Jun 12, 2018 elastic cartilage is a type of connective tissue that is found in the outer ear and epiglottis. Although it is the most abundant and widely distributed of the primary tissues, the amount of connective tissue in a particular organ varies. Most other ligaments do not have a preponderance of elastic fibers, and are similar to tendon in composition, although not as regularly arranged. Elastic fibers include elastin, elaunin and oxytalan elastic tissue is classified as connective tissue proper. Conversely, the elastic component allows an elastic stretch, or temporary elongation, with the tissue. In this micrograph of loose connective tissue of the tracheal mucosa numerous labeled cells of the connective tissue are present. It is labeled this due to its intense concentration of elastic fibers in the extracellular matrix. Here is a labeled view of loose areolar connective tissue. Difference between loose and dense connective tissue.
Elastic cartilage is very cellular note the abundant chondrocytes throughout this tissue. Elastic connective tissue is a technical term for body tissue that contains a large amount of elastin, one of the proteins that make up connective tissue in general. Elastic fibers are the important resilient component of mammalian connective tissue, and their presence is necessary for the proper structure and function of the cardiovascular, pulmonary, and intestinal systems. The thick strands are the collagen fibers, thin strands are the elastic fibers, the small dark purple structures are the nuclei of fibroblast and the granularlooking cell which is a mast cell. Elastic connective tissue is a modified dense connective tissue that contains numerous elastic fibers in addition to collagen fibers, which allows the tissue to return to its original length after stretching figure 4. This is a closer magnification of the areolar connective tissue. Elastic cartilage, which is yellow in appearance, is more pliable the third type, called. Connective tissue boundless anatomy and physiology. Like to the timber framing of a house, the connective tissue. It contains elastic fiber networks and collagen fibers. Adipose tissue, connective tissue consisting mainly of fat cells adipose cells, or adipocytes, specialized to synthesize and contain large globules of fat, within a structural network of fibres.
Adipose connective tissue 400x the bar labeled a indicates the width of one adipose cell adipocyte. Loose connective tissue areolar, adipose and reticular dense connective tissue regular, irregular, elastic three types of loose connective tissue. Lab notes home page kentucky community and technical. This section of elastic connective tissue is from the wall of the aorta. Connective tissue an overview sciencedirect topics. This type of tissue is particularly common in areas of the body where multidirectional force is frequently exerted. Dense connective tissue is composed of large amounts of closely packed collagenous fibers. Unlike epithelial tissue, which is composed of cells. Loose connective tissue lct, also called areolar tissue, belongs to the category of connective tissue proper. May 20, 2020 connective tissue is mainly a supporting tissue that binds and supports organs and the body as a whole. If you would like a large, unwatermarked image for your web page or blog, please purchase the appropriate license. Other components include collagen fibers c and elastic fibers ef read more about loose connective tissue, 40x. In this photo of areolar connective tissue, nuclei of cells are stained but the cytoplasm is pale and not distinguishable. The ecm is composed of a moderate amount of ground substance and two main types of protein fibers.
May 19, 2020 dense irregular connective tissue, which is made up of elastic fibers and a type of protein fiber called collagen, provides protection to the tissues or organs it surrounds. Classification of connective tissue the histology guide. Dense connective tissue, is one of the types of connective tissue also. Elastic tissue is classified as connective tissue proper. Elastic connective tissue, as the name implies, helps the body maintain homeostasis by regulating blood pressure and helping the body exhale normally.
Types of connective tissues with diagram animal tissue. The elastic fiber is formed from the elastic microfibril consisting of numerous proteins such as microfibrillarassociated glycoproteins, fibrillin, fibullin, and the elastin receptor and amorphous elastin. Types of connective tissue with examples science trends. Oct 12, 2001 loose connective tissue areolar areolar connective tissue. Elastic fibers differ from collagen in the ease with which they stretch and recoil.
If you would like a large, unwatermarked image for your web page or. Areolar connective tissue is a loosely arranged connective tissue that is widely distributed in the body and contains collagen fibers, reticular fibers and a few elastic fibers embedded in a thin, almost fluidlike ground substance. Hyaline cartilage trachea, 100x hyaline cartilage, total mag. Which of the following is not a fiber found in connective tissue. The extracellular matrix found in elastic tissue is made out of only a limited amount of ground substance. Dense connective tissue, is one of the types of connective tissue also referred to as dense fibrous tissue due to relative abundance of the collagen. The major function of the loose connective tissue is to serve as a supporting matrix for the blood vessels, lymphatic vessels, nerves, muscle fibers, organs, and the skin. Elastic fibers and cell nuclei are stained black, collagen fibers are stained red and other tissue elements including cytoplasm are stained yellow.
See more ideas about histology slides, anatomy and physiology and physiology. To differentiate different types of connective tissue, in a single tissue section. Elastic cartilage is histologically similar to hyaline cartilage but contains many yellow elastic fibers lying in a solid matrix. Jan 28, 2020 dense connective tissue is composed of large amounts of closely packed collagenous fibers. In dense connective tissue, which type of cell is most common. The internal elastic membrane forms a boundary between the thin tunica intima and the middle layer, the thick tunica media. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This thick, strongwalled artery has layer upon layer of elastic plates made of freely branching elastic fibers. Note that these elastic fibers are much thicker than those of loose c.
The sheets formed by this tissue occur in the walls of blood vessels, lungs, bronchioles, true vocal cords, cartilage of larynx, trachea, capsules of spleen and ligamenta flava which connect adjacent vertebrate. The extracellular substance of elastic connective tissue is composed of limited ground substance and is structured in a flexible, but firm matrix. Histology learning system connective tissue, elastic fibers. This type of tissue is particularly common in areas of the body. The areolar connective tissue is a subtype of loose connective tissue. Loose connective tissue areolar areolar connective tissue. Hyaline most common, found in the ribs, nose, larynx, trachea. The three types of dense connective tissue are dense regular, dense irregular, and elastic tissue. Here is superficial fascia showing collagen fibers. All of the above are fibers found in connective tissue.
It is thicker and stronger than loose connective tissue and forms a protective capsule layer around organs such as the liver and kidneys. The lungs and arteries have a layer of elastic connective tissue that allows the stretch and recoil of these organs. Ct7 18 loose connective tissue lamina propria of tracheal mucosa webscope imagescope loose connective tissue. May 11, 2020 loose connective tissue lct, also called areolar tissue, belongs to the category of connective tissue proper. Elastin is the protein that allows for tissue to regain its shape after being compressed or warped. As may be obvious from its name, one of the major functions of connective tissue is to connect tissues and organs. Its cellular content is highly abundant and varied. The yellow elastic connective tissue forms cords called ligaments which join bones to bones. Areolar connective tissue has similar components as dense irregular connective. This not to be mistaken for elastic cartilage which also is a connective tissue, but under the.
Elastic cartilage or yellow cartilage is a type of cartilage present in the outer ear, larynx, and epiglottis. The cells sit in a matrix made up of glycoproteins, fibrous proteins and glycosoaminoglycans, which have been secreted by the fibroblasts, and the major component of the matrix, is in fact, water. Elastic cartilage is a type of connective tissue that is found in the outer ear and epiglottis. Reproductive system and necessary life functions 32 terms.
Connective tissue ct is a one of the four main classes of tissues. Histology elastic connective tissue view related images. Elastic connective tissues consist of chondrocytes cells and are made up of elastic fibers. Elastic fibers or yellow fibers are bundles of proteins found in extracellular matrix of connective tissue and produced by fibroblasts and smooth muscle cells in arteries. The arrangement of elastic fiber bundles and loose collagenous connective tissue is more easily seen in the cross section. In comparison to loose connective tissue, dense tissue has a higher proportion of collagenous fibers to ground substance. The collagenous fibers are irregularly arranged in interwoven sheets that makes the tissue very strong. Fibrocartilage is the tough, very strong tissue found predominantly in the intervertebral disks and at the insertions of ligaments and tendons. General connective tissue is either loose, or dense, depending on the arrangement of the fibres. Identify and distinguish between the types of connective tissue. Connective tissue has viscoelastic properties, defined as two components of stretch that allow elongation of the tissue. Elastic cartilage elastic cartilage is very cellular note the abundant chondrocytes throughout this tissue. Hls connective tissue, elastic fibers med mag labeled. Areolar connective tissue definition, location, function.
This type of cartilage is typically found in their auricle of the ear and the epiglottis. In this case, instead of being labeled as loose connective tissue, areolar connective tissue would fall under this category, along with adipose fat connective tissue. Dense irregular connective tissue, which is made up of elastic fibers and a type of protein fiber called collagen, provides protection to the tissues or organs it surrounds. As fibroblasts are the most common cells in areolar tissue, the majority of the nuclei seen here are probably fibroblast nuclei.
See more ideas about anatomy and physiology, physiology and histology slides. Watch the full video about the elastic cartilage here. The endothelial cells are supported by a thin bed of subendothelial connective tissue that, in turn, rests upon a thick sheet of elastic tissue called the internal elastic membrane. It is found mainly under the skin but also in deposits between the muscles, in the intestines and in. Fibro is found in invertebral discs, joint capsules, ligaments elastic is found in the external ear, epiglottis and larynx. The three types of cartilage there are three types of cartilage. The lungs and arteries have a layer of elastic connective. It is comprised of cells and extracellular matrix, including fibers and ground substance. Elastic fibers include elastin, elaunin and oxytalan. The light purple dots you see inside the cells are an artifact of process used to make the images, and do not represent real structures.
Like to the timber framing of a house, the connective tissue provides structure and support throughout the body. Dense irregular connective tissue silver stain dense regular connective tissue dense fibrous c. You may not embed one of our images on your web page without a link back to our site. Fibroblast pale, most common cell collagenous fibers pink, in masses.