Lab two - Name Section DL3 Laboratory Report Exercise 2...

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Name: Section: DL3 Laboratory Report: Exercise 2: Histology Purpose: This exercise is conducted with the primary goal of gaining an understanding of histology. Which is the study of the microscopic anatomy of cells and tissues of plants and animals through observing different types of cells and tissue. Our tool for this observation will be our excellent by mail microscope. Upon review of the slides and material contained in our lab manual I will then answer questions relating to my observations. This is fundamental in understanding pathology and disease formation, along with the homeostatic function of the body. As always, our main safety concerns are to make sure I use a clean workspace and handle all slides and the microscope with care. Broken slides cause a risk for cutting fingers and can be dangerous for animals and children. (Especially wild children who’ve had to much chocolate valentines candy. slight glare to 4yr old girl). Activity 1: Epithelial Tissue Questions: 1. Why is the study of histology important in your overall understanding of anatomy and physiology? Histology is the study of the microscopic anatomy of cells and tissues of plants and animals. It is an essential tool of Anatomy and physiology because it allows us to study diseased tissue, provides an important tool in anatomical pathology, and allows for the accurate diagnosis of cancer and other diseases. 2. How are epithelial tissues named? Epithelial tissue is named based on their shape, size, and arrangement. Epithelial tissues come in three basic types: squamous, cuboidal and columnar. These three types of tissue are seen in either simple or stratified arrangements. 3. Why is some epithelium stratified? Stratified epithelium consists of more than one layer of cells. It is often found in situations subject to abrasion, where the top layers of cells are worn off. Layers underneath replace the lost cells, so the basic function of stratified epithelium is
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protection. 4. Unlike squamous cells, cuboidal and columnar cells have large, open cytoplasms. Which of the functions of epithelial tissue are supported by having such big cells? Cuboidal epithelium is commonly found in secretive or absorptive tissue: for example the exocrine gland, the pancreas, and the lining of the kidney tubules, as well as in the ducts of the glands. They also constitute the germinal epithelium, which produces the egg cells in the female ovary and the sperm cells in the male testes. Columnar epithelium forms the lining of the stomach and intestines. Some
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This note was uploaded on 02/21/2011 for the course BIOLOGY 130 taught by Professor Megan during the Spring '10 term at Ocean County College.

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Lab two - Name Section DL3 Laboratory Report Exercise 2...

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