The intestine as a fluid propelling system

Annual Review of Physiology
W A Weems

Abstract

The ability of intestinal segments to propel fluid from their lumens can be characterized in dynamic terms by measuring the movement of luminal fluid ejected into attached systems that predispose the amount of work the segment must do to affect fluid transfer. Studies employing this approach have demonstrated that the propulsive capability intrinsic to intestinal and colonic segments is not uniform along the bowel. Differences in propulsive behavior observed to occur solely as the result of the operation of subsystems intrinsic to particular intestinal regions suggest (a) that external control inputs can alter the propulsive state of a region, and (b) that this altered state may exist for hours after the external input to the system is terminated. Consideration of the propulsive performance of segments as an emergent property of interactions among intrinsic subsystems has contributed to the formalization of precise questions heretofore not asked about the organization and function of intestinal subsystems and their associated interactions. Knowledge of propulsive behavior and its control is still in its infancy. Further studies employing basic concepts and procedures similar to those reviewed above will advance our understandin...Continue Reading

Citations

Nov 1, 1984·The American Journal of Anatomy·M Moravec, J Moravec
Jan 5, 2006·Canadian Journal of Physiology and Pharmacology·Wim J E P LammersBetty Stephen
Nov 15, 2014·American Journal of Physiology. Gastrointestinal and Liver Physiology·Merel H KuizengaMarcello Costa

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.