which organ system contains the kidnys
Kidneys belong to the genitourinary system where as liver belongs to the hepatobiliary system or gastrointestinal system
If you are referring to chickens, and kidneys! Then yes! "checkins" do have "kidnies"!
They belong to the nervous system
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.
The dura mater belong to the craniosacral system.
Sweat glands belong to the integumentary system.
Livers of all animals belong to the digestive system.