without these organs and structures, you would get really sick because toxins and waste would build up
A. Esophagus, stomach, small intestine
B. Kidneys, bladder, urethra, ureters
C. Skin, hair, nails
D. Bones, cartilage, ligaments
A. Esophagus, stomach, small intestine
B. Kidneys, bladder, urethra, ureters
C. Skin, hair, nails
D. Bones, cartilage, ligaments