Overview
The circulatory system is vital for sustaining life, as it ensures that oxygen and nutrients are delivered to every cell in the body while removing waste products. It consists of the heart, which pumps blood, and a network of blood vessels that transport blood throughout the body. Understanding how ...
Key Terms
Example: The heart beats to circulate blood.
Example: The aorta is the largest artery in the body.
Example: Veins have valves to prevent backflow.
Example: Capillaries connect arteries and veins.
Example: Red blood cells give blood its color.
Example: White blood cells increase during illness.
Related Topics
Respiratory System
The system responsible for gas exchange, working closely with the circulatory system.
intermediateNervous System
The system that controls body functions and interacts with the circulatory system.
intermediateEndocrine System
The system that regulates hormones, which can affect heart rate and blood pressure.
advancedKey Concepts
HeartBlood VesselsBloodCirculation