Investigating Circulation: What Is the Circulatory System?

The video explains how living organisms transport nutrients, gases, and waste. Simple organisms like amoebas have direct contact with their environment, while complex organisms like elk require a circulatory system. This system, consisting of blood, tissues, and organs, connects cells to the environment. Blood vessels and the heart play crucial roles in circulating blood throughout the body.

Describe the function of blood in the circulatory system.

What are blood vessels and what is their function?