Yellow marrow Peniosteum
Trabeculae
Lining the inside of the long bone seen here, adjacent to the medullary cavity is a layer of bone cells called the endosteum. What is
the function of the endosteum?
A)
B)
It is a thin layer of cartilage that reduces friction and acts as a shock
absorber
The endosteum contains blood vessels, nerves, and lymphatic vessels that
nourish compact bone.
The bone cells within the endosteum cause the bone to grow, repair, and
remodel throughout its life.
This is the only bone tissue containing osteoblasts, the bone cell
responsible for forming new bone.
C)
D)

Atown located beside a river derives a large percentage of its revenues each year from the local logging industry. however, heavy traffic to and from the logging sites has increased pollution and contributed to soil erosion. this has also resulted in the loss of native bird species in the logged forests. which of the following is the most sustainable solution to this problem? protecting certain forested areas to allow the birds to recover relocating the equipment and vehicles to new forests for logging relocating the birds to new forests away from the town introducing new bird species to replace the species that have been lost reducing the number of trucks traveling through the forest by 10 percent