skelton and the frog's skelton system

The morphology of frogs is unique among amphibians. Compared with the other
two groups of amphibians, (salamanders and caecilians), frogs are unusual
because they lack tails as adults and their legs are more suited to jumping than
walking. The physiology of frogs is generally like that of other amphibians (and
differs from other terrestrial vertebrates) because oxygen may pass through their
highly permeable skin.
This unique feature allows frogs to "breathe" largely through their skin. Because
the oxygen is dissolved in an aqueous film on the skin and passes from there to
the blood, the skin must remain moist at all times; this makes frogs susceptible to
many toxins in the environment, some of which can similarly dissolve in the layer
of water and be passed into their bloodstream. This may be a cause of the decline
in frog populations.

What is skeletal system?

consists of bone and cartilageserves as the framework of the body supports and
protects organs
provides attachment for the muscles.
The skeletal system performs many functions which include:
1. Support the body.
2. Protect vital organs such as the heart.
3. Move the body.
Divisions of the skeletal system.
The frog skeletal system is divided into two regions the axial skeletal system and
the appendicular system.

The axial skeleton consists of the skull, vertebral column, and sternum.

The appendicular system consists of the pectoral girdle, forelimbs, the pelvic
girdle,...