33.1 Overview. Blood circulates through our entire body - Internal transportation Blood is pumped by heart and carries…. Oxygen Nutrients Hormones Waste Products To the cells in our body……. Components of Circulatory System Blood Heart Blood Vessels
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To the cells in our body……
What are the 3 main types of blood vessels?
Your heart is composed almost entirely of ______.
Powerful contractions of the myocardium (heart
muscle) pump blood through the circulatory system.
2 Sided Pump
Right: body heart lungs
Left: lungs heart to body
Atria (R/L Atrium)
Ventricles (R/L Ventricle)
Pump blood out of heart
or Bicuspid Valve
Capillaries– thin vessels, O2 and nutrients diffuse into tissues; single file
Blood: body → heart
Thinner and less elastic
Large veins contain valves
Muscles contract to move blood