front 1 Hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones. | back 1 True |
front 2 Compact bone is replaced more often than spongy bone. | back 2 False |
front 3 Bones are classified by whether they are weight-bearing or protective in function. | back 3 False |
front 4 The periosteum is a tissue that serves only to protect the bone because it is not supplied with nerves or blood vessels. | back 4 False |
front 5 Short, irregular and flat bones have large marrow cavities in order to keep the weight of the bones light. | back 5 False |
front 6 In newborn infants, the medullary cavity and all areas of spongy bone contain yellow bone marrow. | back 6 False |
front 7 The structural unit of compact bone (osteon) resembles the growth rings of a tree trunk. | back 7 True |
front 8 The term "osteoid" refers to the organic part of the matrix of compact bones. | back 8 True |
front 9 Sixty-five percent of the mass of bone is a compound called hydroxyapatite. | back 9 True |
front 10 All bones formed by intramembranous ossification are irregular bones. | back 10 False |
front 11 An osteon contains osteocytes, lamellae, and a central canal, and is found in compact bone only. | back 11 True |
front 12 The trabeculae of spongy bone are oriented toward lines of stress. | back 12 True |
front 13 Bone tissue in the skeleton of a human fetus is completely formed at six months' gestation. | back 13 False |
front 14 Each consecutive bone lamella has collagen fibers that wrap in alternating directions. | back 14 True |
front 15 Cartilage has a flexible matrix which can accommodate mitosis of chrondrocytes. | back 15 True |