its oval shaped not circular
hormonal imbalance on circulatory system
The cadiovascular system, sometimes called the circulatory system when it includes the lymphatic system.
There are many common circulatory system ailments. Some of them include atherosclerosis, anemia, leukemia, and some coronary heart diseases.
what the symptoms of common ailment of the circulatory system
Some do some don't! :D
there are some about circulatory system and nervous system
The body systems connected to the circulatory system are 1. Respiratory system 2. Digestive system 3. Muscular system
If the blood of the circulatory system is missing, then you have a dessicated corpse or mummy of some kind.
Some species, like insects, have an open circulatory system
Heart Attack '>'
The components of the circulatory system include the heart, blood, and blood vessels. The pulmonary circulation is also part of this complex system.
Mollusks which have an open circulatory system, have blood that is pumped into sinuses containing tissue.