Question

Crabs have solved a problem for researchers, who are trying to understand how bones heal

Answer 1

$\huge{\boxed{\boxed{\bf{\red{Hello!!!:}}}}}$

$<font color ="blue">$

After a broken bone is treated, new bone tissue begins to form and connect the broken pieces. ... In some cases, certain risk factors make it more likely that a bone will fail to heal. When a broken bone fails to heal it is called a "nonunion." A "delayed union" is when a fracture takes longer than usual to heal.The periosteum is one source of precursor cells which develop into chondroblasts and osteoblasts that are essential to the healing of bone. Other sources of precursor cells are the bone marrow (when present), endosteum, small blood vessels, and fibroblasts

Answer 2

Answer:

The majority of broken bones heal normally when a doctor stabilizes them. However, an inadequate blood supply to the bone may lead to a nonhealing fracture. Blood vessels provide bone with oxygen and chemicals called growth factors that encourage healing