|
| |
| | Epithelium |
 | | Epithelium plays an important role in homeostasis of the body and in maintaining the physiological parameters of the internal environment different from those outside the body. | | | Epithelium lines the surfaces of the body and is mainly located on the borders between the external and internal environments. | | | Stratified squamous epithelium is found in the esophagus and epidermis of the skin. |
|
http://www.technion.ac.il/~mdcourse/274203/lect2.html
|
|
| |
| | NTP: Abstract for TR-416 - o-Nitroanisole |
| | Focal hyperplasia of the transitional epithelium of the urinary bladder was present in one female rat that received 222 ppm and two male rats and six female rats that received 2,000 ppm. | | | The incidence of forestomach ulcers increased in male rats that received 2,000 ppm, and the incidence of focal hyperplasia of the forestomach increased with exposure level in male and female rats. | | | Adenomatous polyps of the large intestine were observed in a small number of exposed rats at the 6-, 9-, and 15-month interim evaluations. |
|
http://ntp-server.niehs.nih.gov/index.cfm?objectid=0709A42B-D232-74D3-055A884C4D0A929B
|
|
| |
| | Cloacal Papillomas in Psittacine Birds: A Retrospective Histopathologic Review |
| | The presence of squamous and transitional epithelium in the majority of cases reflects clinical observations that cloacal papillomas commonly arise at or near the mucocutaneous junction adjacent to the vent. | | | The vent is lined by stratified squamous epithelium. | | | The mean and median ages of affected birds are similar to those given in other reports. |
|
http://www.vet.uga.edu/IVCVM/1998/Stedman/Stedman.htm
|
|
| |
| | 2. Epithelium |
| | Keratinized stratified squamous epithelium covers the entire outer surface of the body as the epidermis of skin, to prevent desiccation. | | | You may worry about how to recognize transitional epithelium on a slide if it has the chameleon capability to change from squamous to columnar. | | | Villi are covered by simple columnar epithelium, which is what we are interested in for this laboratory session |
|
http://neuromedia.neurobio.ucla.edu/campbell/epithelium/wp.htm
|
|
| |
| | stratepi |
| | The name transitional comes from the ability of this epithelium to accommodate stretching in the urinary tract as fluid pressures vary. | | | Keratinized stratified squamous epithelium is found only in the skin! | | | As a "keratinized" or waterproofed component of the skin, stratified squamous epithelium provides substantial protection against friction, microbial invasion and dessication. |
|
http://www.mhhe.com/biosci/ap/histology_mh/stratepi.html
|
|
| |
| | Epithelia and Tissue Lab |
| | Pan through to the other side of the tissue to the next natural edge immediately opposite the transitional epithelium. | | | During this laboratory exercise be aware that slides of any organ will usually display more than one epithelium and more than one connective tissue type. | | | After looking at the edges and the center examine the transition zone. |
|
http://www.fsu.edu/~histo/two~1.htm
|
|
| |
| | Male Reproductive 5 The Duct System |
| | The genital ducts are tubular organs in which the lamina epithelialis varies from the stratified epithelium in the testes to a transitional epithelium in the urethra. | | | With its associated connective tissue and muscle, the ductus epididymis coils to form the head, body and tail of the epididymis which then continues into the ductus deferens. | | | This epithelium changes from transitional in the pelvic and penile urethra to stratified squamous epithelium at or before the opening of the urethra. |
|
http://www.cvm.okstate.edu/instruction/mm_curr/histology/mr/himrp5.htm
|
|
| |
| | Epithelium Lab |
| | You will have the opportunity to observe additional examples of stratified squamous epithelium during your study of the integument. | | | Therefore learn the characteristics of the tissue, rather than relying on memorizing the slides themselves. | | | Transitional epithelium is the specialized epithelium associated with urinary structures. |
|
http://courses.smsu.edu/emh420f/unit_1/Epithelium_lab.htm
|
|
| |
| | EPITHELIUM |
| | Therefore epithelium comes in a variety of forms adapted for a particular function. | | | When relaxed, the surface cells obtain a rounded morphology (Transitional Relaxed 1). | | | Pseudostratified epithelium is found primarily in the respiratory system and is often referred to as "Respiratory Epithelium". |
|
http://lifesci.rutgers.edu/~babiarz/epithe.htm
|
|
| |
| | Anus and perianal area |
| | anal transitional zone and squamous epithelium down to the perianal skin; cannot be identified by clinicians | | | Often involvement of glandular epithelium or hyperplastic changes of transitional mucosa | | | Accompanied by hypertrophic papilla, infected crypt and skin tag (due to edema and fibrosis) |
|
http://www.pathologyoutlines.com/anus.html
|
|
| |
| | Pathology |
| | The lesion behaves in a benign fashion but recurrences are frequent after transurethral resection. | | | Question: In which other part of the body are inverted papillomas found? | | | Cystic change as well as focal colonic metaplasia may be seen. |
|
http://www.med-ed.virginia.edu/courses/path/urinary/uroth3.cfm
|
|
| |
| | Blue Histology - Epithelia and Glands |
| | At a first glance a transitional epithelium looks like a stratified cuboidal epithelium. | | | They increase surface area by a factor of ~20 and thereby facilitate absorption. | | | In the "relaxed" state of the epithelium, it seems to be formed by many cell layers. |
|
http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Epithelia/Epithel.htm
|
|
| |
| | Immunohistochemical study of parathyroid hormone-related protein in vesical transitional epithelium of patients with ... |
| | In contrast, transitional epithelium in the biopsy specimens of ten control subjects with no history of bladder cancer showed no immunostaining with either of the PTHrP peptides. | | | 138), as compared to the vesical transitional epithelium of able bodied individuals with no history of vesical malignancy. | | | Immunohistochemical study of parathyroid hormone-related protein in vesical transitional epithelium of patients with spinal cord injury |
|
http://www.nature.com/cgi-taf/DynaPage.taf?file=/sc/journal/v37/n11/abs/3100921a.html
|
|
| |
| | eMedicine - Transitional Cell Carcinoma, Renal : Article by Badrinath R Konety, MD |
| | Medicine is a constantly changing science and not all therapies are clearly established. | | | Gautreaux MD, Hawkins SC, Rogers J: Typing of a specimen from a transitional cell carcinoma obtained from a renal needle biopsy. | | | Pathophysiology: The predominant histologic pattern of TCC is a papillary tumor with stratified, nonkeratinizing epithelium supported on a thin fibrovascular core. |
|
http://www.emedicine.com/MED/topic2003.htm
|
|
| |
| | Transitional epithelium |
| | I thought those were all lined with transitional - is it transitional and some other kind????? | | | There is an exam question that says "The bladder and ureters are lined with which type of epithelium?" But transitional epithelium is not one of the choices. |
|
http://mtsu32.mtsu.edu:11024/_disc1/00000044.htm
|
|
| |
| | Biology: transitional epithelium |
| | In my college anatomy and physiology class, we are discussing transitional epithelium. | | | Your prompt response is so appreciated, as I desperately need extra credit :) | | | Our instructor said we could receive 2 extra credit points by getting the opinion of another scientist on transitional epithelium. |
|
http://experts.about.com/q/664/3692472.htm
|
|
| |
| | Virtual Hospital: Atlas of Microscopic Anatomy: Section 1 - Cells |
| | The term transitional epithelium does not imply that this epithelium is in actual transition from one type to another, but rather refers to the appearance of the cells, which changes as the organs with which they are associated are stretched or relaxed. | | | The surface cells of this epithelium vary in shape from squamous when stretched to columnar when contracted. | | | Transitional epithelium (uroepithellum): This stratified epithelium is found lining the urinary tract from the renal calyces to the urethra. |
|
http://www.vh.org/adult/provider/anatomy/MicroscopicAnatomy/Section02/Plate0224.html
|
|
| |
| | Bladder Cancer - What is Cancer? |
| | Just as there is a physical boundary between organs in the body, there are also boundaries within the organ itself. | | | Abnormally behaving cells may or may not appear like their normal predecessors, from which they are derived. | | | In bladder cancer, the most common cell type to become a cancer is the transitional epithelial cell, designated as transitional cell carcinoma or TCC. |
|
http://www.cornellurology.com/cornell/bladder/gi/cancer.shtml
|
|
| |
| | Bioline International Official Site (site up-dated regularly) |
| | However in certain pathological conditions, squamous epithelium may be found replacing the transitional epithelium. | | | The usual response of the transitional cell epithelium of the urinary tract to chronic irritation is proliferation. | | | In this condition, the normal transitional epithelium of the urinary tract is replaced by squamous epithelium. |
|
http://www.bioline.org.br/request?is04025
|
|
| |
| | URINARY_1 |
| | The epithelium on the left is relaxed and the cells appear stacked. | | | Notice the dome-shaped cells along the free edge. | | | On the right, the epithelium is stretched,the epithelial cells flatten and the overall epithelium becomes thinner. |
|
http://www.nku.edu/~dempseyd/URINARY_1.htm
|
|
| |
| | Case of the Month July 2002 |
| | In short, patients with TCC of ovary generally present with a pelvic mass, pelvic pain and/or postmenopausal bleeding. | | | Apparently the celomic epithelium undergoes metaplastic changes to urothelium/transitional epithelium. | | | On the other hand, some experts claim that transitional cell carcinoma of the ovary is a variant of serous carcinoma with pseudopapillary pattern, although the current view favors that transitional cell carcinoma of the ovary is a separate entity. |
|
http://www.hsc.wvu.edu/som/pathology/pathcases/apcases2003/apcasejan03/apcasejan03discussion.htm
|
|
| |
| | EPITHELIA |
| | Epithelial cancers become much more dangerous once they break through the basal lamina, so this boundary is of great clinical importance. | | | There are times when we will see abrupt transitions from one type of epithelium to another, but this is usually at a change of tissue/organ, such as the transition from esophagus into stomach. | | | The epithelium facing the lumen of the esophagus is an example of a stratified squamous epithelium. |
|
http://medocs.ucdavis.edu/CHA/402/labsyl/01/02.htm
|
|
| |
| | 2740 EPITHELIAL TISSUES |
| | Locations: This is a respiratory epithelium being found in such places as the nasal septum, trachea, and bronchi. | | | At the left observe the ureter is lined by transitional epithelium (A). | | | The cilia (B) are easily seen.The mucus producing goblet cells are not visible in this micrograph.(The pseudostratified ciliated columnar epithelium you observed in the laboratory was not as "deep" as seen here and included globlet cells.) |
|
http://www.unomaha.edu/hpa/2740epithelium.html
|
|
| |
| | URINARY SYSTEM - LoveToKnow Article on URINARY SYSTEM |
| | Among the Cyclostomata (lampreys and hags) the pronephros persists throughout life in Bdellostoma and probably in the hag (Myxine), but a Woiffian (archinephric) duct has been evolved so that the tubules no longer open on the surface by nephridiopores. | | | The position where the germinal epithelium arises is indicated at a. | | | It has been surmised that in a transitional type the tubules opened into a groove on each side of the surface of the animal and that the edges of this, coming together, formed a duct. |
|
http://www.1911ency.org/U/UR/URINARY_SYSTEM.htm
|
|
| |
| | Squamous metaplasia of the Bladder |
| | The urothelium is no longer transitional in character. | | | •The normal transitional epithelium will undergo squamous metaplasia as an adaptive change to chronic irritation, such as from bladder calculi., | | | •The normal transitional epithelium of the bladder is replaced by stratified squamous epithelium. |
|
http://pathweb.uchc.edu/eAtlas/GU/1351.htm
|
|
| |
| | [No title] |
| | What does this structure look like at the | | | of the trachea is an especially good example of this type of epithelium. | | | At first glance, this epithelium may look like stratified squamous |
|
http://www.urmc.rochester.edu/smded/Histology/Manuals/Epithelium.html
|
|
| |
| | Epithelium Index |
| | Mesothelium, simple squamous epithelium (at edge of tissue), intestine | | | Mesothelium, silver nitrate, surface view - simple squamous epithelium, covering outer surface of intestine | | | Pseudostratiried ciliated columnar epithelium with goblet cells (trachea) |
|
http://www.med.uc.edu/medware2/microanatomy/carous02/indp02d.htm
|
|
| |
| | Histology Lab Part I - Epithelium |
| | This lab will focus on the epithelial tissues in structure only. | | | The four major tissue categories include epithelium, connective tissue, muscle and nervous tissue. | | | Before going any further, experiment with these cells to see if you can design epithelial tissues based on the cell shape and number of cell layers. |
|
http://faculty.nhmccd.edu/manewsome/Histology_lab1.html
|
|
| |
| | Bladder Cancer - Types of Cancer |
| | That is, they have not invaded into deeper tissue layers such as muscle, or even the fibrous layers separating the epithelium from the muscle. | | | The following list will categorize TCC from its "pre-invasive" state, known as carcinoma in situ, to its more invasive state when it penetrates beneath the epithelium, and finally to the point when it has metastasized or spread to distant organs. | | | The second most common type in the U.S.-though in some countries such as Egypt, the most common-is squamous cell carcinoma (SCC). |
|
http://www.cornellurology.com/cornell/bladder/gi/types.shtml
|
|
| |
| | Pathology |
| | Transitional epithelium is a stratified epithelium characterized by the fact that the most apical cells are the roundest and largest in diameter. | | | The mucosa of the renal pelvis, ureter and urinary bladder is lined by stratified epithelium, the urothelium or transitional epithelium (from the erroneous concept that this epithelium constitutes a transition between stratified squamous and columnar epithelia). | | | Under the epithelium is a connective tissue layer and beneath that two layers of smooth muscle, inner longitudinal and outer circular. |
|
http://www.med-ed.virginia.edu/courses/path/urinary/uroth1.cfm
|
|
| |
| | Transitional epithelium |
| | Transitional epithelium is a stratified tissue in which the cells are all have a fairly round shape when the organ it lines is not distended (stretched out). | | | The layer of tissue just underneath the epithelium is connective tissue, and at the bottom of the image you can see some smooth muscle tissue. | | | This allows organs lined with transitional epithelium to change shape without damaging the epithelial lining. |
|
http://www.austin.cc.tx.us/histologyhelp/tissues/th_trans_e.html
|
|
| |
| | [No title] |
| | Simple squamous epithelium that has been keratinized to resist abrasion. | | | Stratified squamous keratinized epithelium refers to the epidermis. | | | Bladder transitional epithelium is stratified and therefore not all cells touch the basal lamina. |
|
http://cpmcnet.columbia.edu/student/ssn/histology/prac_exam_10-23-02.doc
|
|
| |
| | Lab Exercises- Calyx, Ureter, Bladder |
| | Again, the epithelium is transitional, like that of the ureter. | | | The epithelium then joins with that of cup like extensions of the ureter called the MINOR CALYCES (singular=calyx). | | | Urine is emptied into the calyces which are like funnels that send it to each of the ureters. |
|
http://cellbio.utmb.edu/microanatomy/kidney/bladder_lab.htm
|
|
| |
| | Epithelium |
| | Transitional epithelium is a type of stratified epithelium characteristically found within the human urinary system. | | | There is a considerable amount of variation in the appearance of transitional epithelium. | | | Often the superficial surface cells are large and rounded, giving the free surface an irregular or undulating appearance. |
|
http://www.usc.edu/hsc/dental/ghisto/epi/c_36.html
|
|
| |
| | SIU SOM Histology CRR |
| | A transitional epithelium superficially resembles a nonkeratinized stratified squamous epithelium. | | | In this specimen from the renal pelvis, the connective tissue immediately beneath the epithelium is inconspicuous, obscured by a layer of smooth muscle (note elongated nuclei). | | | This image shows the transitional epithelium and loose connective tissue that comprise the mucosa of the urinary tract. |
|
http://www.siumed.edu/~dking2/crr/RN022b.htm
|
|
| |
| | epithelium: Definition and Much More From Answers.com |
| | Transitional: This is a specialized type of epithelium found lining organs that can stretch, such as the bladder or the ureter of mammals. | | | Places where squamous cells can be found include the alveoli of the lungs, the filtration of the kidneys, and the major cavities of the body. | | | Ciliated Simple Columnar: Found in intestine and kidney (specifically, distal convoluted tubule) |
|
http://www.answers.com/topic/epithelium-1
|
|
| |
| | eSynopsis of Papillary Transitional Cell Carcinoma of the Bladder |
| | •Patients with transitional cell carcinomas of the bladder are usually over 40 years of age. | | | •Some transitional cell carcinomas are flat and may be ulcerating. | | | Continuous exposure to carcinogens/irritants may lead to accumulation of genetic mutations that are oncogenic., |
|
http://esynopsis.uchc.edu/S293.htm
|
|
| |
| | [No title] |
| | [3-13]:TEM 10-4; Tracheal Epithelium; Columnar ciliated epithelium containing ciliary processes (1a. | | | A layer of smooth muscle cells (2) and a capillary can also be observed (3). | | | [3-16]:TEM 14-2; Small intestine- A simple columnar epithelium with 1. |
|
http://www.georgetown.edu/dml/educ/hist/lab3/lab3.txt
|
|
| |
| | stratified |
| | This epithelium covers surfaces in the urinary tract that are subject to periodic stretching. | | | These types of epithelia are rare in the body. | | | This epithelium consists of rounded cells that push their daughter cells up and away from the underlying blood supply. |
|
http://www.ndsu.nodak.edu/instruct/tcolvill/135/stratified.htm
|
|
| |
| | TRANSITIONAL EPITHELIUM |
| | This is a diagnostic feature of this epithelium. | | | Another way to remember transitional epithelium is that the cells have the capacity to stretch and flatten so the calyx and bladder can expand. | | | Transitional epithelium contains cells that are flattened and cells that are cuboidal; hence the name "transitional". |
|
http://cellbio.utmb.edu/microanatomy/epithelia/transitional_epithelium.htm
|
|
| |
| | Tumor - Wikipedia, the free encyclopedia |
| | Depending on tissue of origin, tumors may be: | | | transitional epithelium: transitional cell papilloma, transitional cell carcinoma | | | squamous epithelium: squamous cell papilloma, squamous cell carcinoma |
|
http://en.wikipedia.org/wiki/Tumour
|
|
| |
| | Colloidal Silver |
| | Frank underplays the normal concentrations of and ignores the potential peak concentrations of ammonia in the human body, especially during infectious illness and in particular the importance of ammonia concentrations at certain sites in the body, such as at the colonic lumen and the liver and kidneys. | | | Perhaps a better comparison than the transitional product ammonia with chloride, which widely interacts with other elements and is critical in many normal bodily processes, would be nitrogen, the ammonia substrate, which is twenty times more abundant than chloride in the human body (Documenta Geigy, Scientific Tables). | | | Frank also ignores the significant chloride secretory inhibition effect of ammonium at the epithelium of the colonic mucosa where silver must be at its smallest molecular potential in order to be assimilated. |
|
http://www.gaiaresearch.co.za/silver.html
|
|
| |
| | Parathyroid hormone-related protein (134) and urothelial redifferentiation in the neuropathic urinary bladder |
| | 34)) in the vesical epithelium of biopsies obtained from patients with non-neuropathic bladder and those with neuropathic bladder. | | | Results: In the control group, the transitional epithelium showed no immunostaining, or at the most, very faint positive staining was seen in the transitional epithelium of non-neuropathic bladder. | | | This observation opens up avenues for innovative therapy with PTHrP or its analogues for possible modulation of urothelial differentiation in the neuropathic bladder. |
|
http://www.nature.com/cgi-taf/DynaPage.taf?file=/sc/journal/v38/n9/abs/3101044a.html
|
|
| |
| | Kidney/Urinary Bladder |
| | The clinical implications and diagnostic pitfalls in 125 specimens submitted for frozen section were the focus of our study. | | | The kidney biopsy is one of the few tissues in surgical pathology where routine examination involves light microscopy with H and E and special stains, electron microscopy, and direct immunofluorescence. | | | The penile urethra was lined by transitional epithelium, whereas the prostatic urethra was lined by glandular cells with superficial androgen receptor-positive cells that had lost much of their secretory function. |
|
http://www.thedoctorsdoctor.com/bodysites/kidney_bladder.htm
|
|
| |
| | transitional |
| | This is an example of transitional epithelium from the urinary bladder. | | | Below the dark layer of transitional cell nuclei is the subucosa. | | | The arrows are on the actual transitional cell layer. |
|
http://cal.vet.upenn.edu/histo/epithelium/transitional.html
|
|
| |
| | The Ureter |
| | Although the epithelium is termed a 'mucosa' there are no mucus secreting cells or glands. | | | The epithelium sits on a connective tissue submucosa. | | | The epithelium is able to cope with distention by the arrangement of cells and by recruitment of the folds. |
|
http://www.med.mun.ca/anatomyts/renal/auret4.htm
|
|
| |
| | Transitional Epithelium from the lining of the Ureter |
| | Transitional epithelium is limited to the lining of the "collecting" portions of the urinary system, from the minor calyxes in the renal medulla, to the "neck" of the bladder. | | | This layer of transitional epithelium is about 7 cell layers deep and appears "cuboidal". | | | But that "appearance" becomes stratified squamous, as urinary "collecting" walls are stretched. |
|
http://www.dmacc.cc.ia.us/instructors/transiti.htm
|
|
| |
| | Re: Transitional epithelium |
| | Transitional epithelium is the correct answer, and it is not a choice on the list. | | | That's the kind of thing we'll be trying to catch when turning the question bank into quizzes. | | | Sorry it took so long to answer this; my Monday was crazy. |
|
http://mtsu32.mtsu.edu:11024/_disc1/00000046.htm
|
|
| |
| | Urinary Bladder |
| | Some authorities do not include a submucosa in the wall of the urinary bladder--in their opinions, all of the connective tissue (ct) between the mucosa and the muscularis is part of the lamina propria of the mucosa. | | | It is found in only three organs: ureters, urinary bladder, and part of the urethra. | | | To the left of the epithelium is the connective tissue (ct) that includes both the lamina propria of the mucosa and the submucosa. |
|
http://www.austin.cc.tx.us/histologyhelp/organs/ox_urin_bladder.html
|
|
|
