Bone marrow

Summary: Some bones inside your body are not solid. For example, the long bones in your arms and legs. In the middle of these bones is a soft tissue called bone marrow. You can see this in Figure 3. The bone marrow produces red and white blood cells. Red blood cells carry oxygen around the body. White blood cells protect against infection. Tags: science student-book-7 biology Created: 2026-05-21 Last Updated: 2026-05-21

Bone marrow

Some bones inside your body are not solid. For example, the long bones in your arms and legs. In the middle of these bones is a soft tissue called bone marrow. You can see this in Figure 3. The bone marrow produces red and white blood cells. Red blood cells carry oxygen around the body. White blood cells protect against infection.

Source

This concept is from the [Science Student Book 7](Science Student Book 7/Biology/Body Systems/2.2 Skeleton.md), Biology section.