1. spongy bone is different from compact bone because spongy bone a. is composed of numerous osteons b. contains osteons all aligned in the same direction along stress lines c. does not contain osteocytes contained in lacunae d. is composed of trabeculae that are oriented along lines of stress

Is composed of trabeculae that are oriented along lines of stress. (Ans. D)

Explanation:

Spongy bones are also known as trabecular and cancellous bones. It is covered by compact bones and present in the long bones. They are known as spongy because they are highly vascular and porous tissues.

Osteoblast thin area creating the turbeculae space between the tissues. Spongy bones are also known for home of hematopoietic stem cells and bone marrow, which are helping to differentiate white blood cells, red blood cells, and platelets.

Some difference between spongy bone and compact bone are:

1) Spongy bones are light weight and compact bones are heavy.

2) Spongy bones are composed of trabeculae and compact bones are composed of osteons.

3) Spongy bones are known as cancellous and compact bones are known as cortical bones.

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