Lesson · S.1.3
The cardiovascular system
How the heart, blood, and vessels move oxygen around the body, and the anatomy the TEAS expects you to know.
ObjectiveS.1.3Read1 minExam weightHuman Anatomy and Physiology ≈ 41% of Science
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See editions and pricing →What you will be able to do
- Name the heart's four chambers and state which side sends blood to the lungs versus the body.
- Distinguish arteries, veins, and capillaries by direction of flow and function.
- Explain why the left ventricle's wall is thicker than the right ventricle's.
What the lesson concludes
- Right side of the heart sends blood to the lungs, left side sends it to the body.
- Arteries go away from the heart, veins return to it.
- Gas exchange happens in the capillaries, not the big vessels.