UWL ESS 205 - Histology (2 pages)

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Histology



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Histology

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It is the study of tissues and the four kinds of epithelial tissues. Note their function, location, and shape.


Lecture number:
5
Pages:
2
Type:
Lecture Note
School:
University of Wisconsin-La Crosse
Course:
Ess 205 - Human Anatomy and Physiology for Exercise Science I

Unformatted text preview:

ESS 205 Anatomy and Physiology Lecture 5 Outline of Last Lecture I Permeability of Plasma Membrane a Two classifications II Passive Transport III Active Transport IV Carrier Mediated V Non Carrier Mediated Outline of Current Lecture VI The study of tissues VII Features of tissue classes VIII Types of tissue sections planes IX Epithelial Tissues a 4 Simple Classes of Epithelial tissues Current Lecture 1 The human has over 200 different cell types There are four primary tissue classes which are epithelial connective muscular and nervous In this lecture Epithelial is the only class covered The study of tissues and how they form organs is called Histology An organ is composed of two or more tissue classes 2 Tissues are a group of similar cells cell products and a matrix Tissues actually arose from the same region as embryos although most have a hard time relating the two The differences between tissue classes are the types and functions the characteristics of the matrix and the amount of space occupied by the cell vs the matrix The matrix is the extracellular material outside the cell 3 A longitudinal section of tissues is where the tissues is cut along the longest direction of the organ A cross section is cutting the tissue perpendicular to the length of the organ An oblique section is cutting the tissue at an angle between the longitudinal and cross sections 4 Epithelial tissues are skin tissues There are one or more layers that adhere closely to other epithelial cells It forms a flat sheet where there is no room for blood vessels Because of this the connective tissues underneath provide the blood flow for the 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 5 6 7 8 9 epithelial tissues Epithelial tissues sit on the basement membrane the basal surface of cells This basement membrane has a thin layer of collagen and adhesive proteins that anchor the epithelial tissue



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