Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Cardiovascular System - Hatboro
Document related concepts
Transcript
CARDIOVASCULAR SYSTEM Ms. Kelly 7th Grade Health What is it? • Body system that moves (“circulates”) blood from the heart to the lungs and the rest of the body • Blood delivers oxygen and other nutrients to all body cells (in less than 60 seconds!!) Cardiovascular Terms • Blood • Heart • Arteries • Veins • Capillaries Blood • The conduit for gases, nutrients and waste products through the body • Contains plasma, red blood cells (RBCs), white blood cells (WBCs) and platelets Heart • Muscle (about the size of your fist) that pumps blood to the lungs and to the rest of the body • Every day the heart pumps about 1,800 gallons of blood through 75,000 miles of blood vessels!!! Arteries • Vessels that carry blood and nutrients AWAY from the heart • Usually oxygenated blood Veins • Vessels that carry blood TOWARD the heart • Usually de-oxygenated blood Capillaries • Smallest blood vessels in the body • Oxygen diffuses across membrane into cells… carbon dioxide released as a waste product into blood Pathway of Blood in the Heart
