The circulatory system works closely with the respiratory and digestive systems to deliver oxygen and food to the cells, as well as to remove waste. This system includes blood, the heart, and the blood vessels. In the animal kingdom there are open and closed circulatory systems. Students will explore the difference. There are also variations in heart structure, typically in the number of chambers. Students will explore this also. In the hands-on, comparative portion of this lesson, students will observe and manipulate hearts from three different specimens: a squid, a dog shark, and a mammal. Field trips include a classroom dissection, a high school blood drive, and a trip through the chambers of the heart.
Heart 101: https://www.youtube.com/watch?v=GMBSU-2GK3E Circulatory System Function: https://www.youtube.com/watch?v=l9mgbEn0m40&feature=youtu.be Components of Blood: https://www.youtube.com/watch?v=gQLeeJZA6bk Travel Through the Heart: https://www.youtube.com/watch?v=Jwog6qMuDZY