Vascular Casting Research Articles

Die Gef��versorgung des konventionellen und invertierten Rundstiellappens. Eine tierexperimentelle korrosionstechnische Studie

35 vascular cast models of tubed pedicle and inverted tubed pedicle flaps of rabbits proved a better vascular presentation than normal skin areas, inverted tubes demonstrated better casts than conventional tubes.

Open Circulation in the Human Spleen. Dissection Scanning Electron Microscopy of Conductive-Stained Tissue and Observation of Resin Vascular Casts

Human spleen specimens conductive-stained by the tannin-osmium method were microdissected under the scanning electron microscope and it was revealed that arteries open through one or two end-pores (3-4 mu in diameter) into the reticular cell meshes in the Billroth cord and in the perifollicular area. The endothelial cells lining the arterial terminal portion, which may be swollen into a saccular space, are perforated intracellularly. Dumb-bell shaped erythrocytes are seen passing through these side-pores (1-2 mu in diameter). The termination of arteries not in sinuses but in the cordal reticulum was also confirmed by scanning electron microscopy of blood vascular casts of methacrylate resin. These findings evidence that the "open" theory is valid in the human spleen.

Blood pressures and penile muscle activity in the stallion during coitus.

ARTICLESBlood pressures and penile muscle activity in the stallion during coitusSD Beckett, RS Hudson, DF Walker, TM Reynolds, and RI VachonSD Beckett, RS Hudson, DF Walker, TM Reynolds, and RI VachonPublished Online:01 Nov 1973https://doi.org/10.1152/ajplegacy.1973.225.5.1072MoreSectionsPDF (1 MB)Download PDF ToolsExport citationAdd to favoritesGet permissionsTrack citations ShareShare onFacebookTwitterLinkedInWeChat Previous Back to Top Next Download PDF FiguresReferencesRelatedInformation Cited ByTreatment of a stallion for penile deviation caused by haemorrhage into the corpus cavernosum penis11 August 2022 | Equine Veterinary Education, Vol. 35, No. 4Penis and PrepucePelvic-Floor Muscle Rehabilitation in Erectile Dysfunction and Premature EjaculationPhysical Therapy, Vol. 94, No. 12Penis and PrepuceTelemetric Intracavernosal and Intraspongiosal Pressure MonitoringThe Journal of Sexual Medicine, Vol. 5, No. 10The spinal pattern generator for ejaculationBrain Research Reviews, Vol. 58, No. 1Novel technique for monitoring micturition and sexual function in male rats using telemetryYvette S. Nout, Jacqueline C. Bresnahan, Esther Culp, C. Amy Tovar, Michael S. Beattie, and Markus H. Schmidt1 March 2007 | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, Vol. 292, No. 3Stallion Reproductive BehaviorPenis and PrepuceSexual behavior of stallions during in-hand natural service and semen collection: an observation in French studsAnimal Reproduction Science, Vol. 68, No. 3-4Spring balance evaluation of the ischiocavernosus muscle2 November 2001 | International Journal of Impotence Research, Vol. 13, No. 5Spinal and brain circuits to motoneurons of the bulbospongiosus muscle: Retrograde transneuronal tracing with rabies virusThe Journal of Comparative Neurology, Vol. 414, No. 2Intracavernous pressure during erection in rats: an integrative approach based on telemetric recordingJacques Bernabé, Olivier Rampin, Benjamin D. Sachs, and François Giuliano1 February 1999 | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, Vol. 276, No. 2The Effect of a Surgically Created Shunt Between the Corpus Cavernosum Penis and Corpus Spongiosum Penis of Stallions on Erectile and Ejaculatory Function4 May 2004 | Veterinary Surgery, Vol. 28, No. 1Distribution of the arterial supply to the vomeronasal organ in the catThe Anatomical Record, Vol. 247, No. 1The Hemodynamic Influence of the Ischiocavernosus Muscles on Erectile FunctionJournal of Urology, Vol. 156, No. 3The Hemodynamic Influence of the Ischiocavernosus Muscles on Erectile FunctionThe Journal of UrologyEjaculatory pattern of llamas during copulationTheriogenology, Vol. 46, No. 2NEURAL CONTROL OF PENILE ERECTIONUrologic Clinics of North America, Vol. 22, No. 4Neural control of penile erection in the ratJournal of the Autonomic Nervous System, Vol. 55, No. 1-2Telemetric Monitoring of Intracavernous Pressure in Freely Moving Rats During CopulationJournal of Urology, Vol. 152, No. 4Physiology and mechanics of rat levator ani muscle: Evidence for a sexual functionPhysiology & Behavior, Vol. 55, No. 2Prevention of voluntary control of penile response in homosexual pedophiles during phallometric testing11 January 2010 | The Journal of Sex Research, Vol. 30, No. 2Pelvic Floor Exercise versus Surgery in the Treatment of ImpotenceBritish Journal of Urology, Vol. 71, No. 1Reproductive Anatomy and Physiology of the StallionVeterinary Clinics of North America: Equine Practice, Vol. 8, No. 1Sexually dimorphic, androgen sensitive, enkephalinergic afferents to a lumbar motor nucleus of ratsJournal of Neurobiology, Vol. 22, No. 8Electromyographic analysis of male rat perineal muscles during copulation and reflexive erectionsPhysiology & Behavior, Vol. 49, No. 6Male Reproductive Organs and SemenThe identification of a brainstem site controlling spinal sexual reflexes in male ratsBrain Research, Vol. 515, No. 1-2Penis and PrepuceFundamentals and hemodynamics of penile erectionCardiovascular and Interventional Radiology, Vol. 11, No. 4Hemodynamics of Penile ErectionUrologic Clinics of North America, Vol. 15, No. 1Relationship Between Perineal Muscle Contractions, Penile Tumescence, and Penile Rigidity During Nocturnal ErectionsJournal of Urology, Vol. 139, No. 1SCANNING ELECTRON MICROSCOPE OBSERVATION OF PENILE VASCULAR CASTS IN THE DOG: AN INQUIRY INTO THE POSSIBLE MECHANISM OF ERECTION BASED ON THE FINDINGS Biomedical Research, Vol. 8, No. 4Correlation Between Intracavernous Pressure and Contraction of the Ischiocavernosus Muscle in ManJournal of Urology, Vol. 136, No. 4Crossing dendrites may be a substrate for synchronized activation of penile motoneuronsBrain Research, Vol. 337, No. 2Neurological Bases of Male Sexual BehaviorSteroid Influences on the Development and Function of a Neuromuscular SystemCirculation to Male Reproductive Organs1 January 2011Sexual dimorphism and the influence of neonatal androgen in the dorsolateral motor nucleus of the rat lumbar spinal cordBrain Research, Vol. 249, No. 2Muscle, the Motor1 January 2011A review of anatomy and physiology of the stallionJournal of Equine Veterinary Science, Vol. 1, No. 3Principal mechanisms controlling penile retraction and protrusion in rabbitsActa Physiologica Scandinavica, Vol. 106, No. 2Priapism after Sedation, Neuroleptanalgesia and Anaesthesia in the HorseEquine Veterinary Journal, Vol. 10, No. 2Reflexive Mechanisms in Copulatory Behavior More from this issue > Volume 225Issue 5November 1973Pages 1072-1075 Copyright & PermissionsCopyright © 1973 by American Physiological Societyhttps://doi.org/10.1152/ajplegacy.1973.225.5.1072PubMed4745204History Published online 1 November 1973 Published in print 1 November 1973 Metrics

Scanning Electron Microscopy of Vascular Casts For the Study of Vessel Connections in a Complex Vascular Bed - The Trout Gill

The microcirculation of fish gills has been investigated by light microscopic study of sample or serial sections, transmission electronmicroscopy, and microscopic study of intact Blood or ink filled gill filaments; it is considered to consist of a series of respiratory pathways and non-respiratory shunts.However, reconstruction of a complex 3 dimensional structure from 2. dimensional information, as is available from section study, is fraught with difficulty, especially in establishing connections between micro-vessels. Also, investigation of intact specimens is hampered by poor resolution and inadequate depth perception into the tissue.Perfusion of the microcirculation with a liquid plastic mixture which will polymerise in situ produces a mechanically selfsupporting object, after tissue removal, for study with the S.E.M; this approach permits direct examination of the microvasculature in three dimensions.

Osmium impregnation of methyl methacrylate vascular casts for scanning electron microscopy.

Methyl methacrylate vascular casts treated with vaporized osmium tetroxide and hydrazine hydrate could, without any coating, be viewed directly in the scanning electron microscope. Charging effect was inconspicuous at an accelerating voltage of 25kV as well as 5kV and the scanning images obtained were adequately contrasted for observation. A scanning image of the vascular cast of the monkey renal glomerulus was shown as an example and the details of the method was described with some comments on an improved methyl methacrylate technique for casting of fine vessels.

Pressure-flow relationships in isolated canine cerebral circulation.

As a result of anatomic studies on the cerebral arteries and veins in the dog using vascular cast preparations, a surgical procedure was developed by which a) the cerebral arterial circulation can be completely isolated from the systemic circulation and b) the perfusion blood will flow only to the intracranial regions. Also devised was a servomechanism which controls the donor dog's body weight and thus prevents a blood volume shift between the donor and recipient dogs, within ± 5 cc of the original value. The cerebral perfusion pressure (C.P.P.) was controlled by a Starling's resistance and was altered stepwise from 140 to 0 mm Hg. At each C.P.P. level the cerebral blood flow (C.B.F.) was measured by a stromuhr. The mean and the standard deviation of C.B.F. values at 100 mm Hg C.P.P. in 10 dogs was 67.1 ± 19.5 cc/100 gm brain/min. Pressure-flow relationship over the C.P.P. range from 140 to 0 mm Hg did not show any evidence of autoregulation of the cerebral vessels, but instead suggested a linear proportional relationship.

Studies on cirrhosis of the liver. IX. Structure of shunted blood vessels in the autopsied cirrhotic liver.

The intrahepatic blood vessels and intrahepatic shunted blood vessels were investigated in seven human autopsied cirrhotic livers by means of vascular acrylic resin casting, the injection of different colored gelatin through the vessels, and the histological examination of serial sections. In all the cirrhotic livers, the changes were most prominent in the hepatic veins, which were compressed by the regenerated nodules of various sizes, became tortuous, and were reduced in number. The portal vein was found less affected than the hepatic veins, but some of its branches were arranged in a basket-like fashion around the nodules. The septums contained many blood vessels with broad lumen, which were considered to derive from surviving sinusoids. It is reasonable to presume that the porto-hepatic venous anastomoses develop from the pre-existing sinusoids included in the septums. Anastomoses between the portal and hepatic veins were demonstrated in five of seven specimens. Grossly visible porto-hepatic venous anastomoses were less frequently observed than microscopic anastomoses measuring form 8 microns to 100 microns in diameter. Histological studies of the serial sections revealed porto-hepatic venous anastomoses in two of six specimens. Three-dimensional figure of the portohepatic venous anastomosis was demonstrated in a reconstructed paraffin model. Histological examinations of the livers of five rats with cirrhosis due to carbon tetrachloride, which were injected with different colored gelatin, revealed the flattening and tortuosity of the hepatic veins in all rats, and porto-hepatic venous anastomoses in four of five rats.

Studies on cirrhosis of the liver. II. Influences of temperature and nutrition on the production of cirrhosis of the liver.

The intrahepatic blood vessels and intrahepatic shunted blood vessels were investigated in seven human autopsied cirrhotic livers by means of vascular acrylic resin casting, the injection of different colored gelatin through the vessels, and the histological examination of serial sections. In all the cirrhotic livers, the changes were most prominent in the hepatic veins, which were compressed by the regenerated nodules of various sizes, became tortuous, and were reduced in number. The portal vein was found less affected than the hepatic veins, but some of its branches were arranged in a basket-like fashion around the nodules. The septums contained many blood vessels with broad lumen, which were considered to derive from surviving sinusoids. It is reasonable to presume that the porto-hepatic venous anastomoses develop from the pre-existing sinusoids included in the septums. Anastomoses between the portal and hepatic veins were demonstrated in five of seven specimens. Grossly visible porto-hepatic venous anastomoses were less frequently observed than microscopic anastomoses measuring form 8 microns to 100 microns in diameter. Histological studies of the serial sections revealed porto-hepatic venous anastomoses in two of six specimens. Three-dimensional figure of the portohepatic venous anastomosis was demonstrated in a reconstructed paraffin model. Histological examinations of the livers of five rats with cirrhosis due to carbon tetrachloride, which were injected with different colored gelatin, revealed the flattening and tortuosity of the hepatic veins in all rats, and porto-hepatic venous anastomoses in four of five rats.