What is the structure of the transitional epithelium?
What is the structure of the transitional epithelium?
Structure of Transitional Epithelium Transitional epithelia are made of 3-4 layers of cells with the lowermost or basal layer staying in contact with the basement membrane. The cells of this basal layer are attached to the lamina propria through tonofilaments and hemi- desmosomes.
What is metaplastic change in the cervix?
Metaplastic change in the cervix and its physiological basis. As the female goes through puberty and reaches maturation, hormonal changes cause the cervix to evert, which in turn causes the fragile glandular epithelium to be exposed to a harsher, more acidic environment in the vagina. A similar process occurs during pregnancy.
What stage is Stage 3 of squamous metaplasia?
Stage 3: Mature squamous metaplasia – the immature cells have differentiated into mature squamous epithelium, which is nearly indistinguishable from the original squamous epithelium. Endocervical crypts may be seen deep to the surface epithelium identifying its origin from squamous metaplasia.
What is the role of metaplasia in esophageal cancer?
This metaplastic response involves the development of a columnar, secretory epithelium typical of the duodenum and small intestine. While this new mucous-producing epithelium protects against stomach acid, the metaplasia may serve as a precursor to esophageal cancer.
What is transitional housing for homeless people?
Transitional housing refers to a supportive – yet temporary – type of accommodation that is meant to bridge the gap from homelessness to permanent housing by offering structure, supervision, support (for addictions and mental health, for instance), life skills, and in some cases, education and training.
What is the difference between permanent and transitional housing?
Historically, transitional housing programs were situated within dedicated, building-specific environments, where there was more common space and less private space than might be the case in permanent housing environments.
How long can you stay in transitional housing in Canada?
An additional concern has to do with the time-limited nature of transitional housing. Most programs in Canada determine a maximum length of stay, which is often quite short (usually one year, but there are some examples in Canada where young people can stay eighteen months or more).
