Chapter 4 Tissue: The Living Fabric 4.1 What are tissues? * Groups of cells that are similar in structure and perform a common or related function * There are four basic types of tissues: 1) Epithelial (covering) 2) Connective (support) 3) Muscle (movement) 4) Nervous (communication and control) * The study of tissues is known as histology 4.2 Preparing Human Tissue for Microscopy Requirements * Specimen must be fixed (preserved) * Specimen must be
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The collection and use of human tissue samples‚ from the deceased or living‚ is a practice doctors and surgeons perform to be able to undergo research on diseases‚ cancers‚ and the functionality of tissues in the human body. While there are many issues surrounding the use of human cells and tissues in scientific research‚ the main problem pertains to morality and subsequently ownership and consent. Laws today state that patients must give consent to donate tissue samples to doctors for this procedure
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Tissue Engineering: The Future of Surgery and Medicine The only thing worse than needing an organ? transplant is the waiting list. The average wait time for a heart transplant is four months and the wait time for a kidney extends to around five years. This issue is being addressed by scientist with the intention of changing the future. Tissue engineering is on the verge of becoming one of the most vital resources in medicine; it has a growing importance in organ and cartilage replacement and is
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Stratified Squamous Epithelium (left side) Flat epithelial tissues which are flat and have more than one layer. The Skin for a barrier. Your skin‚ for example‚ is a formidable barrier against many things. Skin is created when the basal cells in skin are dividing by the process of mitosis and‚ as division takes place‚ the cells get pushed upwards. As a result‚ the newer cells tend to stay near the bottom of the epithelial tissue‚ and the older cells get pushed upward and eventually are
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Plant Tissues A mature vascular plant (any plant other than mosses and liverworts)‚ contains several types of differentiated cells. These are grouped together in tissues. Some tissues contain only one type of cell. Some consist of several. Meristematic The main function of meristematic tissue is mitosis. The cells are small‚ thin-walled‚ with no central vacuole and no specialized features. Meristematic tissue is located in • the apical meristems at the growing points of roots and stems. • the
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developed high yielding varieties‚ which are available in small quantities. * Tissue culture is valuable for the propagation of several plant species. * Hussey described a procedure for the induction of plantlets directly on stem tissue without callus from several species of bulb and corm-bearing plants on media which is having low concentration of auxins or no auxins. * Nadgaudaetal have described tissue culture method for obtaining plantlets from 2 high-yielding turmeric varieties. The
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Enzymes in Living Tissues Purpose: The purpose of the lab was to analyze the enzymes in living tissues‚ represented by the pieces of liver. Also‚ hydrogen peroxide was used to demonstrate these effects. Storyboard: Materials: 2 50 mL beakers 10 mL graduated cylinder 3% hydrogen peroxide solution Hot water bath Lemon juice or HCl Fresh liver Forceps Procedure: Measure 10 mL of hydrogen peroxide and record its temperature. Pick the liver up with the forceps and
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What is primary tissue culture? Several different types of culture are routinely performed. The Classification of tissue cultures is based on the origin of the cells; which can roughly be divided into "primary culture" and "culture of established cell lines." Primary tissue culture can consist of the culture of a complex organ or tissue slice‚ a defined mixture of cells‚ or highly purified cells isolated directly from the organism. Compared to a cell line using primary culture has the advantages
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Chemistry102 5/7/2013 Lecture Presentation Chapter 17 Additional Aspects of Aqueous Equilibria John D. Bookstaver St. Charles Community College Cottleville‚ MO © 2012 Pearson Education‚ Inc. Common Ion Effect HA(aq) + H2O(l) ⇔ A−(aq) + H3O+(aq) • Adding a salt containing the anion NaA‚ which • is the conjugate base of the acid (the common ion)‚ shifts the position of equilibrium to the left This causes the pH to be higher than the pH of the acid solution 9lowering the H3O+ ion concentration
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The State of the Art of Tissue Engineering – Bone Content 1. Introduction………………………………………………….……………………………………………3 2. Bone Grafts and Bone Graft Substitutes…….……………………………………………4 3. Bone Biology……………………………………………………………………………………………..4 4. Tissue engineering…………………………………………………………………………………..5 4.1. Ideal Scaffold 4.2. Growth factors 4.3. Stem cells 5. Future remarks/Conclusion………………………………………………………………………7 6. Appendix…………………………………………………………………………………………………..8 1. Introductions
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