A mitochondrion (Terminologia histologica: Mitochondrion) is a cell organelle of eucaryotes with ovoid shape that is the major source for intracellular energy. Mitochondria are present in all but mature red blood cells. They can migrate through the cytoplasm and change their shape. These organelles have an outer unit membrane (membrana mitochondrialis externa) and an inner membrane (membrana mitochondrialis interna). The latter has protrusions into the matrix (mitochondrial plasma). Depending on
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of the gastrointestinal system? A) digestion B) filtration C) absorption D) secretion E) motility Answer: B Diff: 4 Page Ref: 568 2) Which of the following is the correct order of the layers of the gastrointestinal tract wall‚ from lumen to external surface? A) mucosa submucosa muscularis externa serosa B) serosa muscularis externa submucosa mucosa C) serosa mucosa submucosa muscularis externa D) mucosa submucosa serosa muscularis externa E) submucosa
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characteristics‚ put “A” for artery‚ “C” for capillary‚ and “V” for vein: v contain the lowest pressure a contain the highest pressure a has thick tunica media v thin tunica media c smallest of the blood vessels a carries blood away from heart v largest lumen—blood reservoir c has only one tunic (intima) v carries blood toward the heart c site of exchange of nutrients 3. Name the three groups of arteries: 1. elastic artery 2. muscular artery 3. ateriole 4. Elastic arteries have a thick tunica
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Simply get polar plot for luminaire and work out the illumination on surface for a given lamp. Called the point illumination method. 2 The lumen method We want to estimate the illumination pattern from a set of diffuse lighting sources over a broad area in a room. This is a more complicated exercise. We will be using the total flux method‚ or lumen method to get rough and reasonable estimates of the lamps/luminaires needed. This method is used in areas where a uniform light intensity of the
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000-hour rated average life1 * Superior color rendering with 92 CRI * Remote phosphor (yellow) disappears when energized to provide soft‚ even light * Emits virtually no UV/IR light in the beam * Contains no mercury * Output: 940 lumens * Length: 4.8″ * Diameter: 2.7″ diameter * Weight with Batteries: 5.4 oz. Easy to experience * ENERGY STAR® Qualified * Assembled in USA * 3-year limited warranty Pricing: The L Prize bulb retails for $60 but Philips
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abdomen. Scientists are not sure what the appendix does‚ if anything‚ but removing it does not appear to affect a person’s health. The inside of the appendix is called the appendiceal lumen. Mucus created by the appendix travels through the appendiceal lumen and empties into the large intestine. Obstruction of the lumen causes appendicitis. Mucus backs up‚ causing a bacterium that normally lives inside the appendix to multiply. As a result‚ the appendix swells and becomes infected. An inflamed appendix
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falls into an area in Lux? Lux is the unit of luminance ‚ measuring light intensity per unit area. The amount of light that falls into an area of lux is equal to one lumen per square metre. Hence‚ if an area of 1m² is lit up by 1000 lumens‚ the intensity of illumination will be 1000 Lux. If an area of 10m² is lit up by 1000 lumens‚ the intensity will be 100
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diverticulitis is a weakened area somewhere in the colon wall. With accompanying pressure in the lumen‚ a protrusion results in the areas of weakness in the colon wall. There are different factors that can contribute to increased pressure within the lumen. Low dietary fiber intake‚ increased peristaltic contractions‚ and individual colon structure all are factors that can influence pressure on the lumen (Marrs‚ 2006). Diverticulitis is one of the most common medical conditions that occur in the United
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a) Using a human cell of your choice‚ describe how organelles work together to make and secrete a protein (LO1. AC 1.1) An epithelial cell in the thyroid gland‚ called a thyrocyte forms spherical follicles that produce a protein called thyroglobulin. This is a globular protein that has a functional role in metabolism. The protein is used by the thyroid gland to produce thyroid hormones; thyroxine (T4) is an example of one of the hormones created. Thyroxine is formed by iodine binding to tyrosine
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into the lumen of the stomach via counter transport with potassium whereas chlorine enters in the stomach via cotransport with potassium. In this way‚ acid is secreted. This acid helps in conversion of pepsinogen into pepsin. Pepsin is an important enzyme for the digestion of proteins. Mechanism of Action of PPIs: Proton pump inhibitors inhibit hydrogen-potassium pump by binding irreversibly with a cysteine residue on hydrogen-potassium ATPase pump. Hydrogen is not pumped into the lumen of the stomach
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