| A | B |
|---|
| Hard | dense bone tissue that is beneath the outer membrane of a bone. (p. 522) |
| A body tissue that covers the surfaces 'Of the body | inside and out. (p. 510) |
| The soft | connective tissue that fills the internal spaces in bone. (p. 522) |
| For a lever | the ratio of the resistance force to the effort force. (p. 536) |
| A body tissue that contracts or shortens | making body parts move. (p. 510) |
| The reaction of a person's | body to a potentially threatening |
