heart
The cadiovascular system, sometimes called the circulatory system when it includes the lymphatic system.
the circulatory system and the respiratory system are the names
The heart <3
the heart
Cardiovascular system.
Lymphatic System
an open circulatory system
closed circulatory system
The circulatory system.
Material moves from the respiratory system to the circulatory system by diffusing across a membrane in the air sacks called alveoli.
Its venules
Material moves from the respiratory system to the circulatory system by diffusing across a membrane in the air sacks called alveoli.