Long Bone Cross Section Anatomy and Bone Cells Quiz

Ossification centers develop in the ______ connective tissue membrane.

Mesenchymal cells cluster and differentiate into ______, forming an ossification center.

Osteoid is secreted and ______.

Accumulating osteoid is laid down between embryonic blood vessels, forming a honeycomb of immature ______ bone.

Compact bone replaces immature spongy bone, just deep to the ______.

Intramembranous ossification forms the cranial bones of the skull (frontal, parietal, occipital, and temporal bones) and the ______.

Endochondral ossification is more complex than __________ ossification

Ossification begins when the underlying mesenchymal cells specialize into __________

The perichondrium becomes __________ as osteoblasts secrete osteoid

Osteoblasts secrete osteoid against the hyaline cartilage diaphysis, encasing it in a collar of __________

Endochondral ossification uses hyaline cartilage 'bones' formed earlier as models for bone __________

Beginning late in the second month of development, endochondral ossification process begins using __________ cartilage

In endochondral ossification, a bone develops by replacing ______ cartilage.

In intramembranous ossification, a bone develops from a fibrous ______.

The beauty of using flexible structures (membranes and cartilages) to fashion the embryonic skeleton is that they can accommodate ______.

If the early skeleton was composed of calcified bone tissue from the outset, growth would be much more ______.

Bone tissue begins to develop at about this time and eventually replaces most of the existing fibrous or ______ structures.

Bones are capable of growing thicker throughout ______.