Module 8 Intro

Module 8—Circulation, Immunity, and Excretion

Lab: Investigation 8.A: Identifying Structures of the Circulatory System

You now have the opportunity to dissect a heart. You may choose to do a real dissection, or you may choose to view a virtual dissection. If you perform a real dissection you will need to follow the steps outlined in Investigation 8.A on page 272 of the textbook.

Otherwise, view the following slide show of the dissection of a sheep’s heart to help you identify structures. The show will also help you fully understand how oxygenated and deoxygenated blood moves through the heart to the rest of the body. Sheep have a four-chambered heart, just like humans, and a sheep’s heart is similar in size. By studying the anatomy of a sheep's heart, you can learn about how your own heart pumps blood through your body and keeps you alive.

Once you have completed the dissection of your choice, go to the Lesson 1 Assignment to finish an activity charting the flow of blood through the principal structures of the human heart.