Science and technology news from Hopkinton Independent School

Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts

Sunday, June 8, 2008

the lymphatic system


the lymphatic system has many jobs. first it serves as a defense mechanisms because it filters out organisms that cause disease. It also produces certain white blood cells and generates antibodies. the lymphatic system distributs fluids and nutrients in the body. it also drains excess fluids and protein so that tissues do not swell up. here is a picture of the lymphatic system

Saturday, May 24, 2008

Skeletal System (by Michael Collins)


There are 27 bones in each hand, with 8 in the wrist, 5 in the palm, and 14 in the fingers and the thumb. There are three bones in each finger, and 2 in the thumb. The distal phalanx, middle and the proximal phalanx are the bones that make up the fingers, although the thumb does not have a middle phalanx. While typing this, I believe I used all my finger-bones, although I might not have used my metacarpals, which are the bones that connect your fingers to your wrist.
-- Michael Collins

Wednesday, May 21, 2008

the SPLEEN

one of the most made fun of body parts in a human body, but it is the biggest of the lymphoid tissues is the spleen. It is just about the size of the heart and can hold up to .3 gallons of blood. The spleen is located on the left side of your body right behind the stomach. This organ has an important job to the digestive system . it produced white blood cells, filters blood and destroyed old red blood cells. here is a picture of the whole digestive tract and the spleen. the spleen is made out of a spongy material and it is hard to repair.
here is a picture of the spleen and its sections



to read more about the spleen

http://www.innerbody.com/image_dige06/lymp02.html

Monday, May 19, 2008

The Lymphatic System

The Lymphatic system is mostly used for filtering out bacterias and diseases. It also produces kinds of white blood cells. One of its other uses is to distribute fluids and nutrients through the body. It and the cardiovascular system are closly realated.

http://www.innerbody.com/image_lympov/lympov-new.html

Saturday, May 17, 2008

The Nervous System

I have three sites for you to check out.  
The first one is basics about the nervous system, such as what nerves are.  I found the part about the how the nerve cells send messages the most interesting.
 

The second site is a more in depth versions of the brain parts and their jobs.  I thought, that how some scientist think that the left and right parts of the cerebrum are a lot different than they look, was really cool to think about. Also try "".


The third and the one that I think is the coolest is an interactive picture of the brain that lets you rotate it and look at all the different parts. 

go to site # 2 and click on the picture that looks like this:

"



Thursday, May 15, 2008

Anatomy Sites

Here are some sites you can use to research your organ systems:

If you're interested in cells, try CELLS Alive! at: http://www.cellsalive.com/




If you're brave, you can check out this NY Times slideshow: http://www.nytimes.com/slideshow/2008/04/21/science/Bassett_index.html

More images from the Bassett Collection are on Flickr at: http://www.flickr.com/photos/stanfordmedicine/sets/72157603949930348/

Monday, March 17, 2008

Dolphin gets fake tail

Winter, the baby dolphin has a prosthetic tail. Winter got caught in a fishermen’s net in Florida. She suffered from deep cuts, so much that the scientists didn’t think that she would make it. They were able to heal the main cuts on her body but they couldn't save here tail. So they made a plastic thing shaped like her old tail and put it on her. Ever since then Winter has been doing great and you would never know that she doesn’t have a real tail.

http://news.bbc.co.uk/cbbcnews/hi/newsid_6030000/newsid_6032900/6032973.stm

Wednesday, March 12, 2008

Bad Monkeys

Through out India, monkeys run wild and live as a part of society in some cities. In one Indian town though, things are out of hand. Four monkeys jumped on the balcony of the mayor, and while trying to fight the monkeys off, he fell of the balcony and died. The people are starting to not like that the monkeys are "invading" the cities. There is a good reason. India's towns and cities are expanding fast and taking the monkeys homes. What do you think, do the monkeys have rights, or should they leave.

a different "Big Bang"

Have you ever heard about the biggest volcano eruption in history? Some names that might come to mind are Mount St. Helens or even Krakatua, but as big as these might seem they are not the biggest. The biggest and maybe the least heard of is Tambora. In April of 1815 the volcano on a island in Indonesia erupted enough lava to cover the whole island, and killing most of their people. There was an estimated of 60,000 deaths but that wasn't the only problem. The ash from the volcano went into the air and caused some nasty problems. Because of the disturbance cattle would not eat and the crops would not grow. This caused a huge famine worldwide. The reason that the BIGEST volcano eruption is not know as well is because of the communications at the time. The only was to communicate with other countries was by ship. With this lack of communication few people even knew that there was a volcano eruption to begin with

http://www.volcano.si.edu/world/volcano.cfm?vnum=0604-04

Kors, Joshua Big Bang

Mini-Cat Cars

Introducing the new car of tomorow! The mini-cat car is a car that is environmentally friendly and fuel efficient. This car is cheap to assemble and cheap to fuel. The mini-cat car runs on compressed air, and electricity which is safe for the environment and the air tanks are easy to get rid of. The compressed air can't catch fire and won't leave harmful vapors that other cars have. The car also doesn't need sparkplugs or batteries to run so there is less matenance needed. The mimi-cat car is environmentally friendly and is the safe car of the future.
Here are the links so you can learn more about the mini-cat car.

http://www.theaircar.com/acf/air-cars/energy-storage.html

http://www.theaircar.com/acf/

Tuesday, March 11, 2008

Monkeys run wild

NEWS FLASS:
MONKEY POPULATOIN PROBLEM IN NORTH INDIA. MAYOR KILLED ON HIS OWN PORCH BY THESE MONKEY MENACES.

That's not just jiber jaber to make a paper famous. it's true just look here at

If your a monkey person go to India the monkey population is maching the humens at estimated 20,000 - 25,000.
This is high!

Saturday, February 23, 2008

Scientific Theory

The Florida Board of Education has approved a science curriculum which includes evolution:

http://www.miamiherald.com/top_stories/story/425473.html

Is it a victory for the "Forces of Science", or is it ... NOT quite a victory?

Some people think that a "theory" is something that isn't proven. However, as the article says, a "scientific theory" is "a scientific and testable concept based on facts."

QUESTIONS FOR THOUGHT:
  • How can we TEST evolution?
  • What facts is it based on?
  • Why would some people NOT want evolution taught as scientific fact?

Tuesday, February 19, 2008

The Big Frog

Scientists from London and New York City have found a 70 million year old frog fossil in Madagascar (Africa). The frog is called  Beelzebufo. The same fossil was found in South America. The frog is thought to been big enough to eat small dinosaurs.   

Sunday, February 10, 2008

Music, Noise, and Words

Should we be practicing our guitar playing instead of studying our spelling words? Scientists at Northwestern University might think so. Here is the link to an article about how music helps you do better in languages:

Then again, if your house gets too LOUD, your verbal skills might suffer! Here is the link to an article about how babies learn more slowly when there are more distractions in their homes:

Both these stories came from: www.sciencedaily.com

Saturday, February 9, 2008

Science Labels

Let's use these labels to classify our posts:

What other categories of science can you think of?