Results 81 to 90 of about 620,538 (366)

Internal anal anal sphincter: Clinical perspective [PDF]

, 2017
Objective: To summarise current knowledge of Internal anal sphincter. Background: The internal anal sphincter (IAS) is the involuntary ring of smooth muscle in the anal canal and is the major contributor to the resting pressure in the anus ...
Emmanuel, A, Kumar, L
core  

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica)

The Anatomical Record, EarlyView.
Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc, Tommaso Gerussi, Bruno Cozzi, Rebecca M. Boys, Brian Chin Wing Kot, Matthew R. Perrott, Kane Fleury, Tabris Yik To Chung, Henry Chun Lok Tsui, Emma Burns, Trudi Webster, Stuart Hunter, Emma L. Betty, Odette Howarth, Carolina Loch, Sophie White, Steve Dawson, William Rayment, Ros Cole, Derek Cox, Tom Waterhouse, Hannah Hendriks, Anton van Helden, Muriel Johnstone, Ramari Oliphant Stewart, R. Ewan Fordyce, Karen A. Stockin   +26 more
wiley   +1 more source

OR-43 - DIVERSIDADE DO HPV NO CANAL ANAL E COLO DO ÚTERO DE MULHERES QUE VIVEM COM HIV

Brazilian Journal of Infectious Diseases
Introdução: A infecção pelo papilomavírus humano (HPV) está associada ao desenvolvimento de câncer nas regiões anogenital e de orofaringe. Pessoas que vivem com HIV apresentam maior risco de infecção por HPV, neoplasia intraepitelial e desenvolvimento de
Élida Mendes de Oliveira, José Antonio Cunha e Silva, Letícia Lintomen, Marcelo Alves Soares, Fabio Leal, Isabel Guimarães, Livia Ramos Goes, Juliana Domett Siqueira   +7 more
doaj   +1 more source

Anal canal squamous carcinoma

Journal of Coloproctology, 2017
Background: Anal canal carcinoma is a rare neoplasm, representing 2% of the digestive tumors, and the most common is squamous cell carcinoma, with an increasing incidence.
Maricruz Nunes Magalhães, Laura Elisabete Ribeiro Barbosa   +1 more
doaj   +1 more source

Haemorrhoids [PDF]

, 2016
Clinical information monographHaemorrhoids are vascular-rich connective tissue cushions located within the anal canal. Internal haemorrhoids lie proximal to the dentate line in the anal canal, whereas external haemorrhoids are located distal to the ...
Steele, RJC, THAHA, MA
core  

An Annotated Checklist of the Freshwater Fishes of Texas, with Keys to Identification of Species [PDF]

, 1991
Forty-five families and 247 species of fishes are known to inhabit the freshwaters of Texas. We report on the distribution and status of these fishes and provide a key to their identification.
Edwards, Robert J., Garrett, Gary P., Hubbs, Clark   +2 more
core   +1 more source

HPV-negative squamous cell carcinoma of the anal canal is unresponsive to standard treatment and frequently carries disruptive mutations in TP53

British Journal of Cancer, 2015
Background:Human papillomavirus (HPV), p16 expression, and TP53 mutations are known prognostic factors in head and neck squamous cell carcinoma, but their role in squamous cell carcinoma of the anal canal (SCCAC) is less well established.
D. Meulendijks, N. B. Tomasoa, Luc Dewit, P. Smits, R. Bakker, M. V. Velthuysen, E. Rosenberg, J. H. Beijnen, J. H. Beijnen, J. Schellens, J. Schellens, A. Cats   +11 more
semanticscholar   +1 more source

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

The Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

Basal internal anal sphincter tone, inhibitory neurotransmission, and other factors contributing to the maintenance of high pressures in the anal canal [PDF]

, 2011
Maintenance of the basal tone in the internal anal sphincter (IAS) is critical for rectoanal continence. Effective evacuation requires a fully functional rectoanal inhibitory reflex (RAIR)-mediated relaxation of the IAS via inhibitory neurotransmission (
Rattan, S., Singh, J.
core   +1 more source

The effects of childbirth on the pelvic-floor [PDF]

, 2000
Basically, vaginal delivery is associated with the risk of pelvic floor damage. The pelvic floor sequelae of childbirth includes anal incontinence, urinary incontinence and pelvic organ prolapse.
Allen RE, Anthony S, Frudinger A, Frudinger A, Gilpin S, Jackson S, Johanson RB, King JK, Labrecque M, Mac Arthur C, Mant J, Pigne A, Rasmussen KL, Rockner G, Sleep J, Smith AR, Snooks SJ, Sultan AH, Sultan AH, van Geelen J, Vessey MP, Viktrup L, Viktrup L, Wilson PD, Zetterstrom JP   +24 more
core   +1 more source