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Overview of Systemic and Pulmonary Circulation01:15

Overview of Systemic and Pulmonary Circulation

The systemic and pulmonary circuits are crucial components of the circulatory system, working together to transport blood between the heart, lungs, and the rest of the body. The process begins with pulmonary circulation, where deoxygenated blood is pumped from the right ventricle to the lungs via the pulmonary trunk and arteries. Upon reaching the lungs, the blood becomes oxygenated and returns to the heart, specifically to the left atrium, via the pulmonary veins.
The oxygenated blood is sent...
Overview of Pulmonary Circulation01:19

Overview of Pulmonary Circulation

The pulmonary circulation is a vital system in our body that acts as a bridge between the respiratory and cardiovascular systems. It serves as a transport network for deoxygenated blood from the heart to the lungs and then returns oxygen-rich blood back to the heart.
The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
Chambers of the Heart01:16

Chambers of the Heart

The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
Coronary Circulation01:21

Coronary Circulation

The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
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.
Overview of the Heart01:07

Overview of the Heart

The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's structure...

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Related Experiment Video

Updated: Jun 16, 2026

Three-Dimensional Echocardiographic Method for the Visualization and Assessment of Specific Parameters of the Pulmonary Veins
06:48

Three-Dimensional Echocardiographic Method for the Visualization and Assessment of Specific Parameters of the Pulmonary Veins

Published on: October 28, 2020

The right ventricle and pulmonary circulation: basic concepts.

Clifford R Greyson1

  • 1Department of Veterans Affairs Medical Center and the University of Colorado, Denver, Colorado, USA. Clifford.Greyson@UCDenver.edu

Revista Espanola De Cardiologia
|January 22, 2010
PubMed
Summary

The right ventricle manages low-pressure gas exchange, but struggles with increased afterload, risking right heart failure. Understanding adaptation pathways is key to preventing severe outcomes.

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Comprehensive Echocardiographic Assessment of Right Ventricle Function in a Rat Model of Pulmonary Arterial Hypertension
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Comprehensive Echocardiographic Assessment of Right Ventricle Function in a Rat Model of Pulmonary Arterial Hypertension

Published on: January 20, 2023

Area of Science:

  • Cardiovascular Physiology
  • Pulmonary Circulation Dynamics

Background:

  • The right ventricle and pulmonary circulation are optimized for low-pressure, high-volume gas exchange.
  • This system must accommodate dynamic changes from respiration and cardiac output variations.
  • Conflicting demands limit the right ventricle's ability to compensate for increased afterload.

Purpose of the Study:

  • To elucidate the functional demands on the right ventricle.
  • To explore the consequences of increased afterload on right heart function.
  • To identify biochemical pathways involved in right ventricular adaptation or maladaptation.

Main Methods:

  • Hemodynamic analysis of the pulmonary circulation.
  • Investigation of right ventricular response to pressure challenges.
  • Biochemical pathway analysis in response to afterload stress.

Main Results:

  • The right ventricle's design for gas exchange compromises its ability to handle increased afterload.
  • Pathologic processes can acutely or chronically increase afterload stress.
  • Rising afterload can precipitate right heart failure, hemodynamic instability, and death.

Conclusions:

  • The unique role of the right ventricle in gas exchange creates vulnerability to pressure overload.
  • Understanding adaptive and maladaptive biochemical pathways is crucial for managing right heart failure.
  • Early identification of risks associated with increased afterload is vital for patient outcomes.