What is the role of the perichondrium that surrounds the cartilaginous model early in the process of endochondral ossification?
A. It produces red bone marrow.
B. It produces chondrocytes and the model grows.
C. It produces osteoclasts.
D. It forms the epiphyseal plate.
E. It forms trabeculae that accumulate osteoid.
B. It produces chondrocytes and the model grows.
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Systemic venous is ____ alveolar , and systemic venous is ____ alveolar
a. greater than, greater than b. greater than, less than c. less than, greater than d. less than, less than e. equal to, equal to
Bones with a diaphysis and epiphyses are classified as:
A) long bones. B) short bones. C) irregular bones. D) flat bones.
What genetic disorder is caused by having three chromosomes 21?
A. albinism B. sickle-cell disease C. hemophilia D. Down syndrome E. achondroplasia
Sometimes the granules in the cytoplasm of neutrophils are so large, that the nucleus is almost hidden from view.
Answer the following statement true (T) or false (F)