C

calcium

a basic element found in plants and animals

cartilage

a strong fibrous material connecting joints

E

elastic

stretchy

exoskeleton

a strong external covering on some animals

F

feature

characteristic or property

fibrous

containing fibers

I

invertebrates

animals having no vertebrates or bones

M

marrow

center of bone material; creates blood and platelets

minerals

inorganic natural matter

P

protect

keep safe

S

series

a group of things in a particular order

spine

backbone

support

keep strong or in place

T

tendons

a fibrous tissue that attaches bones to muscles

tissues

groups of cells of the same type in living organisms

V

vertebrate

animals with backbones