Dense Connective Tissue. Select a subject to preview related courses: The proportions of these two fibers vary based on the elastic needs of the location where dense regular connective tissue is found. Dense regular connective tissue provides connection between different tissues in the human body. Figure 4.7. Erythrocytes, red blood cells, transport oxygen and some carbon dioxide. The dense connective tissue is a type of connective tissue proper that consists predominantly of fibers, especially type I collagen. It derives its name from the Latin reticulus, which means “little net.”. a. succeed. http://cnx.org/contents/14fb4ad7-39a1-4eee-ab6e-3ef2482e3e22@7.1@7.1. In dense irregular connective tissue, the direction of fibers is random. Dense regular connective tissue is composed of three main components: fiber producing cells, fibers, and an extracellular fluid matrix. Can you name the 10 tissue types shown in the histology slides? The knee and jaw joints and the the intervertebral discs are examples of fibrocartilage. They are somewhat less flexible than loose connective tissue. Reticular cells produce the reticular fibers that form the network onto which other cells attach. Anyone can earn The three main types of cartilage tissue are hyaline cartilage, fibrocartilage, and elastic cartilage (Figure 4.11). Create your account. The proteoglycan attracts and traps available moisture forming the clear, viscous, colorless matrix you now know as ground substance. Specialized cells in connective tissue defend the body from microorganisms that enter the body. Did you know… We have over 220 college This is a loose connective tissue widely spread throughout the body. Like all connective tissue, dense regular connective tissue is composed of cells, in this case fibroblast cells (fiber producing cells), fibers (elastin and collagen), as well as a jelly-like extracellular matrix called ground substance. study Transport of fluid, nutrients, waste, and chemical messengers is ensured by specialized fluid connective tissues, such as blood and lymph. The most common cell found within connective tissue is the fibroblast. Dense regular connective tissue fibers are parallel to each other, enhancing tensile strength and resistance to stretching in the direction of the fiber orientations. This ground substance is usually a fluid (water), but it can also be mineralized and solid, as in bones. As a member, you'll also get unlimited access to over 83,000 The major function of the dense connective tissue is to bind body parts together. Bone is a highly vascularized tissue. They are found throughout the body, but are most abundant in the reticular tissue of soft organs, such as liver and spleen, where they anchor and provide structural support to the parenchyma (the functional cells, blood vessels, and nerves of the organ). - Function, Types & Structure, Compact Bone: Definition, Structure & Function, Alveolar vs. Tubular Glands: Definition, Shapes & Examples, Middle School Life Science: Help and Review, UExcel Anatomy & Physiology: Study Guide & Test Prep, Middle School Life Science: Tutoring Solution, Holt McDougal Modern Biology: Online Textbook Help, Prentice Hall Conceptual Physics: Online Textbook Help, CSET Science Subtest II Chemistry (218): Practice & Study Guide, College Chemistry: Homework Help Resource, Glencoe Chemistry - Matter And Change: Online Textbook Help, ILTS Health Education (211): Test Practice and Study Guide, High School Physical Science: Tutoring Solution. Why are tendons and ligaments tissues difficult to heal? A layer of dense irregular connective tissue, the perichondrium, encapsulates the cartilage. It could be classified into two sub types of connective tissues namely; dense regular white fibrous connective tissue and dense regular yellow fibrous connective tissue. Platelets are cell fragments involved in blood clotting. Two major components of the matrix are ground substance and protein fibers. Dense regular connective tissue gets its name from its densely packed collagen fibers that fit snugly together in a regular and consistent undulating pattern. The collagen fibers in dense regular connective tissue are bundled in a parallel fashion. A large number of capillaries allow rapid storage and mobilization of lipid molecules. Physical support b. Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. c) Nervous tissue. DRCT has a very poor blood supply, which is why damaged tendons and ligaments are slow to heal. Compared with the loose connective tissue, the dense connective tissue has less cellular variation and ground substance. The matrix usually includes a large amount of extracellular material produced by the connective tissue cells that are embedded within it. Plus, get practice tests, quizzes, and personalized coaching to help you This tissue gives rigid support as well as elasticity. Therefore, connective tissue with densely packed fibers, like dense regular connective tissue, has much less ground substance than those with loosely packed fibers. Areolar tissue shows little specialization. Adipose cells store surplus energy in the form of fat and contribute to the thermal insulation of the body. Which of the following is the term for the tissue that functions to support, bind, or attach other tissues or organs? Secreted by fibroblasts, ground substance is made of water, polysaccharides, specifically hyaluronic acid, and proteins. imaginable degree, area of All of these fiber types are embedded in ground substance. These fibrous tissues form your tendons, ligaments, and fibrous membrane coverings. Collagen fibers are one of two types of fibers that compose the majority of the tissue. Dense regular connective tissue is composed of collagen fibers that are arranged parallel in the form of a bundle. just create an account. All connective tissue has an extracellular matrix of proteins, water, and carbohydrate molecules that forms something called ground substance. Collagen fiber is made from fibrous protein subunits linked together to form a long and straight fiber. It contains all the cell types and fibers previously described and is distributed in a random, web-like fashion. Dense connective tissue contains more collagen fibers than does loose connective tissue. Under the microscope, tissue samples appear clear. It contains all three types of fibers (collagen, elastin, and reticular) with much ground substance and fibroblasts. In the dense connective tissue, fibroblast cells and fibres are compactly packed. Log in or sign up to add this lesson to a Custom Course. These combine to form a proteoglycan with a protein core and polysaccharide branches. Bone’s rigid extracellular matrix contains mostly collagen fibers embedded in a mineralized ground substance containing hydroxyapatite, a form of calcium phosphate. It is lighter than compact bone and found in the interior of some bones and at the end of long bones. b) Dense regular connective tissue. Elastin fibers work like elastic bands. Categories of connective tissue include the following: Loose connective tissue is found between many organs where it acts both to absorb shock and bind tissues together. Working Scholars® Bringing Tuition-Free College to the Community, Loose (which are 'loosely' packed tissues that appear to have spaces). Without collagen, bones would be brittle and shatter easily. There are two types of dense regular connective tissue: white connective tissue (also known as dense collagen connective tissue) and yellow connective tissue (or dense elastin connective tissue), which get their names due to their color, which is also a product of their relative proportions of collagen and elastin fibers. Lymph contains a liquid matrix and white blood cells. All rights reserved. A plate of hyaline cartilage at the ends of bone allows continued growth until adulthood. | {{course.flashcardSetCount}} Sciences, Culinary Arts and Personal Unlike cartilage, bone tissue can recover from injuries in a relatively short time. Dense connective tissue, also called dense fibrous tissue, is a type of connective tissue with fibers as its main matrix element. You can test out of the Adipose tissue consists mostly of fat storage cells called adipocytes that store lipids as droplets that fill most of the cytoplasm (figure 4.6). Earn Transferable Credit & Get your Degree, Pseudostratified Columnar Epithelium: Location & Function, Simple Cuboidal Epithelium: Location, Structure & Function, Adipose Tissue and Loose Connective Tissue: Functions and Structures, Adipose Tissue: Function, Location & Definition, Functions of Transitional Epithelium Tissue, Nervous Tissue: Definition, Function & Types, Connective Tissue: Types, Functions & Disorders, Basement Membrane: Function, Definition & Structure, Fibrous Connective Tissue: Function & Types, What Is Epithelial Tissue? Now, the amount of ground substance that each type of connective tissue has varies based on the amount of space that needs to be filled between the fibers. What is Glutamine? In sheath arrangement collagen bundles and matrix are distributed in irregular patterns, sometimes in the form of a network. The tissue can actually be stretched to 150% of its original length and still bounce back to its original shape, just like a rubber band. They are much thinner than collagen fibers, and they allow a higher degree of stretch than collagen alone. - Structure, Uses & Benefits, Quiz & Worksheet - Dense Regular Connective Tissue, Over 83,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Middle School Life Science: Homework Help Resource, Biological and Biomedical

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