Ashley Black The Integumentary System Exercise 1: Structures of the Skin Fill in the names of the numbered structures in the diagram in the table below the picture. 1 Hair Shaft|7 Hypodermis| 2 Arrector pilli muscle|8 Dermis| 3 Sebaceous(oil) gland|9 Epidermis| 4 Hair follicle|10 Subpapillary vascular plexus| 5 Eccrine sweat gland|11 Dermal papillae| 6 Hair follicle receptor(root hair plexus)|12 Pore| QUESTIONS: A. How does the skin tan when exposed to ultraviolet
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alone‚ approximately 20 million individuals are infected with an estimated six million newly diagnosed HPV infections annually.4 HPV is a double stranded DNA virus that affects squamous and basal cells of the oral‚ nasal‚ skin‚ vaginal‚ and anal epithelium and is
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There are no multicellular plants in the oceans Most are photosynthetic single cells Cambrian is in Paleozoic era Called Cambrian explosion‚ because in this 70 million years. We have an explosion of every multicellular organism. Wednesday October 31st‚ 2012 CAMBRIAN Phanerozoic Eon Eras: Paleozoic (most recent : 550 Ma until now) – multicellular organisms in the oceans The periods in the Paleozoic era are: Cambrian Ordovician: end is one of the 5 mass extinctions. So many organisms
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Bacteria are the most ancient life forms‚ most bacteria are so small that under a light microscope you can only see them as little dots. Some groups however grow to larger sizes and have spectacular shapes (1). Bacteria are present in most habitats on the planet‚ growing in soil‚ water‚ acidic hot springs‚ radioactive waste‚ and deep in the Earth’s crust‚ as well as in organic matter and the live bodies of plants and animals (2). Bacteria is mostly thought of as a pathogen‚ while it is true that
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What is it?Lactobacillus is a type of bacteria. There are lots of different species of lactobacillus. These are "friendly" bacteria that normally live in our digestive‚ urinary‚ and genital systems without causing disease. Lactobacillus is also in some fermented foods like yogurt and in dietary supplements.Lactobacillus is used for treating and preventing diarrhea‚ including infectious types such as rotaviral diarrhea in children and traveler’s diarrhea. It is also used to prevent and treat diarrhea
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Tumor Biology: What happens in carcinogenesis? Further reading Carcinogenesis: What is cancer? Immune system: function and importance in cancer Causes and risk factors of cervical cancer The term "cancer" refers to a large group of very different diseases. They have one thing in common: the uncontrolled division of cells of an organ or tissue. These cells do not grow old and die not from spite of many changes in how healthy cells. They disguise themselves so the immune system does not recognize
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Jaime Vonk Med. Careers PCT 1 October 14‚ 2012 Clostridium Difficile Clostridium difficile is a gram positive‚ spore forming anaerobic bacillus‚ which may or may not carry the genes for toxin A-B production. These two types of protein exotoxins produced by the Clostridium difficile bacillus‚ toxin A and toxin B‚ can have an infectious form and a non-active‚ non-infectious form. The disease spreads throughThe spores can survive for a longer period of time in the environment and are not infectious
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What is a cough reflex? Describe the process that Cari’s respiratory system is using to clear her lungs by coughing? A cough reflex has both sensory (afferent) and motor (efferent) components. Pulmonary irritant receptors (cough receptors) in the epithelium of the respiratory tract are sensitive to both mechanical and chemical stimuli. Stimulation of the cough receptors by dust or other foreign particles produces a cough‚ which is necessary to remove the foreign material from the respiratory tract
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We must spend time in the sun-shine. Some time in the sun is healthy for us. Our body makes its own Vitamin D when we get out in the sun. It also makes Melatonin‚ which helps us sleep at night. As we age‚ our bodies make less Melatonin‚ but taking a walk in the sunlight can help to replete the supply and help an older person sleep better at night. Sunlight also helps in preventing and treating depression. People in cloudier climates have higher rates of depression than those in sunnier environments
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Signs and symptoms of Conjunctivitis‚ Swelling of conjunctiva and watering of the eyes are symptoms common to all forms of conjunctivitis. However‚ the pupils should be normally reactive‚ and the visual acuity normal. Viral Viral conjunctivitis is often associated with an infection of the upper respiratory tract‚ a common cold‚ and/or a sore throat. Its symptoms include excessive watering and itching. The infection usually begins with one eye‚ but may spread easily to the other. Viral conjunctivitis
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