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Anatomy 1/29-

f-m-w lectures

Cell Theory all living things are composed of cells and new cells arise from pre-existing cells
cell size 10-15 micro meters
cytoplasam surrounded by cell membrane, all material between nucleus and cell surface
cytoplasm contains fibers and cytosol
all cells have... plasam membrane, cytoplasm, cytoskeleton, and organelles
fluid mosaic theory way of describing the plasam membrane where protien molecules have a changing patern in the fluid phospholipid bilayer.
increases the membrane's stiffness cholesterol
membrane protiens protiens imbended in the plasma membrane that may or may not pass through entirely (intergral or peripheral)
channel protiens create pores in membrane for passive transfer
carriers involved in active binding and transport of substance across membrane
motor molecules allow cellular movement
cell indentity markers glycoprotiens are recognized by body in tissue transplants
cell adhesion molecules necessary for normal groth in most cells
microvilli, cilia, flagella extensions of the cell membrane
cilia move objects over surface of cell (7-10um)
flagella moves entire cell through fluid (20-200um)
Microvilli smallest* increase surface are of cell membrane to increase absorption. *do NOT move
Organelles carry out specialized metabolic tasks
Nucleus site of DNA/RNA synthesis
Endoplasmic Reticulum Synthesize lipids
Golgi Complex synthesize carbohydrates
Exo outward
Endo inward
Mitochondria systheize ATP
Ribosomes synthesize protien *inside the walls of the Enoplasmic Reticulum
Veslce bubble of plasma mebrane
Lysosomes vesicles of membrane containing hydolytic digestive enzymes. produced by Golgi Complex
2 things that have a double phospolipid bilayer Mitochondria and nucleous
Centrioles short cylinders of 9 groups of 3 microtubles that assist cell division
Cytoskeleton helps to mainitain cell shape *formed from filamentous protien stuctures
Cytoskeleton includes ___ + ____ microtubules and actin filaments
Diffusion the random movement of molecules from an area of high concentration to an area of low concentration, until equal distribution is attained.
Created by: melissanoach