HISTOLOGY lab report

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HISTOLOGY

PURPOSE:
The purpose of this exercise is to be able to identify and correctly name the major tissue types in the body, as well as identifying the subcatergories of tissue types while observing them through the microscope and diagrams, and be able to explain the location and function of the tissue types in the body.
There are not any real safety concerns for this lab other than making sure correct use and care of the microscope is used.
EXERCISE 1: EPITHEILIAL TISSUE
Epithelial Tissue Observations
Tissue Type
Observations
Simple Squamous
Single layer of cells, flat in appearance
Simple Cuboidal
Cells appear to be squarelike, nuclei are in the middle of each cell, basement membrane, connective tissues
Simple Columnar (stomach)
Tall (like a column), elongated nuclei, there are gastric pits visible, basement membrane, microvilli, connective tissue
Simple Columnar (duodenum)
Columnar in appearance, microvilli are present as well as Brunner’s glands
Stratified Squamous (non-keratinized)
Appear to have a mix of cuboidal and columnar cells in the basal layers, with squamous cells at the top.
Pseudostratified Ciliated Columnar
Appears to have more than one layer of column of cells, but the cells appear to be resting on the basal lamina. Cilia are on the top of the cells.
Transitional
Top cells appear to be larger, round, and have 2 nuclei. Connective tissue and a basement membrane
Stratified Cuboidal (online)
Double layer of squarelike cells, each having their own nuclei
Stratified Columnar (online)
Layers of cuboidal cells on the bottom with a single layer of columnar cells on the top.

Questions:
A. The study of histology is important in the overall understanding of anatomy and physiology so that you can gain an understanding of the structure and functions of different tissues throughout the body systems.
B. Epithelial tissues are named by their shape and cell arrangement.
C. Some epithelial tissues are stratified because there are many layers of cells to help

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