Yellow Marrow
The substance inside the carpal bones that stores fat is called bone marrow. It is a soft, gelatinous tissue found within the central cavities of bones and is responsible for producing blood cells and storing fat.
Birds have hollow bones and very large breasts
The special material in bones that makes blood cells is called bone marrow. Bone marrow is a soft, spongy tissue found in the cavities of bones and is responsible for the production of different types of blood cells, including red blood cells, white blood cells, and platelets.
All bones of a newborn start as cartilage therefore has no cavities. As the baby grows up, they turn into bones through ossification.
Are made of hard material ( bones and cartilage ) that are inside the body.
Bone marrow
marrow
Bone marrow is a soft tissue found in the cavities of bones that produces blood cells in the body.
often called Sinuses
sinuses.
The mucous membrane-lined cavities found in several bones surrounding the nasal cavities are called paranasal sinuses. These sinuses include the frontal, maxillary, ethmoid, and sphenoid sinuses. They help to lighten the skull, produce mucus, and regulate the resonance of the voice.
only in the spinal cavity all of the others the bones are the borders of the cavities.