Med school

At birth, a newborn’s body is approximately 78 percent water by weight, but that quickly drops to around 50 to 60 percent through the rest of life, with some individual and gender variation. Water in our bodies is unevenly distributed. Can you match these organs to their water percentages?

Skin

Brain

Kidneys

Bones

Lungs

73 percent

64 percent

83 percent

79 percent

31 percent

Answers: 1b; 2a; 3d; 4e; 5c.