The Circulatory System - Kyrene School District
The Circulatory System
Structures in the Circulatory System
Heart ? pumps blood throughout the entire body.
Muscle that is the size of your fist.
Has a left side that pumps blood with oxygen into the body.
Has a right side that pumps deoxygenated blood into the lungs to pick up oxygen.
Heart Chambers
?Receives blood through 2 chambers: Left & Right Atrium
?Blood is pumped out by 2 lower chambers: Left & Right Ventricles.
?Valves control the flow of blood through the chambers so blood never goes back into a chamber once it is pumped out.
Circulation
?The Ventricle's powerful contractions is what we feel as the heartbeat through the arteries.
?Circulation: One way high speed transport system carrying fuel and oxygen to all cells of the body.
?The heart beats about 70 times per minute
?1 cup of blood equals 1 beat
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