It's in use 24 hrs a day as long as your heart is beating.
circulatory system does.
the heart is part of the circulatory system in the body.
The circulatory system works with digestive system to circulate the nutrients to all the body parts. The nutrients are digested and absorbed by the digestive system. The circulatory system circulates the nutrients throughout the body.
In an open circulatory system, the blood does not flow in closed vessels and surrounds the organs directly within the body cavity. This type of circulatory system is found in invertebrates like insects and mollusks.
The Circulatory System
the circulatory system is used for the circulation of blood, nutrients and oxygen
no it is an extension of the lung used to transport blood
closed circulatory system (double circulatory system)
They're both the circulatory system.
Amphibians have closed circulatory system Closed
The circulatory system
open circulatory systemclosed circulatory system.
Circulatory system
Cardiovascular system
The cadiovascular system, sometimes called the circulatory system when it includes the lymphatic system.
Well,circulatory system is made up of BLOOD and heart.
i believe it is the circulatory and the cardio-vascular systems cardiovascular or circulatory