying novel pathways in cerebral venous development.
  • Analysis involved investigating the role of specific signaling molecules in the formation of brain veins.

Main Results:

  • Bone Morphogenetic Protein (BMP) signaling was identified as a critical factor in cerebral venous system development.
  • This research elucidates a previously obscure aspect of vascular development.

Conclusions:

  • BMP signaling plays a significant role in the formation and development of the cerebral venous system.
  • The findings provide new insights into the molecular control of venous development, addressing a gap in current knowledge.