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Overview of the Vascular System

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...

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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The human circulatory system consists of blood, blood vessels that carry blood away from the heart, around the body, and back to the heart, and the heart itself, which acts as a central pump. The systemic circuit supplies blood to the whole body, the coronary circuit supplies blood to the heart, and the pulmonary circuit supplies blood flow between the heart and lungs.

Mechanism of Angiogenesis

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Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...

Anatomy of Blood Vessels

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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.
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta, have...

Overview of Systemic Arteries

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The human body is a complex, well-organized machine, and at the heart of its operations lies the circulatory system. This network of blood vessels, which includes systemic arteries, plays a vital role in maintaining life by transporting nutrients, oxygen, and waste products to and from cells throughout the body.
Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body's tissues and returns deoxygenated blood back to the heart.

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Vascular Organoid Generation from Human-Induced Pluripotent Stem Cells

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Primo vascular system as a new morphofunctional integrated system.

Miroslav Stefanov¹, Jungdae Kim

¹Department of Animal Morphology, Physiology and Nutrition, Agricultural Faculty, Trakia University, Stara Zagora, Bulgaria. stefanat@af.uni-sz.bg

Journal of Acupuncture and Meridian Studies

|October 9, 2012

Summary

This summary is machine-generated.

The primo vascular system (PVS) is a newly discovered body-wide anatomical system. Research indicates the PVS regulates biological processes and may play a role in disease.

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Area of Science:

Anatomy
Physiology
Pathology

Background:

The meridian (Kyungrak) system has been studied for centuries.
The primo vascular system (PVS) is a recently identified anatomical network within the body.

Purpose of the Study:

To review methodologies, instruments, and animal models used in PVS research.
To analyze the morphological structures, topography, and functional mechanisms of the PVS.
To explore the potential role of the PVS in pathological processes.

Main Methods:

Literature review of existing studies on the PVS.
Analysis of morphological and topographical data.
Investigation of functional mechanisms and pathological implications.

Main Results:

The PVS is an anatomical system found in body cavities, organs, and tissues.
The PVS appears to regulate and coordinate fundamental biological processes.
The PVS has potential implications in understanding and treating diseases.

Conclusions:

The discovery of the PVS represents a significant advancement in understanding integrated physiological systems.
The PVS functions as a comprehensive regulatory network essential for life.
Further research into the PVS is crucial for its clinical applications.