Tuesday, December 1, 2009
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10:39 AM
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The nervous system is always buzzing around It buzzes with messages that run to and from all the parts of your body. Every second, hundreds of these messages make their journey through the body. The messages are carried by strings of totally original cells called neurons, or nerve cells. Neurons are the basic things that make up the nervous system. Neurons are like unique pieces of art because, unlike other cells in your body, they can’t be replaced. No worries. You’re born with enough to last your whole life. Neurons come in all shapes and sizes, but they have some stuff in common. The big part of the neurons is called the cell body. The cell body has the nucleus the circle in the middle, which tells the rest of the cell what to do.
You can think about the cell body being kind of like a switchboard for the Mega-fast messages sending neuron. Running into the nucleus are tiny little things that look like tree branches called dendrites. The dendrites carry messages to the cell body of a neuron. The thing that looks like a long tail is called an axon, it carries messages away From the cell body. Each neuron only has one axon, but the axon can be From 1 millimeter to more then 1 meter in length Did you see that at the bottom of the neuron it looks like the axon splits into spaghetti strings? These spaghetti strings are called axon terminals ends. Axon terminals forward messages to the dendrites of other neurons like forwarding an email to a new person. Axon terminals are usually quite a ways away From the cell body. There are three types of neurons in your nervous system – sensory neurons, interneurons, and motor neurons. To find out how they work, try This Press your Finger against your desk. What happens? You feel the Pressure of the desk pushing into your skin. It might even hurt, if you Press hard enough. Before long, you more your finger. How do neurons let you do all this? Special cells called receptors get information from around you. In this activity the receptors are in your finger. Messages travel from these receptors to your spinal cord and brain through sensory neurons. Your spinal cord and brain have interneurons. Interneurons connect sensory neurons to motor neurons. It is through motor neurons that the messages from your brain and spinal cord are sent to a muscle cell or gland cell in your body. The muscle cell or gland cell that responds to the motor neuron is called an effector.
Wednesday, November 18, 2009
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1:07 PM
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a- The two major subdivisions of the nervous system are
1- Central nervous system
2- Peripheral nervous system
B- The name for a nerve cell is - Neurons
C- The two structures that make up the central nervous system are the brain and spinal cord
D- The brain weighs 3 pounds
C- There are about 100 billion nerve cells in the brain
D- The whale has the biggest brain
E- The lizard has the smallest brain
f- Brain size does not correlate to intelligence
G- The Cerebral cortex is located on the top of the brain
H- The one area of the brain that is responsible for memory and learning is - The Hippocampus
I- The four major lobes of the brain are: frontal Lobe, temporal lobe, partial lobe occipital lobe
j- Two functions that are dominant on the left side of the brain are - Math and Logic
k- The right side of the brain - music and face recognition
L- The structure that connects the right and left cerebral hemisphere is - the Corpus callous
M- The Left side of the brain Controls language in most people
Thursday, November 12, 2009
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10:43 AM
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In Mesopotamia farmers settled and adapted to the uncertain environment of the river plain. The first of these peoples to produce written records were the Sumerians. Some Sumerian towns grew into city states composed of an urban center that ruled the surrounding agricultural land. At first the primary leaders of these states were priests, but they gave way to kings who assumed all manner of religious, administrative, legal, and military responsibilities.
Mesopotamia developed sharp social divisions that were reflected in the Class bases penalties set down in the Law Code of Hammurabi.
Law Code of Hammurabi: is a well preserved ancient law Code, created ca 1790 in ancient Babylon it was enacted by the Sixth Babylon king Hammurabi. One nearly complete example of the Code survives today in the Akkadian language.
Mesopotamia religion involved gods that embodied the uncertain forces of the environment, and the people strove to appease those gods through public, state organized religion focused on temple precincts maintained by privets. To transform the natural environment and human Society, the Mesopotamia developed various technologies, including the Cuneiform writing System, irrigation, bronze casting and technologies, for producing monumental architecture.
Thursday, November 5, 2009
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9:32 AM
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Mesopotamia was settled, and conquered, by numerous ancient Civilizations. Mesopotamia was home to some of the oldest major ancient civilizations, including the Sumerians, Akkadians, Babylonians and Assyrians. In 5000 BC, the Sumerians arrived in Mesopotamia. The Semites arrived in 2900 BC and by 2000 BC they had mixed peacefully with the Sumerians and had assumed political dominance. The mitanni were an eastern Indo European people belonging to the linguistic satem group who settled in northern Mesopotamia circa 1600 BC South East of Turkey and by circa 1450 BC established a medium size empire east, north and west, and temporarily made tributary vassals out of kings in the west, even as for as kafti and making them a major Threat for the pharaoh.
The word Mesopotamia is in origin a Greek name mesos middle and Potamos River so land between the rivers Civilization developed in Mesopotamia simultaneously with Egypt and the two are often called the fertile crescent. The Fertile Crescent is a rich food growing area in a part of the world where most of the land is too dry for farming. The Fertile Crescent begins on the eastern shore of the Mediterranean Sea, and curves around like a quarter moon to the Persian gulf.
The Greeks later called this region Mesopotamia, which means between the rivers. Many different civilizations developed in this small region. First came the Sumerians, who were replaced in turn by the Assyrians and the Babylonians. Mesopotamia is famous for the site of some of the oldest civilizations in the world.
Early civilizations first developed in Mesopotamia over six thousand years ago. Some of the first cities were established, a writing system was developed, empires were created and monumental buildings were constructed.
As each new group of people moved into the region, or took control of the government, they adopted some of the culture. Therefore, certain aspect of civilization in Mesopotamia remained the same, and some changed over time.
Much of Mesopotamian history lay buried beneath the sand and soil for thousands of years. However, there were clues, such as the mounds known as tells and the ruins of ziggurats, that treasures lay below the surface. In the past two hundred years, people have begun to excavate objects and buildings which reveal the ancient history of this region.
Writings from Mesopotamia uruk. modern warka are among the earliest known in the world, giving Mesopotamia a reputation of being the Cradle of Civilization.
It is said that Mesopotamia was the place of the legendary Garden of Eden.
Mesopotamia does not refer to any particular civilization. Over the course of several millennia, many civilizations developed, collapsed, and were replaced in this region including the Sumerians - Akkadians - Babylonians and Assyrians.
Mesopotamia had no natural boundaries and was difficult to defend. The influence of neighboring counties is large. Throughout the history of Mesopotamia trade contacts, slow diffusion of foreign tribes and military confrontations had been of great influence.
Wednesday, October 14, 2009
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1:18 PM
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The nervous system gets in and sends out information about whats happening in your body. It also watches what's happening outside your body and responds to it. Tons of information that your body gets frome the outside world is flashed through your nervous system like mini Mega fast text messages. Almost immediately, your nervous system tells the other parts of your body what to do - Scratch the itch. laugh at ScoobyDoo, eat a Cookie. Your nervous system keeps Tabs on your breathing, blood pressure and body Temperature. If your nervous system is working properly, it Keeps your body working the way its supposed to no matter what's happening inside or outside your body. These changes whether they happen once or Five hundred Times are Called stimuli. Without your nervous System, you couldn't move think, laugh feel pain or enjoy that warm delicious Cookie mom made.
Tuesday, October 6, 2009
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10:24 AM
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Cerebellum: The part of the brain below the back of the cerebrum. It regulates bundle, posture, movement, and muscle coordination.
Corpus Callosum: A large bundle of nerve fibers that connect the left and right cerebral hemispheres. In the lateral section, it looks a bit like a con its side
Medulla Oblongata: The lowest section of the braninstem at the top end of the spinal cord it controls automatic functions, including heartbeat , breathing etc.
Thalamus: A relay station in the forebrain thought to be an important gathering point for input fromthe senses
Thursday, September 24, 2009
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10:22 AM
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The physical characteristics of modern humans like those of all other creatures, had evolved over incrediby long periods of time. Until recently, the evidence was too fragmentary to be convincing. Charles Darwin - The origin of species; he theorized that, over very long periods of time the changes brought about by evolution could lead to distinct new species. Because humans shared so many physical similarities with African apes, he proposed that Africa must have been the home of the first humans. Since 1950, Louis and Mary Leakey and their son Richard along with many others, have discovered a wealth of early human fossils in the exposed sediments of the Great Rift valley of Eastern Africa. These finds are strong evidence for Dart's hypothesis and for Darwin's guess that the tropical habitat of the African apes was the cradle of humanity.
Tuesday, September 22, 2009
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10:43 AM
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George Harrison - Any Road
- A song about lack of direction
- 'If you don't know where you are going, any road will take you there'
http://www.youtube.com/watch?v=kGQMRjRRLDU
Must remember that geographical aspects can change over time. If geography changes- then so can its infuences on a civilization.
Gender relationships
- Mesopotamia women - more or less controlled (law codes e.g Hammurabi) though some rights re: especially property were maintained
-Egypt - more respect for women, wives and mothers in literature and art.
Geography influential in many different aspects of civilization and its rise, development and demise.
Monday, September 21, 2009
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1:00 PM
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Evolution: The biological theory that, over time. changes occurring in plants and animals, mainly as a result of natural selection and genetic mutation, result in new species.
Today, I watched this clip about civilations -http://www.youtube.com/watch?v=v_a3N0mx8zE
Wednesday, September 16, 2009
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1:41 PM
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Vocabulary:
MIND - The contents and processes of subjective experience: sensations, thoughts, and emotions.
This is a clip I watched about research methods - http://www.youtube.com/watch?v=PrlI9oErJJg
My name Laura Smith. I am 22 years old. I am in third year of University. My favorite subject is Human kinetics.
My favorite movie is Mama Mia. I work at Boston Pizza. My favorite Sport is bowling.
Please enjoy my blog!
kindest,
Laura Smith
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