Hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones.

True

Compact bone is replaced more often than spongy bone.

False

Bones are classified by whether they are weight-bearing or protective in function.

False

The periosteum is a tissue that serves only to protect the bone because it is not supplied with nerves or blood vessels.

False

Short, irregular and flat bones have large marrow cavities in order to keep the weight of the bones light.

False

In newborn infants, the medullary cavity and all areas of spongy bone contain yellow bone marrow.

False

The structural unit of compact bone (osteon) resembles the growth rings of a tree trunk.

True

The term "osteoid" refers to the organic part of the matrix of compact bones.

True

Sixty-five percent of the mass of bone is a compound called hydroxyapatite.

True

All bones formed by intramembranous ossification are irregular bones.

False

An osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only.

True

The trabeculae of spongy bone are oriented toward lines of stress.

True

Bone tissue in the skeleton of a human fetus is completely formed at six months' gestation.

False

Each consecutive bone lamella has collagen fibers that wrap in alternating directions.

True

Cartilage has a flexible matrix which can accommodate mitosis of chrondrocytes.

True