Lecture 2 Sep-6-2011 chapter 3

Lecture 2 Sep-6-2011 chapter 3 - io - 2870 ntroduction to...

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Unformatted text preview: io - 2870 ntroduction to Anatomy and Physiology Chapter 3 The Cellular Level Of Organization Bio-2870 A & P 2 The Cellular Level Of Organization 9/6/2011 Cell Theory Developed from Robert Hooke’s research Cells are the building blocks of all plants and animals All cells come from the division of preexisting cells The smallest units that perform all vital physiological functions Each cell maintains homeostasis at the cellular level Sex cells (germ cells) Reproductive cells : Male sperm and Female oocyte (a cell that develops into an egg) Somatic cells ( soma = body) All body cells except sex cells Bio-2870 A & P 3 The Cellular Level Of Organization 9/6/2011 Bio-2870 A & P 4 The Cellular Level Of Organization 9/6/2011 Plasma Membrane Functions Isolation; protection; sensitivity; support; controls entry and exit of materials = Plasma membrane = Nonmembranous organelles = Membranous organelles Lipid bilayer containing phospholipids, steroids, proteins, and carbohydrates Cytosol (distributes materials by diffusion) 3-1 THE CELL MEMBRANE MEMBRANE LIPIDS 98% of the plasma membrane is composed of lipids 75% of these lipids are phospholipids; amphipathic molecules 20% of these lipids are cholesterol molecules 5% of these lipids are glycolipids; the extracellular glycocalyx nonpolar FA tails polar head group + + Bio-2870 A & P 5 The Cellular Level Of Organization 9/6/2011 Bio-2870 A & P 6 The Cellular Level Of Organization 9/6/2011 THE CELL MEMBRANE MEMBRANE PROTEINS Bio-2870 A & P 7 The Cellular Level Of Organization 9/6/2011 3-1 THE CELL MEMBRANE II. MEMBRANE PROTEINS Bio-2870 A & P 8 The Cellular Level Of Organization 9/6/2011 3-1 THE CELL MEMBRANE II. MEMBRANE CARBOHYDRATES : GLYCOCALYX A) Lubrication & Protection B) Anchoring & Locomotion Bio-2870 A & P 9 The Cellular Level Of Organization 9/6/2011 II. MEMBRANE CARBOHYDRATES C. Specificity and binding i.e HIV (gp120 Glycoproteins) CD4 Receptors Bio-2870 A & P 10 The Cellular Level Of Organization 9/6/2011 Bio-2870 A & P 11 The Cellular Level Of Organization 9/6/2011 Blood Typing Blood Types and Cross-Reactions Blood Plasma Antibodies Type A : Type B antibodies Type B : Type A antibodies Type O : Both A and B antibodies Type AB : Neither A nor B antibodies C. Recognition i.e. blood antigens I. CYTOPLASM A. CYTOSOL Intra Cellular Fluid B. ORGANELLES membranous and Non-membranous 3-2 Organelles In The Cytoplasm Bio-2870 A & P 12 The Cellular Level Of Organization 9/6/2011 i. CYTOSKELETON Proteins organized in fine filaments or slender tubes a. Microfilaments...
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This note was uploaded on 12/14/2011 for the course BIO 2870 taught by Professor Spranger during the Spring '08 term at Wayne State University.

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Lecture 2 Sep-6-2011 chapter 3 - io - 2870 ntroduction to...

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