Skeleton System

Where can you find the periosteum?

• on outermost portion of bones
• innermost portion of bones
• between layers of spongy bones
• in hollows of bones

Which term best describes compact bone?

• spongy
• flexible
• rigid
• liquid

What fills the hollows of most bones?

• bone blood
• bone marrow
• spongy bone
• compact bone

What advantage do we gain from the fact that bones are hollow?

• we can move around easily
• our bones don't fracture easily
• our bones make marrow easily
• our organs receive more support

What is the main function of bone marrow?

• supporting internal organs
• keeping the spine straight
• storing minerals
• producing blood cells

What does the cartilage between bones do?

• allows the nerves on adjacent bones to communicate with one another
• provides padding and protection against wear and tear
• prevents bones from overheating
• prevents bones from becoming too rigid

What can you infer form the fact that babies have more bones than adults?

• adults suffer from bone loss
• teenagers also have more bones than adults
• babies shed bones as they grow
• some of babies' bones fuse together as they grow

What do tendons do?

• attach skin to bones
• attach muscles to bones
• provide support for organs
• attach bones to other bones

The spine is made up of little ring-shaped bones called:

• vertebrates
• verdigris
• vertigo
• vertebrae

What might happen if your spine were perfectly straight?

• walking would be uncomfortable
• sitting would be uncomfortable
• lying down would be uncomfortable
• standing upright would be uncomfortable