BIOL 2160 Chapter : Chapter 4 Tissues
Document Summary
Tissues group of cells with a common embryonic origin that function together to carry out specialized activities. Pathologist- laboratory studies of cells and tissue for diagnoses. Epithelial -covers body surfaces, lines hollow organs, body cavities, duct. Muscular-generates the force needed to make body structures move. Nervous-detect changes in body ,responds by generating nerve impulses. Location: epithelial tissues of stomach, intestines, urinary bladder. Function: resist separation of cells during contractile activities. Location: inside of the plasma membrane attached to both membrane proteins and microfilaments of the cytoskeleton. * plaque and transmembrane proteins that extend into the intercellular space to attach adjacent cells together. * desmosome plaque attaches to intermediate filaments that contain protein keratin. *prevent cardiac muscles cells from pulling apart during contraction. *transmembrane proteins attach to intermediate filaments and a protein present in the basement membrane. *connect neighboring cells by connexons (tiny fluid- filled tunnels)
