Lab 2 Manual

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Houston Community College *

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1306

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Biology

Date

Dec 6, 2023

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Uploaded by MasterValorNightingale48

Lab 2: Identifying Epithelial Tissue. Summary : In this lab, we will look at various epithelial tissue and gain a better understanding of the different ones we will see in our bodies and other mammals. We will also get a little bit more familiar with using oil immersion to set us up for the next lab. Materials: - Microscope. - Slide container labeled (Comprehensive Medical Histology Set). o Slides used will be: 1. Mammal Simple Cuboidal Epithelium, sec. 31-2366 2. Human Simple Squamous Epithelium, sec. 31-2360 3. Human Stratified Squamous Epithelium, sec. 312540 4. Human Stratified Squamous Keratinizing Epithelium, sec. 31-2552 5. Mammal Transitional Epithelium, sec. 312462 6. Human Glandular Epithelium, sec. 31-2444 7. Human Simple Columnar Epithelium, sec. 312436 *For Number 8, I will help with using oil immersion. Please let me know when here. 8. Human Simple Ciliated Columnar Epithelium, sec. 312428 - Immersion Oil (handled by professor unless stated otherwise) - Kim Tech Wipes - Proper PPE if stated at the start of class.

Examples of Epithelial Tissue:

Definitions/Key Notes: Simple: A word used to describe a singular layer of cells. Stratified: A word used to describe more than one layer of cells. Pseudostratified: Give off the appearance of being stratified due to their structure; but are single layered (simple). Ciliary: Short microscopic hairlike structures. They function in the movement of substances or a unit. Squamous: Appear as thin-flattened cells. When stratified, make up the outer layer of the skin. Cuboidal: Cube-shaped cells. Some can be found in the epithelium lining of the ducts in the pancreas, and of glands. Columnar: Tall, narrow, cylindrical looking cells. Found throughout the organ system, including the digestive tract, and the female reproductive system. Transitional Cells: A cell that changes shape in response to stretching. Primarily found in the lining of the structures in the urinary system. (Ureter, Bladder, and Urethra). Keratinizing epithelium: Some cells are keratinocytes which simply produce keratin in quantities to help bulk the epithelium and keep it protected. When thinking about this, consider the palm of the hand. Glandular: A specific epithelium specialized in produce and secreting substances. (Sweat, saliva, breast milk, hormones.)

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Assignment: Inform me on at least two levels of 40x magnification so I can check your progress. If you are on the last one, let me know so I can help you with oil immersion.

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