Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
The Circulatory System What goes around, comes around Circulatory System (on sheet, not “notes”) Organ System Function Organs/Parts Circulatory system • To move nutrients, hormones and gases around the body • Heart • Blood vessels Hemoglobin (not notes) • Red blood cells carry a protein called “hemoglobin” • Hemoglobin binds O2 so that can be carried to where it needs to be • It contains iron, making iron important in your diet You will often see the circulatory system presented like this, showing the major veins and arteries… …but the circulatory system goes EVERYWHERE, using smaller and smaller blood vessels to reach all parts of the body Back out to body Heart (notes) To left lung To right lung • Has four “chambers” it uses to pump • One-way valves keep the blood from flowing backward From right lung From left lung • https://www.youtube.com/watch?v=0N mWOHuy-o8 From the body Heart attack (not notes) • The heart is a muscle and needs oxygen and nutrients • If these blood vessels become blocked the heart muscle begins to die • Because the body isn’t used to receiving pain signals from the heart, it can misinterpret them as pain from the arm Types of Blood Vessels (notes) • “Blood vessel” is anything that carries blood • An artery is a vessel that carries blood away from the heart. We color it red. • A vein is a vessel that carries blood to the heart. We color it blue. • A capillary is a small blood vessel of any type. Arteries are red Veins are blue This is a cute poem But entirely not true (not notes) • Blood in veins is a darker red, but is not blue • It appears blue because of the way light penetrates the skin • If you ever see a vein colored blue in a picture, that is only for clarity “Cardiovascular System” (notes) • The name for the respiratory and circulatory systems combined