The atrium is part of the heart, which is a part of the circulatory system.
Circulatory system
The bones belong to the skeletal system.
Sweat glands belong to the integumentary system.
system
Cornary sinus
The heart contains atrium
Circulatory system
Circulatory system
Circulatory system
They belong to the nervous system
right atrium
The kidneys belong to the excretory system.
Veins belong to the circulatory system, because they transport blood there for they belong to the circulatory system.
The bones belong to the skeletal system.
The eyes belong to the Nervous system.
The lungs belong to the Respiratory System.
Arteries and veins belong to the cardiovascular system.