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Connective Tissue

Transcript: Classification of Connective Tissue Hyaline Cartilage--low amount of collagen gives a shiny and translucent appearance --found in support rings of respiratory tubes Fibrocartilage--strongest and most durable cartilage; serve as shock absorbers --found between vertebrae and in the knee joint Elastic Cartilage--few collagen fibers, but large numbers of very fine elastic fibers for high flexibility --found in inner ear and voice box (larynx) Cartilage Fibrous--extracellular fibers Bone--fibers and hard mineral GROUND SUBSTANCE Cartilage--fibers AND traps water to form firm gel Blood--lack of fibers Types of Cartilage Exists in liquid state= no ground substance or fibers liquid fraction: plasma formed elements: blood cells Red Blood Cells: erythrocytes (transport oxygen) White Blood Cells: leukocytes (destroy harmful microorganisms) Platelets: thrombocytes (blood clotting) --Transports nutrients, gases, and waste products; pH regulation --Formed in red marrow of bones Blood --Support --Support framework for the body as a whole & for individual organs --Connect --Connects tissues together --Muscles to muscles --Muscles to bones --Bones to bones --Transport --Blood (transports oxygen) --Defend --Against microorganisms and other invaders Fibrous Connective Tissue Functions of Connective Tissue --Consists of intercellular material called MATRIX Example: matrix of blood = plasma MATRIX can have three types of fibers: -collagenous: made of collagen and provide tensile strength -reticular: -made of a special collagen called reticulin -occur in networks and support small structures Example: nerve fibers and capillaries -elastic: made of protein called elastin (think of ELASTIC) --Found in stretchy tissues Loose Connective Tissue--connection **stretchable, most widely distributed** *Between tissues and organs* Adipose Tissue--insulation, protection, support, reserve energy **contains fat cells** *Under skin; padding at various points* Reticular Tissue--support, filtration **3D web *Forms framework of spleen, lymph nodes, and bone* Dense Fibrous Tissue--flexible/strong connection, support **bundles of fibers, flexible tensile strength *Tendons, ligaments, Dermis, Scars Bone Tissue (osseous tissue) Connective Tissue Characteristics of Connective Tissue Only one cell type present: Chondrocyte--produce tough, gristle-like ground substance Cartilage is avascular Heals slowly due to inefficient method of nutrient delivery Made of mature bone cells: osteocytes --65% is inorganic bone salt --reason for hardness of bone --Provide support and protection --Provide points of connection for muscles --Calcified matrix is a mineral reservoir Osteon: Basic structural unit of bone Lacunae: Small spaces holding osteocytes Lamellae: layers of bone matrix Canaliculi: connections; blood vessels

Connective Tissue

Transcript: Loose Areolar Adipose Reticular Dense Dense Regular Dense Irregular Elastic Blood Lymph Cartilage Hyaline Elastic Fibrocartilage Bone Osseous Tissue Abundant Collagen Fibers Inorganic Calcium Salts Rock-like Hardness Support & Protect Osteoblasts -> Osteocytes Vascular Dense Elastic Tissue B/t Hyaline Cartilage & Dense Regular Rows of Chondrocytes Rows of Thick Collagen Fibers Compressible -> Resists Tension Intervertebral Disks Spongy Cartilages of Knee Fat Tissue Stores Nutrients Insulate & Absorbs Shock Richly Vascularized Subcutaneous Fat Serves as Energy Areolar Tissue Dense Irregular Connective Tissue Reticular Tissue Blood Elastic Cartilage Fluid Connective Tissue Connective Tissue Proper Bones Fibrocartilage Lymph “Fibrous Connective Tissues” Closely Packed Bundles of Collagen Fibers Great Resistance to Tension Poorly Vascularized Tendons Muscle-to-Tissue/Muscle Ligaments Bone-to-Bone More Elastic Fibers Supporting Connective Tissue Elvin Viloria White 3 Anatomy Similar to Dense Irregular Collagenous Abundant Elastic Fibers Wall of Elastic Arteries No Connections No Mechanical Support Mesenchyme Blood Plasma is Fluid Matrix Transportation Protection Covers Ends of Long Bones Forms Epiphyseal Plate Supports Tip of Nose Connects Ribs to sternum Supports Respiratory System Large # of Collagen Fibers Nearly Identical to Hyaline cartilage More Elastin Fibers Supports External Ear Adipose Tissue Hyaline Cartilage Supports/Binds other Tissues Holds Body Fluids (Salts & Water) Defends Against Infections Store Nutrients Loose Arrangement of Fibers Ground Substance Dense Regular Collect & Transport Tissue Fluids Return Plasma Proteins to Bloodstream Build Up Effective Immunity Defence Mechanism Bundles of Ticker Collagen Fibers Withstands Tension from Many Directions Found: Dermis of Skin Joints Coversing of Some Organs Found in: Lymph Nodes Spleen Bone Marrow Framework Supports Free Blood Cells

Connective Tissue

Transcript: Connective Tissue There are many types of connective tissue. Loose Dense Fibrous Cartilage Bone "Liquid" - Blood and Lymph Intercellular Matrix is the material located outside the cell. It fills the space between the cells. Protein fibers are found in the matrix. Loose connective tissue contains fibers that about loosely arranged around the cells. There are 3 types of loose connective tissue. Areolar Adipose Reticular Areolar tissue protects the organs and holds them in position. Adipose tissue stores fat under the skin. Reticular tissue forms the internal framework for lymphoid tissue. Dense fibrous connective tissue is composed of an intercellular matrix that contains many collagen and elastic fibers. A tendon is a dense fibrous connective tissue that attaches muscle to the bone. A ligament is a dense fibrous connective tissue that attaches the bone to the bone. Fascia are bands or sheets of tissue. Fascia covers muscles, blood vessels, and nerves. Cartilage is formed by chondrocytes or cartilage cells. Chondrocytes secrete protein. Perichondrium is a the layer that covers most cartilage. This layer carries blood vessels to the cartilage. Bone tissue is called osseous. They secrete an intercellular matrix that includes collagen, calcium salts, and other minerals. Blood and Lymph are 2 types of "liquid" connective tissue. They have a watery intercellular matrix. Connective tissue is found in the blood, under the skin, in bone, and around many organs. It binds together the parts of the body and provides support, protection, fat storage, and transport of substances.

connective tissue

Transcript: connective tissue proper connective tissue proper connective proper tissue Fluid connective tissues hyaline cartilage functions to reduce friction at joints, movement, growth and strength,Hyaline cartilage occurs in the trachea, the larynx, the tip of the nose,and in the connection between the ribs and the breastbone and the ends of bone where they form joints. dense regular are fibers that are packed closely.Binds bones together and also attach muscles to the bones. Connective Tissue contained in lymphatic system functions to drain interstital fluid, transporting lipids,and protecting the body from infections. dense irregular is made up of elastic fibers and a protein fiber called collagen which provide protection to the tissue and/ or organ it surrounds supporting connective tissues fibrocartilage provides and gives support to attach surrounding structures. strongest cartilage . dense- elastic tissue allows fibers of this tissue to provide elasticity. loose- adipose tissue function as the major storage site for fat in form of triglycerides connective tissue proper elastic cartilage gives support and the ability of flexibility especially in the ear. loose-areolar tissue binds/ joins skin to the muscle beneath. connective tissue proper loose- reticular tissue provide support to organs, tissues and individual cells like adipose tissues supporting connective tissues supporting connective tissues blood functions in bringing nutrients and oxygen to tissues, removing waste, transporting large number of products including hormones, and maintaining homeostasis bone is a type of mineralized tissue that contains collagen and calcium abilities to protect and support.also storage of minerals and chemical energy,and the production of blood cells. fluid connective tissues connective tissue proper supporting connective tisses

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