heart
no, however the heart, air passage ways, and blood vessels are.
Well,circulatory system is made up of BLOOD and heart.
Circulatory System has blood.
cardiovascular, circulatory and respiratory.
circulatory system because blood flows through your veins
There are many Organ System for Food and Oxygen. The Food Organs are the Mouth, Pharynx, Esophagus, Stomach, Liver, Pancreas, Small Intestine, Large Intestine. The Air Passage Organs is in the Nose, Trachea, Lungs, Heart. This Topic is all about the Circulatory system, and the Digestive System
A closed circulatory system
The circulatory system consists of the heart and blood vessels.
The circulatory system primarily carries blood throughout the body, delivering oxygen and nutrients to tissues and removing waste products. Urine is not transported by the circulatory system; instead, it is produced by the kidneys and excreted through the urinary system. Lymph, on the other hand, is part of the lymphatic system, which is closely related to the circulatory system but serves to transport lymph fluid that helps in immune responses and fluid balance. Thus, while blood is carried by the circulatory system, urine is not, and lymph is transported through a separate system.
Closed circulatory system.
The respiratory system works directly with the circulatory system when to oxygenate blood.
... The major organs of the circulatory system are the heart, blood, and blood vessels.