An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.

In terms of the functionality of the endoskeleton, to which group are echinoderms most similar?Multiple choice question.NematodesChordatesArthropods

The endoskeletons of echinoderms and chordates are Multiple choice question.different in terms of function.different in every way.very similar.

The endoskeleton of vertebrates can be made of which of these materials?Multiple select question.cartilagechitinproteinbonecalcium chloride

As members of the class of animals called vertebrates, humans have which characteristics?Multiple select question.They have jointed appendages.They have a skeleton.They have an internal vertebral column.They have an open circulatory system.Cells have cell walls.

An _________ deals with the skeletal structure of the body.