3 results for “marrow”
The Human Body
The Skeleton and Bones
marrow inside the bones is the body's blood factory. Red marrow, found in the hips
Article · 5 min read
The Human Body
The Heart and Blood
marrow. White cells, far fewer, are the immune system's soldiers, patrolling for bacteria, viruses and damaged
Article · 4 min read
Planets & the Solar System
Mars
The red planet is cold, dry and nearly airless today, but rivers once ran across it
Article · 4 min read
