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

Urinary System

      Your body makes chemical waste items that it can not use.  Then it goes to the bloodstream to then go to the kidneys. Then the kidneys sepraet the waste from the stuff your body needs. when your bladder becames too full sends a message to your brain. you feel the need to pee and start looking for a place to pee.  

http://yucky.discovery.com/flash/body/pg00012.html

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

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

digestive system

the digestive system starts at your esophagus goes down to your stomach were the acids in you body brake down the food into smaler peices. Then enters your small intestine then the large intestine. After it goes through the stomach and the intestins it will go to your ascending colon wich goes to the descending colon were it is turned into poo. From there it goes to your rectum but not out then to the anal canal and then out the BUTT!!!. Were it is flushed down the toilet. There is a picture of the digestive system above.

It is from the apple teacher page.

Skeletal System

All joints represent some type of mechanical movement such as an elbow joint is like a door hinge. Some of the other joints are hand joints, hip joints, and spine joints. I think that 

the joints are not that simple but that is a good way of representing them.

The upper part of the skull is made up of eleven parts. They are the Anterior Fontanelle, the Bregma, the Sagital Structure, the Coronal Structure, the Frontal Bone, the Lambda, the Lambdoid Structure, the Occipital Bone, Parietal Bone, the Parietal Foramen, and the Posterior Fontanelle. I am surprised there are so many parts of the upper skull.

The three bones that make up the Knee are the Femur, the Fibia, the Patella (or Kneecap). I thought there was more bones than that in a Knee.

Sources:www. Innerbody.com

The Muscular System

The Muscular System is the system of muscles that are connected to your bone with tendon and other tissue. They convert force and chemical energy into tension and contraction, which allows your body to move. Muscles move by simply shrinking, but they can't expand. Muscles are made up of many tiny protein filaments. Many muscles are separated by nerves that connect the muscle to the brain. You have on Average about 600 muscles.
Muscles are necessary at all times. You have cardiac muscles in your heart which pump blood, and smooth muscles that line your inner organs. These muscles are called involuntary muscles because you can't control them consciously.
On the other hand, skeletal muscles can be control ed. I am typing using my skeletal muscles in my fingers, which I am controlling. Muscles make up about 23% of a women's weight, and about 40% of a man's weight. I think muscles can be used too much sometimes. Lats year I was pitching and i through my arm out. Now it hurts every time I use it a lot.

Click the link for more info: http://www.innerbody.com/image/musfov.html#

Cardiovascular System

The cardiovascular system is what allows your body to circulate blood, fight germs, and get rid of dead cells. The cardiovascular system is also known as the circulatory system which allows blood to flow through your body. In the circulatory system there are three different types of cells that each serve a different purpose. Red blood cells carry oxygen through the body, white blood cells fight of unknown bacterias, and clotting platelets that fill in scrapes, cuts, and other damaged parts of the body. All of these cells travel through the body with the help of three main organs. The Arteries pump blood away from the heart, veins bring the blood back to the heart,and capilaries which is where the arteries and veins connect to give out oxygen. If you stretch out your arteries, veins, and capillaries they could go around the world a little more than two full times. I personally thought that this article was interesting but also imformative. Here is a link to my source.

http://encarta.msn.com/encyclopedia_761566878/Circulatory_System.html

http://www.bioing.auckland.ac.nz/physiome/ontologies/cardiovascular_system.php