Working that muscle heart is a muscle little left of the middle of your chests about the size of fist heart sends blood around body blood provides body with oxygen and nutrients it needs carries away waste heart is like pump right side receives blood and pumps to lungs left side receives blood from lungs and pumps to body
We got the beat before each beat, heart fills with blood muscle contracts to squirt blood
Heart parts heart made of 4 blood filled areas each called a chamber two chambers each side of heart one on top one on bottom two chambers on top - atria left and right atrium chambers on bottom - ventricles left and right ventricle squirt out blood to body and lungs septum - thick wall of muscle down middle heart septum separates left and right side atria and ventricles work together atria fills with blood then dump into ventricles ventricles then squeeze blood out of heart four special valves in heart
2 are mitral and tricuspid let blood flow from atria to ventricles
2 are aortic and pulmonary control flow as blood leaves the heart
It's great to circulate blood moves around through arteries and veins circulation - movement of blood through heart and body body needs steady supply of blood to work right without circulating blood a person could die
Listen to the lub-dub heart makes a lub-dub sound when valves open and close lub = mitral and bicuspid valves close, dub = aortic and pulmonary valves close
Pretty cool - It's my pulse pulses are found where large arteries run beneath skin main ones are neck and wrist
Keep your heart happy most kids are born with healthy hearts strong heart need exercise need 30 min. of exercise a day eat healthy
5 servings of fruit and veggies avoid soft drinks and fruit drinks don't smoke
Respiratory System
Locate those lungs lungs in chest take up most space in chest, so large left lung smaller than right
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