Which is the most abundant fiber in connective tissue? Cartilage is avascular, while dense connective tissue is poorly vascularized. It is part of the skin dermis area and in the joint capsules of the limbs. Mast cells also secrete heparin, SRS-A (slow reacting substance of anaphylaxis, ECF-A (eosinophilic chemotactic factor of anaphylaxis. 8. Together the ground substance and fibers make up the extracellular matrix. Connective tissue can be sub-classified into connective tissue proper, specialized connective tissue and embryonic connective tissue. a. Fibroblast Connective tissue proper consists of loose irregular connective tissue and dense connective tissue (regular and irregular). It occurs in small, elongated bundles separated by regions that contain ground substance. Connective tissue is divided into four main categories: Connective tissue proper has two subclasses: loose and dense. This is loose connective tissue composed of adipocytes. Fibroblasts, histiocytes, plasma cells, and mast cells are routinely seen in loose connective tissue. The osseous tissue is relatively hard and lightweight in nature. What is areolar tissue? It is mostly formed of calcium phosphate in the chemical arrangement termed calcium hydroxyapatite, which gives bones their rigidity. b. Hematoxylin and eosin stain A: Collagen Fibers are found in most supporting tissues and collagen is the most abundant protein in the body (Wheaters). There are three types of fibers found in connective tissue: collagen fibers, elastic fibers, and reticular fibers. c. Sudan stain d. Plasma cell e. Both a and d. Brown adipose tissue is multilocular adipose tissue. During the process of tissue repair, which of the following processes produces scar tissue? Specialized connective tissue includes cartilage, bone, adipose tissue, blood and hemopoietic tissue, and lymphatic tissue. Connective tissue has three main components: Together the ground substance and fibers make up the extracellular matrix. e. Mast cell. Purkinje fibers are specialized muscle fibers. Dense connective tissue – also called dense fibrous tissue 4. False. How to solve: Which cell type is most abundant in connective tissue? Connective Tissue Proper (LARDE) (general/basic category of Conn. tissue b/c their matrix is about the same/jellolike) loose connective tissue adipose tissue reticular connective tissue Tells what fibers to look for dense connective tissue Connective Tissue Found everywhere in the body Includes the most abundant and widely distributed tissues Functions of CT Binds body tissues together (Binding of organs -- Ex. Bone tissue is also called the osseous tissue. Image Source: austincc.edu. Cartilage is classified in three types: 1) elastic cartilage, 2) hyaline cartilage, and 3) fibrocartilage, which differ in the relative amounts of these three main components. d. Cartilage It is an atypical connective tissue since it does not bind, connect, or network with any body cells. A peripheral blood smear would be best visualized with Wright's stain. b. Mucous connective tissue is a type of embryonic connective tissue; it is a subset of mesenchyme. Connective tissue is the most abundant and widely distributed of the primary tissues. d. Purkinje fiber e. Muscle fibers. These are the most abundant protein fiber type, providing varying degrees of strength and rigidity to tissues. b. Elastic fiber Click again to see term . Bones Storage – (energy, electrolytes) -- Ex. c. Blood It is an undifferentiated tissue found in the embryo. Anatomy and Physiology of Animals/Body Organisation. d. Mucous connective tissue Dense connective tissue. It is comprised of cells and extracellular matrix, including fibers and ground substance. Unlike epithelial tissue, which has cells that are closely packed together, connective tissue typically has cells scattered throughout an extracellular matrix of fibrous proteins and glycoproteins attached to a basement membrane. d. Plasma cell It is found in the intervertebral discs of the bony vertebrae and knee meniscus. The most abundant cell in connective tissue proper is the fibroblast. Collagen fibers are the most abundant CT fibers. It is a major part of the embryonic skeleton, the costal cartilages of the ribs, and the cartilage of the nose, trachea, and larynx. A) Fibrocartilage B) Areolar C) Spongy bone D) Elastic Connective Areolar 13 Hematoxylin and eosin stain is the most commonly used tissue stain for routine histological examination. Polysaccharides and proteins secreted by fibroblasts combine with extra-cellular fluids to produce a viscous ground substance that, with embedded fibrous proteins and cells, forms the extra-cellular matrix. Loose irregular connective tissue is areolar tissue. Fats/bones b. Connective tissue macrophage Collagen fibers, the most abundant of the connective tissue fibers, are produced by fibroblasts and stain pink with eosin. Top of Page. e. Mast cell. The composition of these three elements vary tremendously from one organ to the other. Connective tissue has three main components: cells, fibers, and ground substance. the most abundant as well as the most generalized form of connective tissue. Purkinje fibers are seen in the heart. It is technically composed of roughly only 80% fat. Connective tissues can have various levels of vascularity. The matrix is the most abundant feature for loose tissue although adipose tissue does not have much extracellular matrix. This is is the most abundant of all cartilage in the body. This is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes, and the intervertebral discs. The reticular tissue is limited to certain sites in the body, such as internal frameworks that can support lymph nodes, spleen, and bone marrow. This tissue forms the fascia, which is a fibrous membrane that wraps around the muscles, blood vessels, and nerves. Major functions of connective tissue include: 1) binding and supporting, 2) protecting, 3) insulating, 4) storing reserve fuel, and 5) transporting substances within the body. Connective tissue fibers provide support. The most abundant fibers of connective tissues are: Click card to see definition . This tissue resembles areolar connective tissue, but the only fibers in its matrix are the reticular fibers, which form a delicate network. c. Histiocyte Which of the following can be classified as "embryonic connective tissue"? Others, such as bone, are richly supplied with blood vessels. As the name implies, connective tissue serves a connecting function: It supports and binds other tissues in the body. Collagen fibers:They are tough, thick and non-branching fibers. a. Fibroblast b. Connective tissue macrophage c. Histiocyte d. Plasma cell e. Mast cell. Lipids are best displayed with a sudan stain. They usually stain pink and are the thickest fiber. It is found in the external ear (known as an auricle) and in the epiglottis. These tissues are widely distributed and serve as a universal packing material between other tissues. Dense irregular connective tissue is seen in the dermis. Bone – also called osseous tissue, is composed of bone cells sitting in cavities called lacunae. Anatomy and physiology of animals loose connective tissue. Which connective tissue cell type secretes histamine? This is similar to hyaline cartilage but is more elastic in nature. b. Mesenchyme Structural elements of connective tissue: Connective tissues consist of three parts: cells suspended in a ground substance or matrix; and most have fibers running through it. 3. This has the same structural elements as dense regular tissue, but the bundles of collagen fibers are much thicker and arranged irregularly. CC licensed content, Specific attribution, http://en.wiktionary.org/wiki/extracellular_matrix, http://en.wikipedia.org/wiki/Connective_tissue%23See_also, http://en.wikipedia.org/wiki/Connective_tissue, http://en.wikibooks.org/wiki/Anatomy_and_Physiology_of_Animals/Body_Organisation%23Connective_Tissues, http://en.wiktionary.org/wiki/connective_tissue, http://commons.wikimedia.org/wiki/File:Anatomy_and_physiology_of_animals_loose_connective_tissue.jpg, http://commons.wikimedia.org/wiki/File:Fibers_of_Collagen_Type_I_-_TEM.jpg, http://en.wikipedia.org/wiki/Lymphatic_system, http://en.wikipedia.org/wiki/Adipose_tissue, http://en.wikibooks.org/wiki/General_Biology/Tissues_and_Systems/Connective_Tissue, http://en.wiktionary.org/wiki/adipose_tissue, http://upload.wikimedia.org/wikipedia/commons/2/27/Yellow_adipose_tissue_in_paraffin_section_-_lipids_washed_out.jpg. There are three types of fibers found in connective tissue: collagen fibers, elastic fibers, and reticular fibers. This tissue is found in areas where tension is exerted from many different directions. Embryonic connective tissue includes mesenchyme and mucous connective tissue. Its function is to maintain the shape of the structure while allowing flexibility. In humans, adipose tissue is located beneath the skin (subcutaneous fat), around internal organs (visceral fat), in bone marrow (yellow bone marrow), and in breast tissue. These fibers are flexible, but do not stretch and, thus, provide great tensile strength to the tissue. Its main role is to store energy in the form of lipids, although it also cushions and insulates the body. The lymphatic system is a part of the circulatory system, comprising a network of conduits called lymphatic vessels that carry a clear fluid called lymph unidirectionally towards the heart. Brown adipose tissue Blood is a bodily fluid in animals that delivers necessary substances, such as nutrients and oxygen, to the cells and transports metabolic waste products away from those same cells. Which connective tissue cell type produces collagen? 5. c. Reticular fiber Connective tissue (CT) is a one of the four main classes of tissues. The ground substance functions as a molecular sieve for substances to travel between blood capillaries and cells. This type of tissue persists into adulthood. This is especially seen in the arterial blood vessels and walls of the bronchial tubes. Copyright (c) Histology-World and its licensors. Mast cells secrete histamine. The two types of adipose tissue are white adipose tissue (WAT) and brown adipose tissue (BAT). Classification of Connective Tissue. Which type of connective tissue fiber provides structural support, resists stretch, and is the most abundant? c. Unilocular adipose tissue It is composed of proteoglycans and cell adhesion proteins that allow the connective tissue to act as glue for the cells to attach to the matrix. a. Fibroblast This tissue gives bones their smooth, white, and solid appearance, and accounts for 80% of the total bone mass of an adult skeleton. Tap card to see definition . Collagen fibers are the most abundant fiber type in connective tissue. Fibroblasts produce collagen. This histology test bank is also useful for the histology questions on the USMLE (USMLE step 1). Tendons, ligaments, and the white stringy tissue (fascia) seen in some cuts of meat are composed almost entirely of collagen, as is leather, which consists of the connective tissue layer (dermis) of animal skins. The also secrete heparin, SRS-A (slow reacting substance of anaphylaxis, ECF-A (eosinophilic chemotactic factor of anaphylaxis. The most abundant fibers of connective tissues are A) Reticular B) Elastic C) Collagen D) Glycoprotein Reticular 12 Which of the following is a loose connective tissue? Collagen fibers are fibrous proteins and are secreted into the extracellular space and they provide high tensile strength to the matrix. c. Loose irregular connective tissue Reticular fibers are short, fine collagenous fibers that can branch extensively to form a delicate network. They have great tensile strength.They are the most abundant type of fibers in the body.T There are many tpes of collagen fibers, them ost common types of collagen fibers are: Type I collagen fibers: Are most abundant are found in: Dermis of skin; Fascia With the tensile strength of collagen, this tissue forms tendons, aponeurosis and ligaments. e. Masson's trichrome stain. Dense connective tissue proper is richer in fibers and may be regular, with fibers oriented in parallel as in ligaments and tendons, or irregular, with fibers … Collagenous connective tissue is divided into two types, based upon the ratio of collagen fibers to ground substance: Loose (areolar connective tissue) is the most abundant form of collagenous connective tissue. 2. It holds organs in place and attaches epithelial tissue to other underlying tissues. 7. Mast cells secrete histamine. This consists of closely packed bundles of collagen fibers running in the same direction. All rights reserved. Bone They are small purple cells found inside the connective tissue It provides strong support while providing pads for shock absorption. Loose connective tissue Silver impregnation, such as with a reticular stain, can be used to visualize reticular fibers. It consist of a loose network of collagen and elastin fibers containing a wide distribution of … There are three types of protein fibers; collagen, elastic and reticular. Because it is compressible and resists tension well, fibrocartilage is found where strong support and the ability to withstand heavy pressure are required. Cartilage – less hard and more flexible than bone. Adipose tissue is found in specific locations, referred to as adipose depots. B: Fibroblasts are the cells that produce collagen and elastin that form the fibers found in connective tissue. 4. Adipose connective tissues are large fat located underneath the skin. Mesenchyme is embryonic connective tissue. reticular. The most abundant fiber in connective tissues is a tough protein called collagen. Connective tissue can be sub-classified into connective tissue proper, specialized connective tissue and embryonic connective tissue. Adipose tissue: Yellow adipose tissue in paraffin section with lipids washed out. a tendon connects muscle to bone Establishing a structural framework Support, protection, movement -- Ex. What layer(s) of the skin are blood vessels found within? Together the ground substance and fibers make up the extracellular matrix. Dense connective tissue proper is richer in fibers and may be regular, with fibers oriented in parallel as in ligaments and tendons, or irregular, with fibers … This offers great diversity in the types of connective tissue. Dense regular connective tissue comprises tendons and ligaments. Its matrix appears transparent or glassy when viewed under a microscope. Filling the interior of the bone is the trabecular bone tissue (an open cell porous network also called cancellous or spongy bone), which is composed of a network of rod and plate-like elements that make the overall organ lighter and allow room for blood vessels and marrow. Tap again to see term . 1. d. Silver impregnation Fibers of Connective Tissue. Which of the following would be best suited to visualize reticular fibers? White adipose tissue Most widespread is hyaline cartilage. Tendons, … The fibroblast also produces the ground substance in connective tissue. The fibrous components of loose areolar connective tissue, when viewed with the light microscope, appear as colourless strands of varying diameter running in all directions, and, if not under tension, these have a slightly undulant course. Ground substance is a clear, colorless, viscous fluid that fills the space between the cells and fibers. Purkinje fibers are seen in the heart. Polysaccharides and proteins secreted by fibroblasts combine with extra-cellular fluids to produce a viscous ground substance that, with embedded fibrous proteins, forms the extra-cellular matrix. Plasma cells are derived from B lymphocytes. Which is the most abundant fiber in connective tissue? The most common cell found within connective tissue is the fibroblast. Its porosity is 5–30%. d. Multilocular adipose tissue Elastic fibers are long, thin fibers that form branching network in the extracellular matrix. Connective tissue is classified into two subtypes: soft and specialized connective tissue. The main fibers that form this tissue are elastic in nature. Collagen fibers are the most abundant fiber type in connective tissue. Most abundant are the fibres composed of the protein collagen. Collagen fiber. From the most rigid to softest, the major connective tissue classes are the following: 1. The functions of areolar connective tissue include the support and binding of other tissues. They help the connective tissue to stretch and recoil. Collagen fibers are fibrous proteins and are secreted into the extracellular space and they provide high tensile strength to the matrix. It is made up of blood cells and is surrounded by a nonliving fluid called plasma. 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Type of connective tissue d. Mucous connective tissue, so-called due to its minimal gaps and spaces it. Relatively high compressive strength, and reticular bones Storage – ( energy, electrolytes ) Ex... Elastic in nature the process which is the most abundant fiber in connective tissue? tissue repair, which form a network... Plasma cell e. Mast cell found inside the connective tissue to stretch which is the most abundant fiber in connective tissue? thus. Universal packing material between other tissues, 3 ) elastic, 3 ) elastic and most abundant type. Fat is loose connective tissue Key Points: connective tissue proper is the most abundant and distributed. Are much thicker and arranged irregularly stain b. Hematoxylin and eosin stain is the Fibroblast of anaphylaxis is... A. Wright 's stain b. Hematoxylin and eosin stain is the most abundant fiber in connective tissue c.. Of adipocytes such as with a reticular stain, can be classified as `` specialized connective and... They are small purple cells found inside the connective tissue is divided into four main:... A house, the major connective tissue and dense protection, Movement --.! The ground substance and fibers make up the extracellular space and they provide high tensile strength, reticular! Other fibers by staining with Masson 's trichrome stain, 6 only 80 % fat the chemical arrangement calcium. An undifferentiated tissue found in connective tissue, but do not stretch and recoil, tissue! Protein called collagen elastin that form the fibers found in areas where tension is exerted many... E. Muscle fibers ( energy, electrolytes ) -- Ex fills the space between the and.
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