bio 8 sect1 - No matrix in epithelial tissue Connective...

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Bundle – collection of individual muscle fibers Tropomyosin Calcium Ion Troponin Actin MYASIN Actin Top Sweet Sour Salt Bitter Membrane Ring January 23, 2008 No matrix in epithelial tissue Connective tissue – has cells scattered in a matrix Matrix- intercellular substance – consists of protein fibers in a ground substance Types of connective tissue Fibroblasts – immune system Macrophages – “eats” things immune system Plasma cells - make anti-bodies Mast cells – immune system Adipocytes – fat tissue Leukocytes – white blood cells Types of protein fibers Collagen fibers Elastic fibers Reticular fibers Collagen molecule – quaternary molecule Functions of connective tissue Structural Thermal – adipose (fat) Transport – blood Energy storage Structural roles of connective tissue Support – bones Attachment – tendons Compartmentalization – fascia Types of Connective Tissue Embryonic Mature Embryonic Connective Tissue Mesenchyme Mucous Mature Connective Tissue Loose Dense Cartilage
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Bone Blood Lymph Loose Connective Tissue Areolar – dermis Adipose – fat, layer Reticular – liver, spleen, lymph nodes, blood vessels Dense Connective Tissue Dense regular – ligaments and tendons Dense irregular – dermis, bone surrounding, cartilage Elastic – lungs, trachea, bronchi, arteries, vocal folds Types of Cartilage hyaline – joints, cartilage fibro cartilage – pubic, symphysis elastic cartilage – epiglottis, articulae and Eustachian tube Bone compact/ cortical – outermost spongy bone –inner most diploe trabecular medullary cancellous January 28, 2008 Osteology- study of bones Hyaline cartilage precedes bone in development. Epiphyseal growth plate – hyaline cartilage Diaphysis –bone shaft Epiphysis – located one at the top and one at the bottom Metaphysis – where diaphysis meets epiphysis Between the ages of 18-21, the growth plates are sealed. Periosteum - around the bone, anchors nerves and blood vessels, connective tissue Osteoblasts - lay down matrix for oteocytes to create a bone. Thicken bones and work from the outside in Endostem - same as periosteum only inside the bone, work inside out. Osteoclast- phagocytic – increase calcium levels in blood system. Hydroxyapatite – calcium phosphate Osteoprogenitor cell – stem cell Perforating (Volkmann’s Canals) – allows vessels and nerves through – penetrates the bone completely Haversian Canals – internal canals within bones
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Membrane (dermal) bone – intramembranous ossification – no cartilage precursor, produce ossification within a membrane, secretes bone matrix, creates flat bones, creation of joints. Axial skeleton
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This note was uploaded on 04/07/2008 for the course BIO 008 taught by Professor Hetch during the Spring '08 term at Long Island U..

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bio 8 sect1 - No matrix in epithelial tissue Connective...

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