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Unit 3 Seminar

Unit 3 Seminar. Cells and Tissues Amy J. Hilbelink, Ph.D. The 3 main parts of a cell. Plasma membrane Phospholipid framework Cytoplasm Table 3-1, list of organelles Nucleus Controls cell reproduction (mitosis). What is the function of the cell membrane?. Structure of plasma membrane.

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Unit 3 Seminar

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  1. Unit 3 Seminar Cells and Tissues Amy J. Hilbelink, Ph.D.

  2. The 3 main parts of a cell • Plasma membrane • Phospholipid framework • Cytoplasm • Table 3-1, list of organelles • Nucleus • Controls cell reproduction (mitosis)

  3. What is the function of the cell membrane? Structure of plasma membrane

  4. Organelles – how did you do? • Ribosomes = protein synthesis • ER = smooth (synthesizes lipids); rough (transports proteins). • Golgi = processes and packages from ER • Mitochondria = powerhouse • Lysosome = digestive system • Centrioles= cell reproduction • Cilia= move substances along surface • Nucleus= dictates protein synthesis • Nucleolus = formation of ribosomes

  5. A question? • Do substances get through a cell membrane?

  6. Let’s discuss how! • Passive transport processes • Active transport processes

  7. Primary passive transport • Diffusion- dissolving tablet • Osmosis – water movement from higher volume to lower via semi-permeable membrane (dialysis) • Filtration – hydrostatic pressure (down a gradient) • None requires ATP energy!

  8. What is this an example of ?

  9. What is this an example of ?

  10. What is this an example of ?

  11. Active transport • Ion pumps = lower to higher concentration (up a concentration gradient) with ATP • Phagocytosis= “to eat” ;cell membrane forms pocket with ATP • Pinocytosis = “drink” ;similar to phagocytosis, but a pocket of protoplasm forms around material then pinches off inside cell, with ATP

  12. Any questions” • Active vs. Passive transport?

  13. Cell Reproduction and heredity • All human cells that reproduce, do so by a process called_________?

  14. Stages of mitosis interphase prophase metaphase anaphase telophase Two identical cells www.bbc.co.uk/schools

  15. 4 major types of tissues • Epithelial • Connective • Muscular • Nervous

  16. Epithelial cell shapes

  17. What is the function? • Simple squamous epithelium Webanatomy.net

  18. What is the function? Webanatomy.net

  19. What is the function? Webanatomy.net

  20. A question? • What is the most abundant tissue in the body?

  21. Answer • Connective tissue ! Table 3-8. • Areolar connective tissue • Adipose or fat • Fibrous connective tissue • Bone • Cartilage • Blood • Hematopoietic tissue

  22. Muscle Tissue • What are examples of each type? • Are they voluntary or involuntary? • Skeletal • Cardiac • Smooth

  23. Muscle Tissue • These are examples of each? • Skeletal • Voluntary, and attached to bone • Cardiac • Involuntary, and make up walls of heart • Smooth • Involuntary, and found in digestive tract, blood vessels and respiratory system.

  24. What type of muscle tissue?

  25. What type of muscle tissue?

  26. What type of muscle tissue?

  27. Nervous Tissue • Function = communication • Structures • Nerve cells = neurons • Glia = supporting cells • Cell body = made of axon and dendrites

  28. Nervous Tissue Suny.edu/faculty/MichaelGregory

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