Atlas of Plant and Animal Histology

Choose true or false. Each right answer scores 1, and each wrong answer scores -1. Not answered questions score 0.

1) Bone tissue is a calcium storage.

2) Osteoblasts are cells that differentiate into osteoclasts.

3) Osteocytes are multinucleate cells that remove bone.

4) The mineralized component of the bone extracellular matrix may be up to 60 % of the total extracellular matrix.

5) The osteonic bone is laminar bone.

6) The primary bone is spongy and the secondary bone is compact.

7) Vascular cavities are found in the spongy bone.

8) The Harvesian canals contain blood vessels and nerves in the osteonic bone.

9) Osteocytes send processes that run through the surfaces of the bone lamellae.

10) The endosteum overlies the interior of the Harvesian canals.

11) Bone tissue is formed from the embryo ectoderm.

12) Bone cells are derived from mesechymal cells.

13) Flat bones are formed by intramembranous ossification.

14) Endochondral ossification is observed in long bones.

15) Chondrocytes are involved in the intramembranous ossifcation.

16) The periosteum is the layer of tissue that overlies the external surface of bones.

17) The bone marrow is made up of cells found in the vascular cavities.

18) Osteoclasts are mutinucleated cells.

19) Osteocytes are found int he surface of the bones, where they sinthesize extracellular matrix.

20) Osteoblasts are found in the Harvesian canals.