BIO 201L Lab 5 Tissues and Skin 2023

Pre-Lab Questions: ”1. What is a tissue?” A tissue is made up of a variety of specialized cells that function as a single unit and have similar features.” 2. What is the function of epithelial tissue? Protection of the underlying tissues, absorption, secretion, and sensory reception are all functions of epithelial tissue.” 3. What is the function of connective tissue? Connective tissue serves a variety of purposes within the body, including binding and supporting, protecting, insulation, storing, and transporting chemicals.” 4. What is the function of muscular tissue? Function of muscle tissue involves stabilizing bodily positions, producing heat, and moving the body.” 5. What is the function of nervous tissue? The production of neurons, the transmission of nerve impulses, the response to stimuli, the provision of electric insulation for nerve cells, the conduct of communication, and the transport of information from those other nerve cells to the cell body are all functions of nervous tissue. In general, it orchestrates and regulates a variety of bodily functions.” 6. Describe sebaceous glands, sweat glands, and hairs concerning the function of the skin. Sebaceous Glands: Sebum, an oily or waxy substance that lubricates the skin and hair of mammals, is secreted by an exocrine gland inside the skin and opens into the a hair follicle. Deep under the epidermis, sweat glands control body temperature. Hairs: Guard the scalp's delicate skin and control body temperature.” 7. What is the function of melanin? Skin is colored by melanin, which also shields it from the sun's UV radiation.” 8. List the similarities and differences of the layers of the epidermis. Corneum Stratum: the top layer. The numerous dead skin cells that you expel into the environment make up this layer. the only layer that our eyes can see. Second layer of the stratum lucidum. Only the palms of the hands, the tips of the fingers, and the bottoms of the feet have this layer. Granulosum Stratum: third layer. A portion of the keratin is produced in this stratum. Fourth layer of the stratum spinosum. The skin is strengthened and made flexible by this layer. Keratinocytes are created in the stratum basale, where they develop before rising to the epidermis' surface and shedding as dead skin cells into the environment. Lab 5 Tissues and Skin BIO201L The fifth and thickest layer is it. Comparatively speaking, every stratum is avascular. They offer a water-resistant barrier that safeguards the body from infections. They aid in controlling body temperature. Experiment 1: Microscopic Slide Examination of Tissue ” Identify the following tissue slides: ” A- Simple Squamous Epithelium B- Simple Cuboidal Epithelium C- Adipose Connective Tissue D- Reticular Connective Tissue E- Elastic Cartilage Connective Tissue F- Cardiac Muscle Tissue G- Skeletal Muscle H- Nervous Tissue