The Circulatory System
The veins and arteries
for a more in-depth look go to: http://hes.ucfsd.org/gclaypo/circulatorysys.html
a helpful song/video
illnesses involving the circulatory system
some illnesses like angina are caused by poor blood flow, and have effects like chest pains. and others are more server like clogged arteries that can lead to strokes and can kill you.
Little Known Fact
- blood is not blue inside your body or if it is deprived of oxygen, it is dark red.
- that after needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.
- There is about 0.2 milligrams of gold in our bodies, most of which is in our blood.