Which list is an organ system?
the liver, blood, and skin
the liver, the bladder, and the heart
the heart, arteries, and veins
the heart, the stomach, and intestines
1 answer
the heart, arteries, and veins
the liver, blood, and skin
the liver, the bladder, and the heart
the heart, arteries, and veins
the heart, the stomach, and intestines
1 answer