CONGENITAL MELANOCYTIC NEVUS In December 2011‚ Christmas came a day early. My beautiful son‚ Tyson‚ was born. Not only was this little guy handsome‚ he had been touched by an angel leaving a special mark. Totally speechless by looking at the size of this unusual mark‚ it was located on his right leg. Starting from the knee down to the bottom of his foot shows a picture perfect visual of a little black boot. Doctors were fascinated with him and nurses were fussy among themselves taking turns
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This dry pigment is mixed in with linseed oil in order to make it liquid. Linseed oil dies by oxidation. According to Billy Martin‚ “it takes oxygen from the air and creates a crystalline solid that encases the pigment in a permanent form” (Martin). As a result‚ when the pain is completely dried‚ it cannot be removed. In order to create the oil paint‚ one must allocate the pigment and linseed oil. Place some pigment into a surface and add small amount of linseed
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to properly understand the oil painting technique‚ we must first understand its composition and ability to create. The paint itself is created using two elements: pigments and oil. The pigments are dry colorants‚ such as mineral salts and other earth types‚ ground-up into a fine powder and separated by color. But since the pigments could not adhere to the painting alone‚ oil was used as a binder to do just that. Typically‚ linseed oil was used because it can polymerize‚ and therefore is a drying
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Plant Hemoglobin Hemoglobin is a protein-iron compound found within the red blood cells of most vertebrates and is responsible for the cell’s red pigment. These red blood cells carries oxygen from the lungs to the rest of the tissue cells throughout the rest of the body. Just as hemoglobin transports oxygen in humans‚ they have also been found transporting oxygen within plants. In plants‚ there are two types of hemoglobin that can be found; symbiotic and non symbiotic. Oxygen is used
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Lecture 19 Notes Atropine blocks cholinergic transmission ( which would normally cause the pupillary constrictor muscles to narrow the diameter of the pupil Presbyopia – far-sightedness Retinal Pigment Epithelium(RPE) - contains pigment granules that absorb photons passing through the retina. Also responsible for producing a molecule called a 11-cis retinal. Hendry’s First Law of Lamination – states that layers exist in the central nervous System where a single structure performs more
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Lab 6 Prelab Spectrophotometry This is due at the beginning of lab 6. Read the lab protocol for this week and type your individual answers to the following questions. Each student should turn in answers at the beginning of class. You may consult other resources (textbook‚ library‚ etc.) Remember to cite information and put responses in your own words to avoid plagiarism (and loss of credit on the assignment). 1. Refer to step 2 in the protocol for lab 6. Calculate the concentration of the sample
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chronic (Huether & McCance‚ 2012). However‚ whether it be acute or chronic both forms are caused by a gallstone‚ solid components of bile‚ occluding the cystic duct. Moreover‚ gallstones can be classified as pigment gallstones and cholesterol stones. Pigment gallstones occur when unconjugated pigments in the bile precipitate and turn in to stones (Huether & McCance‚ 2012). On the other hand‚ the majority of cholecystitis cases are caused by cholesterol stones‚ which results when bile becomes supersaturated
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large cytoplasmic organelles. Plastids are major organelles found in the cells of plants and algae. Plastids are the site of manufacture and storage of important chemical compounds used by the cell. Plastids often contain pigments used in photosynthesis‚ and the types of pigments present can change or determine the cell’s colour. The term plastid was derived from the Greek word plastikas meaning formed or moulded. This term was coined by Schimper in 1885. In plants‚ plastids may differentiate
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Chapter 5 The Working Cell Energy • Capacity to do work • Types of energy – – – – Kinetic energy – energy of motion Potential energy – stored energy Thermal energy - heat Chemical energy - potential energy of molecules • Thermodynamics – Study of energy Oxidation-Reduction Reactions • When an atom or molecule loses an electron‚ it is said to be oxidized – process called oxidation • When an atom or molecule gains an electron‚ it is said to be reduced – process called reduction
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Squamous Epithelium. 3. Name and discuss the four cell types found in the epidermis. (Give the structure and function of each) * Keratinocytes- 90% filled with keratin and have a waterproof barrier. * Melanocytes- 8% produce melanin pigment and pass them to the keratinocytes. * Langerhans cells- phagocytes from the immune system and are easily damaged by UV light * Merkle cells- located in deepest layer of hairless skin and they are the sensory transduction. 4. Name the
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