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What is a trabeculated bladder?

During trabeculation, the bladder wall thickens as the muscles work to overcome the obstructions in the urethra, according to Spinal Hub. The thickened muscular wall is the result of an enlargement of the muscular sleeve surrounding the bladder and can result in loss of elasticity.\nUrinary obstruction is detected by a decreased urine flow and pain, according to Medscape. Those concerned about urinary obstruction should consult with a urologist to perform a physical examination, urinalysis, and an ultrasound of the bladder and urethra to detect the presence of an obstruction that may lead to t..

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At what temperature does wood combust?

As the surface temperature of the wood approaches 100 C, the water within the wood boils and then evaporates away, which makes the wood dry enough to ignite.\nWood begins to char slowly at temperatures between 120 C and 150 C.\nBetween 280 C and 480 C, the wood undergoes primary combustion, releasing large amounts of energy and unburned gases.

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Where do fossils come from?

When sediment hardens around organic remains, it creates a cast around the material. When the remains erode away, the cast serves as a mold. If mineral-rich water flows through the mold, it may leave deposits behind that crystallize into a hard stone residue. Over time, this residue can fill the mold, creating a stone replica of what once was there. Fossils are usually skeletal remains because those body parts tend to last long enough to form distinct impressions in the sediment while flesh rots away too quickly.

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How was lead discovered?

Though lead has been mined in great amounts for thousands of years, it is somewhat rare in its free state. The most common lead ore is galena.\nLead is a soft, heavy and dull silver metal with a low melting point. It is a poor conductor of electricity and resists corrosion. Metalworkers prize lead for plumbing pipes, solder and in construction because of these attributes.

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What is the Mercalli scale?

The Mercalli scale also takes into account the observations of individuals in relation to the damage done to buildings in affected areas. It is used in differing forms as an integral part of maintenance software aimed at recording intensity levels during an earthquake.\nThe Mercalli scale has 12 levels. At level one, the earthquake is not observable by individuals and is only picked up by seismographs. By level six, people in the area experience trees swaying and falling objects causing damage. Level 12 would encompass total destruction of the affected area.

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What is the strongest wood?

Mahogany is used in Victorian furniture reproductions as well as the crafting of Empire, Georgian and Federal reproduction furniture. Walnut is another strong and durable wood without being too heavy and is especially popular for fine cabinet making. Teak, indigenous to Southeast Asia, is another hard and strong wood that is also heavy. Teak carves well but is often used as a veneer due to its high value.

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What are some adaptations that oak trees exhibit?

Oak trees that have large stomata are usually found in hot climates. Larger stomata, which are tiny pores in the leaves, allow the plant to cool down through evaporation.\nOther types of oak trees have leaves that curl up in response to drought, or drop their leaves during dry periods. They allow sap to flow easily in early wood when water is plentiful, and slow down the rate of water movement through the cells during droughts.\nOak trees in North America, especially older ones, can tolerate some fires. The evergreen cork oak, which is native to the Mediterranean, grows a thick covering of cor..

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How many kidneys does a normal human have?

Kidneys are often compared to filters for the human body. They have a variety of functions, but the most important is to filter out organic waste from blood and the byproducts of metabolism. The kidneys are able to dispose of waste products, like urea, through two ureters (one for each kidney), which is then directed to the bladder to be expelled. The kidneys also remove any excess electrolytes to maintain an appropriate balance in the body.

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When did Mount Saint Helens erupt?

Prior to the 1980 eruption, recorded eruptions from 19th century include a major eruption in 1800, followed by smaller eruptions between 1831 to 1857. During that time, the largest eruption occurred in 1842. Other major eruptions date to 1480, 400 B.C., 1200 B.C., 1600 B.C., 1900 B.C. and 2500 B.C. It experienced a 2,000-year eruptive period beginning 20,000 years ago and another eruptive period that ended about 35,000 years ago.

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Who said electron paths cannot be predicted?

The equation that Heisenberg derived from his principle can also be explained using energy and time, in which when one becomes more constrained, the other becomes less so. Heisenberg's work has roots in quantum theory, which was developed by other physicists, including Erwin Schrödinger. Heisenberg's theory also explains how the sun is able to shine and how atoms don't implode on themselves.

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