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From the long tube of the gastrointestinal system and the lungs of the respiratory system last week, we move on to that very sensitive system of the body—the skin, and to that miraculous system of the body—the heart and the related circulatory system. You will add words related to the integumentary system and the cardiovascular system to your vocabulary of medical terms.
Start this week by reading the online lectures. Use the textbook to learn medical terms related to these two systems. Read the medical reports carefully to see some of these terms in context. When you think you have understood the report, answer the comprehension questions.When you are ready, take the vocabulary self assessments. Throughout the week post your responses to the discussion questions and reply to the contribution of others. Also, share with other students any mnemonic devices you create.You will end this week by completing the writing assignment and reading it to your facilitator’s voicemail| | | Integumentary System (1 of 2)|
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An IntroductionThe word integumentary is derived from the Latin word integumentum, which means “to cover.” What covers the body? The skin. The integumentary system consists of the skin, which is the largest organ of the body and covers a surface area of 2 meters. The skin makes up 12–15% of body weight.Of the integumentary system, what you can see are the skin, the hair, and the nails. What you do not see are the hair follicles, the glands, the nerve fibers, the layers of the skin, and the cells in these layers.The outer layer of the skin is the epidermis. This layer has keratinocytes which produce keratin. This is the protein that goes to make nails and hair. The inner layer is the dermis. This layer has sensory receptors that let us feel touch and temperature. In this layer, hemoglobin (red), melanin (brown), and carotene (orange-yellow) make up the color palette that determines the color of the skin.The functions of the skin include thermoregulation, excretion of salt water and wastes, physical protection, and synthesis of vitamin D3. You can easily guess the meaning of thermoregulation because you know the meanings of the two parts of the word thermo and regulation.Here are some more words to break down: dermatitis, psoriasis, and scleroderma. These are names of skin diseases. A dermatologist would treat these diseases. That’s another word for you, and it is easy to guess its meaning.The graphic on this screen shows how to decode two of the medical terms you have just read.| | | Words in Context
In your reading, you often come across new words. You can usually make a guess about the meanings of such words from the context in which they appear. This is also true of medical terms. Your knowledge of these terms will grow as you see them in context. Read this consultation report about a skin rash. You will find that you can make sense of it with occasional help for meanings of medical terms. On reading the report, you will take a self assessment. VAMS General Hospital
San Diego, California
Patient Name: Jane Bond
Patient Number: 2004-007
Patient Room: 007
Birth Date: 07/07/50
Report Date: 07/07/04
Consulting Physician: Dr. E. Schar
The patient is a 54-year-old white female, admitted to the hospital for a skin rash of unknown etiology. I reviewed the chart and examined the patient. None of her immediate family members (husband and two children) have developed a facial rash, lesions, or any other similar infection. She denies contacts with any animals recently, and has no pets. The patient reports that the onset of this lesion started three weeks ago when she first noticed a few diffuse papular lesions on her forehead that slowly increased in number, over the first week, spreading to her nose and periorbital region. In the course of the next two weeks the lesion rapidly spread to encompass her whole face, and anterior nares, becoming...