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Science and Nature Term Papers and Reports |
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Adrenal Gland
1019 Words - 4 Pages.... of tissues throughout the body. The release of adrenaline prevents hypoglycemia (low blood sugar), by binding adrenergic receptors in the hormone releasing cells of the pancreas. Epinephrine is called the “fight” or “flight” hormone.
The actions of epinephrine and norepinephrine are generally similar, although they differ from each other in their effects.
Norepinephrine constricts almost all blood vessels. Norepinephrine is formed by intravenous infusion to combat the fall in blood pressure associated with types of shock. Norepinephrine is formed in the body from the amino acid tyrosine, and epinephrine is formed from norepinephrine.
Mineralocorticoids steroids c ....
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Hurricane Flloyd
1093 Words - 4 Pages.... storm force winds extended up to 85 miles from the center of the storm.
The system moved west-northwest at 16 mph and forecasters expected Floyd to continue along this track for 72 hours. Floyd was in an area very favorable for development and satellite images indicated the system was strengthening. The center of the system was not yet well defined, but forecasters believed Floyd could reach major hurricane strength with maximum sustained winds of 112 mph or more after 72 hours.
Tropical Storm Floyd Continues to Intensify
Washington, September 9, 1999 -- The National Hurricane Center (NHC) reported that Tropical Storm Floyd was located about 45 ....
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Leprosy
351 Words - 2 Pages.... a person first gets, but when the body can't fight it turns into lepromatous. This formattacks nerves, the skin, the mucous membranes, and the eyes.In most cases it is easy to detect the disease. At first many people will loose a sense of feeling in a patch of skin. Then after the loss of feeling in certain area the muscles may become paralyzed due to the damage of the nervous system. Many times since people loose feeling in certain areas of their body, injuries occur to them that are unnoticed and become infected. After the disease has settled into ones body it starts to eat away at thebones causing people to loose parts of their body. All of these signs can be prevented ....
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Define A Concept : Astrology
552 Words - 3 Pages.... believed was up in the sky. Zeus and the other gods and goddesses were based on the planets that were visible to the people of that time. Astrology was also popular in Babylon, Egypt, the Middle East, and China.
Modern Astrology has changed as new planets have been discovered. Astrology is about the interaction between the planets, including the Sun and the Moon, and the Star Signs. It studies the mathmatical cycles on which these interactions are based.
In some ways, the forces between the planets involved in Astrology can be simplified into one word : gravity. The Sun has the greatest gravity and, therefore, the strongest affect on Astrology, followed by the Moon and the ot ....
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Center Of Gravity
958 Words - 4 Pages.... but it may lie outside the center if any weight is added
or subtracted. Many toys that have trouble balancing themselves, have their
actual center of gravity far from where an observer would locate it.
Another example of the importance of the center of gravity is how
an airplane flies. If the center of gravity is too far forward, the plane
will have an unstable equilibrium and in turn will take a nose dive into
the ground. If the center of gravity is too far aft (back) the plane will
fall out of control.
You must limit the weight and its positioning on board the aircraft
to prevent these occurrences from happening. The engineers design an
airplane so that it has a maximum ....
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The Kangaroo
1108 Words - 5 Pages.... "Old Man" in Australia. The Gray Kangaroo, the most well known
species average weight is 145 pounds and from nose to tip of the tail is 10
feet long. The tail alone is about 4 feet long. The kangaroo has a small
head with large ears and a small mouth. The fur is soft and woolly and
some can have stripes on them. The kangaroo's body is specially built for
jumping. It has two long, powerful hind legs with four toes on each. The
front legs are short and have five toes with claws. These paws are used to
handle food. Most of it's weight it in the hind legs and tail. Kangaroos
can jump across flat land up to thirty miles an hour. Even though it is
quite timid, kangaroos ....
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Animal Testing
926 Words - 4 Pages.... tens of thousands of Beagles experimented with. In Albuquerque, New Mexico, 64 Beagles were forced to inhale radioactive Strontium 90 as part of a “Fission Product Inhalation Program” which has been paid for by the U.S. Atomic Energy Commission. In this experiment 26 dogs died. One of the deaths occurred during an epileptic seizure; another from brain hemorrhage. Other dogs, before death, became feverish and anemic, lost their appetites, and had hemorrhages. The experimenters compared their results to those experiments conducted at the University of Utah and the Argonne National Laboratory in which beagles were injected with Strontium 90. They concluded that the dose ne ....
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Encephalitis -
699 Words - 3 Pages.... virus has entered the blood stream, it can localize the brain causing inflammation of brain cells and surrounding measures. White blood cells invade the brain tissue as they try to fight off the infection. The brain tissue swells (cerebral edema) and can cause destruction of nerve cells, bleeding with in the brain (intracerebral hemorrhage), and brain damage. This can cause neurologic deficits such as parplysis, speech changes, increased intracranial pressure, respiratory failure, seizure disorders, and shock can occur.
SIGNS AND SYMPTOMS
Mild cases absent superficial reflexes
Sudden fever *** exaggerated deep tendon reflexes
Poor ....
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