Exploring the Circulatory System
11th Grade · Science · 30 min
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Learning Objective
I can trace the flow of blood through the pulmonary and systemic circuits, describing the major vessels and chambers involved.
- 1
The heart's main function is to maintain a pressure gradient to pump blood throughout the body.
- 2
The heart is enclosed in a double-walled sac called the pericardium, which includes the outer fibrous pericardium and the inner serous pericardium.
- 3
The two loops of blood circulation are the pulmonary loop, where blood gains oxygen in the lungs, and the systemic loop, where oxygenated blood travels to the rest of the body.
