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Biology 30 - The Excretory System Part 3
- Subject:
- Biology
- Author:
- Distance Learning Centre
- Date Added:
- 04/12/2018
Biology 30 - The Excretory System Part 3
This lesson describes how the circulatory system works, including the heart, blood vessels and blood. Students learn about the chambers and valves of the heart, the difference between veins and arteries, and the different components of blood. This lesson also covers the technology engineers have developed to repair the heart if it is damaged. Students also understand how the circulatory system is affected during spaceflight (e.g., astronauts lose muscle in their heart during space travel).