Learn Human Body - Skeleton System

BONES ON THE OUTSIDE?

Some animals unlike humans have their skeletons on the outside. Shells you find on the beach are examples on these animals. Such shells used to have animals living in them, and those shells protected the animals inside from external threats. An example on an animal that has a shell on the outside is the crab.

Questions:

1. What is a function of the outside skeleton for the animals that have it?
2. other than the crab, can you think of an animal that has its skeleton outside?
3. Do humans have any bones on the outside?

References:

Lievesley, T. & Herridge, D. (2003) Heinemann Explore Science Pupil book. Heinemann Oxford: Educatinal Publishers. 5-18

crab pic retrieved from:(http://media.merchantcircle.com/33263661/a008-cartoon-crab-clipart_medium.png)

What is a skeleton?

It is you bony friend that supports your body. The skeleton works as a frame that gives shape to the whole body and without it the body is like shapeless jelly. Bones are essential for movement , and as you grow they grow with you.

Questions:

1. What is a function of the human skeleton?
2. Without a skeleton how would the body look like?
3. Your arm bone would still be the same size now as you were 3 years old?

References:

Lievesley, T. & Herridge, D. (2003) Heinemann Explore Science Pupil book. Heinemann Oxford: Educatinal Publishers. 5-18

Skeleton image retrieved from:http://acccn.net/Bio/book/Attic21/Anatomy/AnatPics/skeleton.gif