skeletal System

The diaphysis, epiphysis, and medullary cavity are

• formed by osteons.
• filled with bone marrow.
• structures of a long bone.
• More than one of the above is true.

Injury to the epiphyseal disc of a long bone

• ˜makes the bone more susceptible to greenstick fractures.
• ˜impairs longitudinal bone growth.
• ˜impairs the production of blood cells.
• ˜impairs the bone response to parathyroid hormone (PTH). 

The soft, inside part of the spongy bone is called...

• marrow

• blood

• spongebob

• veins

Creates a smooth surface for motion within the joints and protects the ends of bones.

• Cartilage
• Bone Marrow
• Ligaments
• Bursa

Letters a - e represent what?

• an osteocyte
• an osteon
• an osteoblast
• an osteoclast

What does letter b represent?

• lamella
• osteon
• lacuna
• central canal

In children, what is found in the medullary cavity?

• yellow bone marrow
• red bone marrow
• fat storage
• D'lyzazomes

The hollow center of the osteon that contains blood vessels is called?

• lacunae
• lamella
• canaliculi
• central canal

During early growth development, bones are mostly composed of what?

• hyaline cartilage
• osteocyetes
• melanocytes
• dense fibrous tissue

Bone cells that liquefy or dissolve bone matrix and release calcium to the blood are called _________.

• Osteoclasts

• Osteoblasts

• Osteocytes

• Osteobytes