Circulatory system: Blood vessels Laid end-to-end, an adult's arteries, veins and capillaries would stretch for about 100,000 miles - enough to wrap around the world nearly four times.

which may contribute to protection against cancer and heart disease. Research suggests that plant omega-3s help the cardiovascular system through several different mechanisms, including anti ...

Though it may not be the cure for the common cold, the benefits of vitamin C may include protection against immune system deficiencies, cardiovascular disease, prenatal health problems ...

Digestive System Ears Endocrine System Eyes Female Reproductive System How Do the Joints Work? (Video) Immune System Kidneys and Urinary Tract Lungs and Respiratory System Male Reproductive System ...