Branching architecture of canine pulmonary arteries: a quantitative cast study

The Tohoku Journal of Experimental Medicine
K KoikeT Nakada

Abstract

The purpose of this investigation is to analyze the branching pattern of pulmonary artery. The excised right lower lobes of six mongrel dogs were fixed by perfusion with 1.2% glutaraldehyde solution. Pressure of the pulmonary artery, vein and airway were controlled during perfusion. After fixation, resin was injected manually into the artery. When resin was completely polymerized, the lung was placed in 15 N NaOH solution to remove lung tissue. The diameters and lengths of branches were measured by stereomicroscopy. The results obtained were as follows: The basically dichotomous pulmonary arteries showed not only fairly regular dichotomies but monopodies, in the latter of which the diameter of parent branch was almost the same as that of its larger daughter branch. The diameter of monopodial branch was less than 500 microns, even when the parent branch was a large central segment. In arteries of over 1,000 microns in diameter, 75% or more of branchings were monopodies, whereas in small arteries of 200-300 microns in diameter, half the bifurcations were monopodies. At a bifurcation, the average daughter-to-parent diameter ratio was 0.8-0.9 for the larger daughter branch and 0.5 for the smaller one. The average length of branches...Continue Reading

Citations

Mar 1, 1993·Annals of Biomedical Engineering·T Onuki, S Nitta
Oct 18, 2018·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Jasper H G HelthuisAlbert van der Zwan
Feb 1, 1988·Journal of Electron Microscopy Technique·D E Schraufnagel, A Schmid
Feb 4, 1999·Journal of Applied Physiology·C A DawsonJ H Linehan

❮ 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.