A&P I Tissue System Essay

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a&BIOS251 Week 3 Lab Exercise Tissues and Integumentary System 1. Describe the characteristics of epithelial tissue. (5 points) 2. Describe the characteristics of connective tissue. (5 points) 3. Describe the characteristics of nervous tissue. (5 points) 4. Describe the various appendages of the skin and their structure. (5 points) 5. Identify some of the common disorders of the skin. (5 points) 6. Why are there no skin cancers that originate from stratum corneum cells? (5 points) 1. The epithelial tissue covers the surfaces of the body whether external or internal. It works as a protective covering or boundary for these surfaces. It includes the outer layer of skin, as well as the inter surface of “hollow” organs like stomach, colon, and blood vessels. 2. Characteristics of connective tissues are that it supports, binds together, and protects organs. This tissue is the most diverse of the four tissue types with variety of fuctions. 3. Nervous tissue is made of many cells packed closely together, and most are strongly branching. There are two main groups of cells. The neurons and the glial cells. You will find nervous tissue in the brain and spinal cord, and in the nerves and their associated ganglia. Nervous tissues are the main component of the nervous system, which regulates and controls body functions. 4. The appendages of the skin include the hairs, nails, sweat glands and the sebaceous glands. They are all associated with the skin and they serve a particular function. The nails protect the nerve endings while the sebaceous glands lubricate the skin and hair. 5. Psoriasis is a chronic skin disease in which scaly pink patches form on the elbows, knees, scalp, and other parts of the body. This disorder often runs in families. Acne is a skin disorder that causes pimples when the passageway that

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