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Ch2: The Cell

Ch2: The Cell. DOWNLOAD THIS SLIDE. For more slides click here. Key Points:. Structure (and importance) of cell membrane Structure (and function) of organelles Interconnections between cells to maintain structural stability in body tissues. Anatomy of a typical cell. Cell membrane

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Ch2: The Cell

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  1. Ch2: The Cell DOWNLOAD THIS SLIDE For more slides click here

  2. Key Points: • Structure (and importance) of cell membrane • Structure (and function) of organelles • Interconnections between cellsto maintain structural stability in body tissues.

  3. Anatomy of a typical cell • Cell membrane • Cytoplasm non-membranous organelles cytosol membranous organelles

  4. What else is also part of the cell membrane ?

  5. Cell membrane (plasma membrane, plasmalemma)

  6. Non-membranous Organelles • Cytoskeleton • Microvilli • Cilia, centrioles, flagellum • Ribosomes

  7. Cytoskeleton • 4 major components: • Microfilaments (mostly actin) • Intermediate filaments • Thick filaments (composed of myosin subunits) • Microtubules (composed of tubulin subunits) • Fu: support & movement of cellular structures & materials

  8. 2 centrioles direct formation of mitotic spindle In 9+0 array

  9. Cilium - Cilia In 9+2 array Compare to microvilli and flagellum

  10. Ribosomes 60% RNA + 40% ________ workbench for __________ Fixed vs, free ribosomes

  11. Membranous Organelles Names and functions ?

  12. Nucleus

  13. Mitochondrion / -a

  14. smooth & rough ER Chambers = cysternae Function: Synthesis  Storage  Transport

  15. Golgi Apparatus Packaging and shipping of proteins Cell membrane renewal vesicles come from ?

  16. Lysosomes

  17. channel proteins (connexons) interlock and form pores abundant in cardiac and smooth muscle Intercellular Attachments 1) Gap Junctions

  18. Interlocking membrane proteins Found near surface of cells lining the digestive tract. Explain! 2) Tight Junctions

  19. Proteoglycan layer reinforced by transmembrane proteins (cell adhesion molecules or CAMs) Belt, button and hemidesmosomes Found in superficial layers of skin 3) Desmosomes

  20. The End

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