Term Definition
chitin substance made of carbohydrates.
immotile (sessile) can not move, stationary.
locomotion movement.
molt to change the skeleton.
chordates organisms that have a back bone.
endoskeleton inside skeleton.
exoskeleton outside skeleton.
flexor muscles that bend.
ossification the natural process of bone formation.
tendon connect muscles to bones.
ligament connects bone to bone.
axial brain and spinal column.
striated muscle that has lines.
visceral smooth muscles.
extensor arm and legs (the limbs)

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