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Related Concept Videos

Autoregulation of Blood Flow01:17

Autoregulation of Blood Flow

Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation.
Capillaries and Their Types01:20

Capillaries and Their Types

Capillaries, a crucial constituent of the circulatory system, are diminutive vessels with a diameter between 5–10 micrometers, accommodating perfusion to the tissues through the phenomenon known as microcirculation. Through their permeable walls, consisting of an endothelial layer ensconced by a basement membrane and sporadically dispersed smooth muscle fibers, the exchange of substances between the blood and the interstitial fluid becomes plausible. Variance in wall composition exists, with...
Anatomy of the Circulatory System02:03

Anatomy of the Circulatory System

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.
Capillary Beds01:20

Capillary Beds

Capillary beds are networks of tiny blood vessels that play a crucial role in the circulatory system. These beds are where the exchange of gases, nutrients, and waste products occurs between the blood and surrounding tissues. Each capillary bed consists of numerous capillaries, which are the smallest blood vessels in the body, typically only one cell-thick. This thinness allows for the efficient diffusion of substances.
Capillaries connect arterioles, small branches of arteries, to venules,...
Anatomy of Blood Vessels01:20

Anatomy of Blood Vessels

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...
Blood Flow01:29

Blood Flow

Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.

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Related Experiment Video

Updated: Jun 5, 2026

Microperfusion Technique to Investigate Regulation of Microvessel Permeability in Rat Mesentery
12:48

Microperfusion Technique to Investigate Regulation of Microvessel Permeability in Rat Mesentery

Published on: September 12, 2015

The microcirculation: physiology at the mesoscale.

Timothy W Secomb1, Axel R Pries

  • 1Department of Physiology, University of Arizona, PO Box 245051, Tucson, AZ 85724, USA. secomb@u.arizona.edu

The Journal of Physiology
|January 19, 2011
PubMed
Summary
This summary is machine-generated.

Microcirculation research uses a

More Related Videos

Development and Characterization of In Vitro Microvessel Network and Quantitative Measurements of Endothelial [Ca2+]i and Nitric Oxide Production
09:39

Development and Characterization of In Vitro Microvessel Network and Quantitative Measurements of Endothelial [Ca2+]i and Nitric Oxide Production

Published on: May 19, 2016

Related Experiment Videos

Last Updated: Jun 5, 2026

Microperfusion Technique to Investigate Regulation of Microvessel Permeability in Rat Mesentery
12:48

Microperfusion Technique to Investigate Regulation of Microvessel Permeability in Rat Mesentery

Published on: September 12, 2015

Development and Characterization of In Vitro Microvessel Network and Quantitative Measurements of Endothelial [Ca2+]i and Nitric Oxide Production
09:39

Development and Characterization of In Vitro Microvessel Network and Quantitative Measurements of Endothelial [Ca2+]i and Nitric Oxide Production

Published on: May 19, 2016

Area of Science:

  • Physiology
  • Systems Biology
  • Biophysics

Background:

  • The microcirculation is a key mesoscale physiological system.
  • It bridges phenomena across different biological scales.
  • Current research often employs reductionist approaches.

Purpose of the Study:

  • To highlight the integrative nature of microcirculation research.
  • To position microcirculatory studies within systems biology.
  • To emphasize the utility of computational and mathematical approaches.

Main Methods:

  • Analyzing microcirculation function using computational and mathematical models.
  • Establishing quantitative relationships between microvascular and other biological scales.
  • Integrating theoretical and experimental research methodologies.

Main Results:

  • Microcirculatory research offers a 'middle-out' approach to understanding biological function.
  • Computational methods reveal quantitative links across biological scales.
  • Insights are gained that complement reductionist biological experiments.

Conclusions:

  • Microcirculatory research aligns with systems biology principles.
  • Its integrative, multi-scale approach is crucial for comprehensive biological understanding.
  • Theoretical and experimental integration drives novel insights.