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Chapter 3: Cells Part I: Differentiated Cells, Composite Cells, Cell Membrane.

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Presentation on theme: "Chapter 3: Cells Part I: Differentiated Cells, Composite Cells, Cell Membrane."— Presentation transcript:

1 Chapter 3: Cells Part I: Differentiated Cells, Composite Cells, Cell Membrane

2 Cells Adult human body has __________ ______varieties of cells Cells are considered to be “_________” – different _________ and ____________

3 Cells vary in size and shape Red Blood Cell (RBC) 7.5 μm 1 micrometer (1μm) = 1 x10 -6 m) Human Egg Cell (Ovum) 140 μm Smooth Muscle Cell 20-500 μm long Nerve Cell Can be many cm in length White Blood Cell 10-12 μm

4 Composite Cell Generic Cell Three major parts 1. 2. 3.

5 Fig. 3.3

6 Cell Membrane Surrounds the outside of the cell 1. 2. Many functions 1. 2.

7 Cell Membrane Structure Phospholipids –Hydrophilic heads- “water” exposed to –Hydrophobic tails- “oil” lipid soluble substances –Ex. water soluble substances –Ex:

8 Fig. 3.6

9 Cholesterol 1. 2. Cell Membrane Structure

10 Fig. 3.7

11 Cell Membrane Structure Proteins 1.Receptor proteins- 2. Integral proteins-

12 Fig. 3.7

13 Cell Membrane Structure Proteins 3. Enzymes- 4. Cellular Adhesion Molecules (CAMS)- 5. Cell Surface Proteins -

14 Fig. 3.7

15 Intercellular Junctions Individual cells vs. groups of cells Permanently connect cell membranes of groups of cells 1. 2. 3.

16 Clinical App. 3.1: Faulty Ion Channels Ion channels 1. 2. 3. Cystic Fibrosis and Cl - Channels 1. Abnormal 2. Thick mucous A. B. C. 3. Treatment:


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