UGA CBIO 2200 - The Integumentary System (5 pages)

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The Integumentary System



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The Integumentary System

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Finishing chapter 5 as well as starting chapter 6 on the integumentary system


Lecture number:
8
Pages:
5
Type:
Lecture Note
School:
University of Georgia
Course:
Cbio 2200 - Anat & Physiol I
Edition:
1

Unformatted text preview:

CBIO 2200 1nd Edition Lecture 8 Outline of Last Lecture I Classes of Epithelium and Cell Shape II Simple Epithelia III Stratified Epithelia IV Connective Tissue Functions V Adipose Tissue VI Cartilage Outline of Current Lecture I Tissue Growth II Tissue Development III Stem Cells IV Tissue Repair V Tissue Shrinkage Atrophy and Death VI Programmed Tissue Death VII Tissue Engineering Chapter 6 I Integumentary System II Functions of skin III The Skin and Subcutaneous Tissue These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute IV Layers of Epidermis Current Lecture I II III IV Tissue Growth a Increasing the number of cells or the existing cells grow larger b Hyperplasia increase in cell number c Hypertrophy enlargement of the cells that are already there d Neoplasia development of a tumor neoplasm i Benign don t grow or grow slowly ii Malignant bad tumors metastatic cancer when cancer cells break off from primary tumor and start growing somewhere else Tissue Development a Differentiation undergo changes within certain limits b Cells don t become specific types until some time during fetus development almost never change cell type once they are specified c Metaplasia i Changing from one type of mature tissue to another ii Ex pseudo stratified column epithelium stratified squamous epithelium 1 Seen when there is exposure to some sort of environmental hazard 2 Does not occur under natural normal circumstances Stem Cells a Stem cells undifferentiated cells hasn t become a certain type yet b Embryonic stem cells i Totipotent all powerful have potential to become any type of cell ii Pluripotent appear once you get to blastocyst stage can become many things but are slightly more specific than totipotent c Adult stem cells i Undifferentiated cells in tissues of adults 1 Some are multi potent in bone marrow and can become whatever it needs to 2 But most are uni potent e g in



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