140 likes | 213 Views
Explore the functions of the circulatory system – a crucial delivery system moving oxygen, nutrients, and waste materials. Learn about the heart, blood vessels, arteries, veins, capillaries, and the role of blood in maintaining overall well-being.
E N D
FUNCTION:Delivery system that moves oxygen and nutrients to the body's cells, and carries away carbon dioxide and waste materials.
Parts of the Circulatory System • Divided into 3 major parts: • Heart • Blood • Blood Vessels
Blood Vessels Hollow tubes that circulate your blood • Arteries • Veins • Capillaries
Arteries • Carry blood away from the heart • Have strong, muscular walls • The inner layer is very smooth so that the blood can flow easily http://hes.ucf.k12.pa.us/gclaypo/circdia.html
Veins • Carry blood to the heart • Transport waste-rich/ oxygen-poor blood back to the lungs and heart • Valves inside the veins make blood move in one direction http://hes.ucf.k12.pa.us/gclaypo/circdia.html
Capillaries • Only one cell thick • Connect arteries & veins • Food and oxygen released to the body cells • Carbon dioxide and other waste products returned to the bloodstream http://sln.fi.edu/biosci/systems/circulation.html
The Heart • Size of your fist • Thick muscular walls • 4 chambers –L/R Atrium, L/R Ventricle
Close up of heart valveHeart sounds are made by the valvesas they open and close http://hes.ucf.k12.pa.us/gclaypo/circdia.html
Blood • Carries nutrients, water, oxygen and waste products to and from your body cells. • White blood cells protect the body from germs http://hes.ucf.k12.pa.us/gclaypo/circdia.html