British Dictionary definitions for tissue tissue noun a part of an organism consisting of a large number of cells having a similar structure and functionconnective tissue; nerve tissue a thin piece of soft absorbent paper, usually of two or more layers, used as a disposable handkerchief, towel, etc an interwoven seriesa tissue of lies a woven cloth, esp of a light gauzy nature, originally interwoven with threads of gold or silver Show More rare to weave into tissue to decorate or clothe with tissue or tissue paper Show More Word Origin for tissue C The biological sense is first recordedfrom French, introduced c.
The aim of these lab classes is to provide students with educational resources to acquire basic practical skills of each subject, recognize, locate and describe cell types and basic tissues. Each of these practical sessions are structured around three main elements: Also, epithelial tissue form secretory glands epithelial glands.
However, we can find a cover epithelial tissue with scattered secretory cells.
Epithelial cells show different morphologies, ranging from a flattened cell to a prismatic cell, but have a common polyhedral shape because epithelial cells are grouped into layers or masses tightly juxtaposed. Epithelial cells nuclei also have different morphologies, ranging from a spherical or oval nucleus to elliptical nucleus.
Nuclear morphology often is in agree to the cell morphology, cuboidal cells have a spherical nucleus while flat cells have a flattened nucleus.
Epithelial tissues rests on a thin layer of connective tissue called lamina propria. The main function of lamina propria is to provide physical and metabolic support to the epithelium. Epithelial cells shows polarity.
Organelles and membrane proteins are distributed in different parts of the cell. The cell membrane faced the connective tissue is called the basal pole. Between cell membrane and lamina propria, a structure called basement membrane are find.
This structure binds epithelial cell membrane to the adjacent lamina propria. Opposite the basal pole there is the apical pole. Apical pole may have several cell membrane specializations such as microvilli 34 Digestive duct, Brush border microvillitransverse sectionedstereocillia and cilia.
Finally, cell membrane in contact with adjacent cell membranes are the side poles. Side poles shows structures related to cell junctions. Epithelial cover tissue is classified according to the number of layers and the morphological characteristics of the surface cells layer. A simple cell layer defines the Simple Epithelial Tissue while more than one cell layer defines the Stratified Epithelial Tissue.
Based on cell shape, simple epithelia are classified as squamous thin cellscubic about as wide as thick cells or columnar or prismatic taller than wide cells.Cancer: Cancer, group of numerous distinct diseases that are characterized by the uncontrolled multiplication of abnormal cells in the body.
Cancer is a major cause of sickness and death worldwide. Learn more about the history of cancer, cancer rates and trends, and the causes, diagnosis, and treatment of cancer. any substance capable, under appropriate conditions, of inducing a specific immune response and reacting with the products of that response; that is, with specific antibody or specifically sensitized T lymphocytes, or ashio-midori.comns may be soluble substances, such as toxins and foreign proteins, or particulates, such as bacteria and tissue cells; however, only the portion of the protein or.
Fistula Definition A Fistula is a permanent abnormal passageway between two organs in the body or between an organ and the exterior of the body.
Description Fistulas can arise in any part of the body, but they are most common in the digestive tract.
They can also develop between blood vessels and in the urinary, reproductive, and lymphatic systems. Epithelial Tissue. Epithelial tissue is made up of epithelial cells, which are vastly different from the muscle cells we just talked about.
These cells can be flat, cuboidal, or columnar. They are. Tissue definition, an aggregate of similar cells and cell products forming a definite kind of structural material with a specific function, in a multicellular organism.
See more. Healing (literally meaning to make whole) is the process of the restoration of health from an unbalanced, diseased or damaged organism. The result of healing can be a cure to a health challenge, but one can heal without being cured. The profession of nursing has been traditionally concerned with matters of healing, whereas historically the profession of medicine has been concerned with curing.