C omponents of cytoskeleton 2)Intermediate filaments INtermediate filaments are twisted protein strands slightly thicker than microfilaments; they form much of the supporting framework in many types of cells
ahmad ata 6 Components of cytoskeleton: 2) Intermediate filaments ❑Intermediate filaments are twisted protein strands slightly thicker than microfilaments; they form much of the supporting framework in many types of cells
Components of cytoskeleton 3)Microtubules 口 Microtubules 口 Shape the cell u Guide movement of organelles(their function is to move things around in the cell) UHelp separate the chromosome copies in dividing cells
ahmad ata 7 Components of cytoskeleton: 3) Microtubules ❑Microtubules ❑Shape the cell ❑Guide movement of organelles (their function is to move things around in the cell) ❑Help separate the chromosome copies in dividing cells
Components of cytoskeleton 4)Microtubules CEntrosomes and Centrioles 口 The centrosome DAn area of the cytoplasm near the nucleus that coordinates the building and breaking of microtubules in the cell dIts considered to be a" microtubule-organizing center pLays an important role during cell division cOntains a pair of centrioles
ahmad ata 8 Components of cytoskeleton: 4) Microtubules ❑Centrosomes and Centrioles ❑The centrosome ❑An area of the cytoplasm near the nucleus that coordinates the building and breaking of microtubules in the cell ❑Its considered to be a “microtubule-organizing center” ❑Plays an important role during cell division ❑Contains a pair of centrioles
Components of cytoskeleton Centriole Structure Centrioles a Self-replicating a Made of bundles of Figure 1 microtubules Triplet Microtubules elp in organizing cel‖ division
ahmad ata 9 Components of cytoskeleton: Centrioles ◼ Self-replicating ◼ Made of bundles of microtubules. ◼ Help in organizing cell division
Cell membrane surface modifications 1. Cilia/ Cilium a. short, hair-like cellular extensions(eyelashes b. help move substances through passageways c. located in lining of respiratory tract fallopian tube 2. Flagella a. tail-like projection b. only one per cell in humans c. aids in cell locomotion d. sperm cell 3. Microvill a small finger-like extensions of the external surface of the cell membrane b. Function= to increase surface area ocated in the lining of the digestive trac
ahmad ata 10 Cell Membrane Surface Modifications 1. Cilia / Cilium a. short, hair-like cellular extensions (eyelashes); b. help move substances through passageways; c. located in lining of respiratory tract & fallopian tube. 2. Flagella a. tail-like projection; b. only one per cell in humans; c. aids in cell locomotion; d. sperm cell. 3. Microvilli: a. small finger-like extensions of the external surface of the cell membrane; b. Function = to increase surface area. c. located in the lining of the digestive tract