Connective tissue consists mainly of long fibers embedded in noncellular matter, the ground substance. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Tissues and cells microscopic anatomy did you know that you are made up of only four tissue types. Cbse class 9 science chapter 6 tissues notes in pdf are available for free download in mycbseguide mobile app. It is composed of variety of cells, fibre nonliving products of cell and semisolid matrix between cells.
The matrix usually includes a large amount of extracellular material produced by the connective tissue cells that. Reticular connective tissue loose connective fine interlacing fibers and cells. Dense connective tissue is composed of large amounts of closely packed collagenous fibers. Small amounts of connective tissue are found intermingled with other tissues throughout all organs of the body. Tissue classification connective tissue epithelia muscle nerve extracellular matrix extracellular matrix continuous.
As you examine the slide, note the large, oval shaped. Muscular tissues connective tissues urogenital system lining of body cavities and blood vessels endoderm becomes. The fibrous elements are collagen fibers, reticular fibers and elastic fibers. Connective tissue, group of tissues in the body that maintain the form of the body and its organs and provide cohesion and internal support.
Transmit messages nerve impulses from one part of the body to another. These tissues create padding beneath the skin, kidneys, and eyeballs. The following information identifies a few select features of connective tissue. Introduction to tissues these cells are organized into four basic tissues that, in turn, are assembled to form organs. Loose connective tissue gets its name from the loose connection of fibers that it contains including elastic fibers made of elastin which is an extracellular protein with elastic properties. Connective tissues make up the connecting or supporting framework for most of the organs of the body. Ppt connective tissue powerpoint presentation free to. Connective tissues are the major supporting tissue of the body. In comparison to loose connective tissue, dense tissue has a higher proportion of collagenous fibers to ground substance. Connective tissue definition of connective tissue by. Structural organisation in animals ncert notes for class 11 biology download in pdf points to remember. Such a tissue possesses varieties of subtypesgeneral or ordinary connective tissue, haematopoietic tissue, and specialised tissues which include cartilages, bones, joints and others.
When you examine tissue at a microscopic level, having the ability to detect the presence and location of the four basic tissues enables you to identify the organ that you are looking at. Gk on animal tissues and their functions pdf notes. It is thicker and stronger than loose connective tissue and forms a protective capsule layer around organs such as the liver and kidneys. Here are your notes on the epithelial tissues of human body. Connective tissue ranges from avascular to highly vascular. Some of the individual fat cells are often broken during tissue preparation, but the overall impression of what the tissue looks like is the important point. Most connective tissues have a nerve supply as does epithelial tissue. In histological technique a tissue is the bit under study. Note the extensive lateral interactions that give the structure its mechanical strength. A group of similar cells along with intercellular substances which perform a specific function. Useful notes on the epithelial tissues of human body.
Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Structural organisation in animals ncert notes download pdf. Tissues class 9 notes science mycbseguide cbse papers. Made of hard matrix provides strength, and protein fibers including collagen provide strength and flexibility functions. Connective tissue fibers are of three principal types. Connective tissue that provides support and framework for the body consists of fibrous proteins and nonfibrous ground substance in varying proportions depending on their functions 2. They provide internal support as well as give and maintain form to the body. Areolar loose connective tissue isareolar and adipose the most widely distributedconnective tissue connective tissue. The connective tissues include several types of fibrous tissue that vary only in their density and cellularity, as well as the more specialized and recognizable variants bone, ligaments, tendons. As the name suggests a connective tissue acts as a connecting medium, with some specialized functions. Adipose tissue defies most criteria for ct, but frequently arises from fibroblasts or adventital cells resembling ct fibroblasts, and adipocytes are invested in. The next most abundant substance, protein, is a distant second, constituting only about 18 percent of the total.
Connective tissue mucoid connective tissue loose connective tissues areolar connective tissue adipose tissue reticular connective tissue dense connective. Consists of webs of fibers and a variety of cells embedded within a matrix of soft,sticky gel. Adipose tissue aka fat, beneath skin, around kidneys and eyeballs, abdominal membranes. Chapter 12 meats, poultry, and fish 255 structure muscle tissue components water is the primary constituent in muscle. If the organ is suspended in the body cavity, this layer is called a tunica serosa and it is covered by a simple squamous epithelium that is called mesothelium. Chapter 4 connective tissue 57 figure 415a,b dense regular connective tissue, tendon figure 415c clinical correlation. Clinical features focal or segmental lesions of small to medium sized arteries acute necrotising inflammation of the arterial media with fibrinoid necrosis and inflammatory cell infiltrate, resulting in, 1. Embryonic connective tissues types histological findings specialized cells histological appearance. In animals, the connective tissue is very complex has a vital role. As may be obvious from its name, one of the major functions of connective tissue is to connect tissues and organs. The connective tissue is derived from the embryonic mesoderm. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from.
Collagen, which is the most abundant protein, constitutes about onethird of all body protein. Collagen fibers are present in all types of connective tissue but vary greatly in their. There is a wide range of vascularity among connective. Matrix forms the main bulk of this tissue, whereas the cells are loosely spaced and less in number. Connective tissue an overview sciencedirect topics. Science class 9 notes free download pdf chapter 6 tissues 1. More than 19 different types of collagens, encoded by 30 widely dispersed genes with characteristic distribution. Organs, such as the small intestine, are structurally weaker than tendon because they require connective tissue to provide metabolic and immune support so the connective tissue must contain blood vessels, macrophages, lymphocytes. A summary of the various kinds of connective tissues is given in figure 1 and table 1. Connective tissue in organs contains much less collagen and is more cellular. Connective tissue lecture location of connective tissue. Science class 9 notes free download pdf chapter 6 tissues.
Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. Tissue are groups of cells with a common structure and. Framework of an organ, a gland or other structure, usually composed of connective tissue cells. Connective tissue serve as a connecting link for binding, supporting and strengthening all other body tissues together. Ix biology chapter notes brilliant public school, sitamarhi.
The best app for cbse students now provides tissues class 9 notes latest chapter wise notes for quick preparation of cbse exams and school based annual examinations. Tendinosis figure 416a,b loose connective tissue synopsis 42 functions of connective tissue figure 417a,b loose connective tissue, small intestine figure 417c clinical correlation. Classification of connective tissue according the amount of cells, fibers and amorphous ground substance. Connective tissue fillin notes student astephensscience.
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