Detailed information about the many functions and components of the cardiovascular system. Also looks at the lymphatic system and cardiovascular disease.

Learners are introduced to the circulatory system, the heart, and blood flow in the human body. Through guided pre-reading, during-reading and post-reading activities, students learn about the circulatory system's parts, functions and...

Try this experiment where you examine the blood vessel network of your retina and the eye's blind spot. Includes a safety precaution.

[Free Registration/Login may be required to access all resource tools.] The lymphatic system is a network of vessels and tissues that carry a clear fluid called lymph. The lymphatic system works with the cardiovascular system to return...

Explore the physical problems associated with Williams Syndrome and explain the role of elastin in body structure and function. Investigate the relationship between blood vessel diameter and hypertension and take a person's blood pressure.