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
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