Bones and the Skeleton

What You'll Learn

Bones make up the skeleton, which supports the body, protects organs, and works with muscles to create movement. Adults have 206 bones, while babies are born with about 270.

Key Words

receptor
stimulus

Steps

Step 1 — Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 — Do

Investigate fingerprints: press your fingertips on an ink pad and stamp them on paper. Classify each as a loop, whorl, or arch.

Step 3 — Observe

Note any unexpected results and think about why they happened.

Step 4 — Record

Share your findings with the class or a partner and discuss what you learned.

Check Your Understanding

Question 1

1 of 3

How do muscles work to move bones?