The connective tissue is the most abundant and widely distributed in complex animals. It is made up of a matrix consisting of living cells and non-living substance called ground substance. The ground substance is made of an organic substance (protein) and an inorganic substance (usually a mineral or water). It separates the cells and varies in consistency from solids to semifluid to fluid. The principal cell of connective tissue is the fibroblast which makes the fibers found in nearly all connective tissues. There are three kinds of fibers; the white collagen fibers contain collagen, a protein that gives them flexibility and strength. Reticular fibers are very thin collagen fibers that are highly branched and form delicate supporting networks. The yellow elastic fibers contain elastin; a protein that is not as strong …show more content…
It is tough, yet flexible and comprises membranes. Its presence in lungs, arteries and the urinary bladder allows these organs to expand. The adipose tissue serves as the body’s primary energy reservoir. It is loose fibrous connective tissue composed mostly of enlarged fibroblasts that store fat. They function to insulate the body, and contribute to body contours, and provide cushioning. Adipose tissue is found beneath the skin, around the kidneys and on the surface of the heart. The dense fibrous connective tissue contains large amount of collagen fibers and few cells or matrix material. The fibers can be arranged irregularly or regularly with the strands lined up in parallel. Irregularly arranged connective tissues are found in areas of the body where stress occurs from all directions such as the dermis of the skin. Regular fibrous connective tissue is found in tendons, which connect muscle to bone, and ligaments, which connect bones to other bones as
Collagen is a tough fibrous protein that plays an essential role in binding, holding together, strengthening, and providing elasticity to bodily cells and tissues. There are six major types of EDS that I will discuss, however I will only go into detailed discussion on two of the six types of EDS. The two major types of EDS are Classical EDS and Hypermobile EDS. These two types make up 90% of all EDS cases. I will discuss the general symptoms of these two types along with pathology, then diagnostic factors, and the different treatments for this disorder (Smith).
It is much thicker than the epidermis and contains collagen, reticular and elastic fibers, and is vascular. The area where the dermis meets the epidermis is unique in that the epidermis contains ridges at the stratum basale layer which interlocks with the dermal papillae, which are upward projections, like waves, on the uppermost surface of the dermis. The dermis had two sublayers. The papillary layer is in the dermal papillae and near it and is made up of areolar tissue. The reticular layer is dense irregular connective tissue that is found at the basal end of the dermis and contains collagen and adipose
The suspensory ligament is found down the back of the cannon bone that starts just below the knee or hock and splits into two parts that pass around the back of the ankle and end on the front of the long pastern bone. Acute front suspensory ligament injuries are most commonly found in eventers and jumpers due to the speed and the increasing load on the forelimbs from jumping and the chance of misstep.
So far, various techniques have been used for reconstruction and regeneration of maxillary and mandibular bone defects. Autogenous bone grafting, guided bone regeneration (GBR), distraction osteogenesis and nerve transpositioning are among these regenerative techniques (1-8). Decision making for the treatment could be influenced by the type, size and location of the bone defects (2, 3, 9, 10). GBR had high success rate in treating small alveolar defects such as dehiscence or fenestration. Regenerative bony walls around the defect with ingrowing blood vessels can begin osteogenesis (11) larger bone defects with insufficient regenerative walls and an low quality avascular bed need varied amount of autogeneous bone graft from extra oral or intra oral donor sites, however, the patient may suffer from complications in donor site as well as bone graft resorption.(10, 12-15)
Elastic fibres enable the wall to stretch as blood surge through at high pressure. Tunica externa is the outer layer of connective tissues containing elastic and collagen fibres. It provides support for the blood vessel and attaches it to whatever other tissue it runs through. Artery walls are very thick and strong. The tunica media which is the thickest part of the wall contains huge amount of elastic fibres which enables the wall to stretch and withstand the blood surging out at high pressure.
Epithelia tissue : Epithelial tissue, the type of tissue that lines the surfaces and cavities of your body 's organs, epithelia may be composed of several layers of cells called compound epithelia or just a single layer known as simple epithelia.
The pancreas can be divided into two sections when studying the histology. The pancreas has exocrine and endocrine functions, each with unique cell types. The exocrine pancreas serves to secrete digestive enzymes into the duodenum. Some of the specific enzymes and secreted substances are Proteases, lipase, amylase, bicarbonate, and water (Bowen, “Exocrine Secretions”). These enzymes are used to break down protein, fat, and carbohydrates respectively. The bicarbonate simply act as an acid buffer to prevent damage of the small intestine as the stomach acid must be neutralized. The enzymes are created in acinar cells and the bicarbonate is synthesized in epithelial cells surrounding pancreatic ducts (Bowen “Exocrine
After the skin, there is a layer called the dermis. The dermis is a broad layer of fibrous and elastic tissue (made mostly of fibrillin, elastin, and collagen) which gives the skin its flexibility and strength. The dermis incorporates nerve endings, sweat glands and oil glands, hair follicles, and blood
This paper focuses on the benefits of stem cell research in the medical and nursing field. New technology is always being created to help us understand the way the human body works, as well as ways to help us improve diseased states in the body. Our bodies have the ability to proliferate or regrow cells when damage is done to the cells. Take for example the skin, when an abrasion or puncture to the skin causes loss of our skin cells, the body has its own way of causing those cells to regrow. The liver, bone marrow, heart, brain, and muscle all have cells that are capable of differentiating into cells of that same type. These are called stem cells, and are a new medical tool that is helping regrow vital organs in our body to help us survive. Stem cells can come from adult cells, or the blastocyst of the embryo. The cells that come from these are undifferentiated, and can be specialized into certain cell types, making them available for many damaged tissues in the body. While using stem cells in the body is a main use, they are also being used to help doctors understand how disease processes start. By culturing these cells in the lab and watching them develop into muscles, nerve cells, or other tissues, researchers are able to see how diseases affect these cells and possibly discover ways to correct these diseases. While researchers have come very far in using stem cells, there are still many controversies to overcome when using these cells.
The cytoskeleton is made up of three different types of filaments, actin filaments, intermediate filaments and microtubules. Actin filaments are the thinnest, they are also known as microfilaments. They create a band under the plasma membrane, this gives strength to the cell and links transmembrane proteins such as cell surface receptors to cytoplasmic proteins. Intermediate filaments include keratins, lamins, neurofilaments and vimentins. Keratins form hooves, horns and hair and are found in epithelial cells. Lamins form a type of mesh that ‘stabilizes the inner membrane of the nuclear envelope’ (Biology Pages). Neurofilaments bring strength to the axons of neurons and vimentins provide mechanical support to cells – particularly muscles. The cytoskeleton is also involved in cell
Tissues are composed of groups of cells that have similar shapes and functions. There are four main types of tissue found in the human body: epithelial tissue, connective tissue, muscular tissue, and nervous tissue. Each tissue has unique characteristics that differentiate them from one another. Epithelial tissue covers the surface of the body, connective tissue adds support and structure to the body, muscular tissue contracts to allow movement, and nervous tissue controls the organs (Hoehn & Marieb, 2007, p. 118).
“Fibroblast responses to variation in soft tissue mobilization pressure.” Medicine and Science in Sports and Exercise. April 1999: 531-5. Hargrove, Eugene C., ed. Animal Rights/Environmental Ethics Debate, Inc. Environmental Perspective.
There are three simple tissues namely, parenchyma, collenchyma, and sclerenchyma. Parenchyma is thought of as the ground tissue of an axis since it occurs in greatest abundance and is the tissue in which the vascular tissues are embedded. Parenchyma cells may be isodiametric in both the pith and the cortex, but are more mostly longitudinally elongated in the cortex. They have comparatively thin walls. Wall layers are continuously shaped regions. These simple pits usually occur opposite each other, forming pit-pairs in the walls of contiguous cells. Plasmodesmata (specialized strands of endoplasmic reticulum) form interconnections with the protoplasts of adjacent living cells through simple
In its nature, collagen is like the backbone of the skin and is responsible for its elasticity and structure. It’s also responsible for replacement of dead skin cells with new ones giving the skin a radiant
Muscle tissues grow by means of physical activity in the same way they are able to become more well-defined (with regards to physical