Exam 29: Support, Protection, and Movement

Is there a limit to the size of animal that can evolve? Why are certain mechanical advantages not available to animals larger than a horse?

Bone growth involves its destruction internally by bone resorbing cells called

What is the effect of body size on bone stress? Does it appear reasonable,as recent research claims,that Tyrannosaurus rex could not run because of this size and stress limitation? Explain your line of reasoning.

The functional unit of a myofibril is the __________.

In crustaceans,the cuticle is stiffened by the deposition of _____________ _________________.

The first two cervical vertebrae are the ___________ and the axis.

A grasshopper can jump a height of 50 times the length of its body.Yet,muscles of small and large animals exert the same force per cross-sectional area.Explain how the grasshopper can still jump a relatively greater distance than can a human.

Hyaline cartilage contains

Define the following terms: keratin,keratinization,cornification,stratum corneum,dermis,epidermis.