Why is a bone hollow?

Answer 1

Technically speaking, it is hallow because there needs to be room for what's stored inside. The stuff inside is called marrow, which makes blood and has blood vessels that are in it so blood can flow throughout the body, and without marrow, we'd all be dead. :)

Answer 2

Bones are hollow to reduce weight and provide support. The hollow structure also allows for the storage of bone marrow, which produces red and white blood cells. This design maximizes strength and efficiency for movement while still providing necessary support and protection.

Answer 3

It isn't hollow it has bone marrow in it, but when someone dies it becomes hollow because the marrow dries up.

Bird bones are not filled with marrow. They are essentially hollow. This makes the bird lighter, which facilitates it's ability to fly.

Answer 4

Long bones have to make red blood cells with bone marrow, and the bone marrow has to fit inside the long bone.

Answer 5

Bones are hollow because according to the laws of physics a hollow bone can support more weight than a solid one.

Answer 6

Some bones are hollow because they contain a marrow cavity with makes Red (RBCs) and White (WBCs) blood cells. Some contain yellow marrow which has fat cells and do not make blood cells.

Answer 7

they contains bone marrow, which is useful for making blood

Answer 8

bones are hallow because the marrow inside them produces red blood cells

Answer 9

Birds have hollow bones to help them fly. Solid bones would add to much weight and make it impossible to fly. All of a bird's bones are hollow.

Answer 10

They're not. Bones are filled with bone marrow. Some bones might seem empty and/or hollow due to decay of tissue. This is mostly in cases where the person has broken a bone.