Exploring the Circulatory System
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Objective
I can trace the flow of blood through the pulmonary and systemic circuits, describing the major vessels and chambers involved.
Part 1 of 4
Warm-up video
CrashCourse · 10:08Vetted channel
We don't generate video — this one is by CrashCourse on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 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.
Part 3 of 4
Practice
3 questions
Describe the primary function of the heart as explained in the video.
Trace a drop of blood through the pulmonary circuit, naming the chambers and major vessels involved.
Part 4 of 4
Exit ticket
Quick comprehension check
“Describe the complete path of a red blood cell, starting in the right ventricle, moving through both the pulmonary and systemic circuits, and returning to the right ventricle. Name all major vessels and heart chambers the red blood cell passes through in the correct order.”
Sample answer included in the free materials
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