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Science: Chapter 13-4
What are bones?
10
Science
6th Grade
10/03/2008

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Cards

Term

What is the thin membrane

that covers a bone?

Definition
periosteum
Term

What is the mostly solid, dense

part of a bone?

Definition
compact bone
Term
What is the part of a bone with many small pores or spaces?
Definition
spongy bone
Term
What is the soft tissue inside bones that makes blood cells?
Definition

marrow

 

(Red bone marrow is in the spongy bone.)

Term
What is a crack or break in a bone?
Definition

fracture

 

open fracture - bone breaks through the skin

closed fracture - bone does not break the skin

hairline fracture - very thin crack in the bone

Term

How many bones are in the

adult human skeleton?

Definition
206
Term

Where are the 3 smallest bones

in your body?

Definition
in your ear
Term

Where is the   l o n g e s t  

bone in your body?

Definition
in your   t h i g h
Term
What is the job of the periosteum?
Definition

It has many blood vessels that carry food molecules and oxygen to

bone cells.

Term

What mineral makes

compact bones hard?

Definition

calcium (Ca)

 

Dairy products have a lot of calcium.

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