Circulatory system

Function

Carries oxygen- and nutrient-rich blood to all tissues and returns carbon dioxide and wastes.

Includes

Heart, arteries, veins and capillaries.¹²

Organs of this system

• Heart

Educational illustrations, not medical images.

A short overview linking this part to related content.

Conditions that affect it

• High blood cholesterol (hyperlipidemia)Condition
• Pulmonary hypertensionCondition

Includes

• Blood vesselsOrgan
• HeartOrgan

Related to

• Vascular surgerySpecialty
• Radiology (diagnostic and interventional)Specialty
• Trauma care and surgerySpecialty

Specialty

• CardiologySpecialty

References

1. 1
   NCI SEER Training. Cardiovascular System. training.seer.cancer.gov/anatomy/cardiovascular/
   Educational & historical references · Accessed 2026-10-03
2. 2
   NHLBI / NIH. How the Heart Works. www.nhlbi.nih.gov/health/heart
   Health agencies & guidelines · Accessed 2026-10-04