Name the three major skeleton differences between humans and frogs

When comparing the skeletal structures of humans and frogs, there are three major differences that stand out:

1. Structure of Limbs: One of the most notable differences is in the structure of limbs. Humans have arms and legs that have a distinct upper and lower bone structure with a clear separation. In contrast, frogs have limbs that are adapted for jumping, featuring longer hind limbs with elongated bones and webbed digits, enabling them to push off the ground more effectively.
2. Vertebral Column: The vertebral column, or spine, varies significantly between the two species. Humans possess a more complex spine with a total of 33 vertebrae that provide both support and flexibility for upright walking. Frogs, on the other hand, have a fewer number of vertebrae, typically around 9, which are fused together to provide stability for their bodies while swimming and leaping.
3. Ribcage Formation: In humans, the ribcage is well-developed and plays a crucial role in protecting internal organs and aiding in respiration. Humans have a total of 12 pairs of ribs that create a solid structure around the thoracic cavity. Frogs, however, have a much less developed ribcage; they possess fewer ribs that are not as complete, as their breathing mechanism is different and less reliant on a robust ribcage.

These differences reflect the varied lifestyles and evolutionary adaptations of each species, with humans being adapted for bipedal locomotion while frogs are designed for jumping and swimming.