The Circulatory System Resources
Most animals are complex multicellular organisms that require a mechanism for transporting nutrients throughout their bodies and removing waste products. The circulatory system has evolved over time from simple diffusion through cells in the early evolution of animals to a complex network of blood vessels that reach all parts of the human body. This extensive network supplies the cells, tissues, and organs with oxygen and nutrients, and removes carbon dioxide and waste, which are byproducts of respiration.
Learning Objectives (Biology II TAGs)
II.5. Describe the general organization of the animal body.
Recommended Textbook Resources
OpenStax: Biology 2e
Chapter 40, Plasma membrane, In all animals, except a few simple types, the circulatory system is used to transport nutrients and gases through the body. Simple diffusion allows some water, nutrient, waste, and gas exchange into primitive animals that are only a few cell layers thick; however, bulk flow is the only method by which the entire body of larger more complex organisms is accessed.
Student Assessment Activities
Student Assessment Activities are below; instructors can also Download a Circulatory System Student Activities Word File or View the Circulatory System Student Activity Google Doc.
Explain the similarities and differences of a closed- and open-circulatory system.
Name all the components (cells and dissolved solutes) of the blood, then cite each of their specific biological contributions to homeostasis (i.e. their functions).
Create a table that outlines the regulators of blood pressure. Be sure to include how each acts to regulate pressure.
List in sequence the path of blood flow through the mammalian circulatory system.
Number and explain the steps of the cardiac cycle.
Find the correct answers to the end of the chapter “Review Questions.” Note the page number on which you found the answer. Be prepared to share and explain your answers in a group setting.
Answer the end of the chapter “Critical Thinking Questions.”