Portal circulations and their relation to counter-current systems

Related Experiment Video

Updated: Aug 20, 2026

Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
11:26

Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression

Published on: December 10, 2014

J R Henderson, P M Daniel

    Quarterly Journal of Experimental Physiology and Cognate Medical Sciences
    |October 1, 1978
    PubMed

    More Related Videos

    In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling07:30

    In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

    Published on: November 3, 2015

    Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats09:37

    Invasive Hemodynamic Characterization of the Portal-hypertensive Syndrome in Cirrhotic Rats

    Published on: August 1, 2018

    Related Concept Videos

    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 Cardiovascular System01:14

    Overview of the Cardiovascular System

    The cardiovascular system is a vital transportation system in the body. It comprises the heart and blood vessels and facilitates the exchange of gases, nutrients, and waste products.
    Heart
    The heart is the central pump of the cardiovascular system that circulates blood throughout the body. It comprises two atria receiving the blood and two ventricles pumping blood out of the heart. Their rhythmic contractions, called heartbeats, ensure that blood flow remains continuous.
    Blood Vessels
    Blood...
    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...
    Capillary Exchange01:28

    Capillary Exchange

    The cardiovascular system's chief role is to disseminate gases, nutrients, waste, and other substances to the body's cells. Small molecules like gases, lipids, and lipid-soluble substances directly diffuse through capillary wall endothelial cell membranes. Glucose, amino acids, and ions, including sodium, potassium, calcium, and chloride, use transporters for facilitated diffusion via membrane-specific channels. Glucose, ions, and bigger molecules may also pass through intercellular clefts.
    Overview of Systemic Arteries01:11

    Overview of Systemic Arteries

    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.
    Portal Hypertension01:22

    Portal Hypertension

    Portal hypertension is an increase in blood pressure within the portal venous system. Normally, this pressure is less than 5 mmHg. It is considered clinically significant when it rises above 10 mmHg. At this threshold, complications from altered blood flow and venous congestion emerge.EtiologyPortal hypertension arises from conditions that impede blood flow through the liver. The most common cause is cirrhosis, in which chronic liver injury leads to fibrotic scarring. This fibrosis narrows or...