Thursday 8 March 2012

Frogs: Anatomy

Frogs have a very unique anatomical structure. One example of their special anatomy is their long, sticky tongue which is their way of capturing food. Their tongue is more important than you think, because their teeth are very weak and pretty useless for food capturing purposes. Their legs are also highly specialised for leaping and jumping both high and far distances.

Frogs have a very particular way of breathing. Their skin is porous skin which allows oxygen from the water to go straight into their blood stream. They also have a pair of lungs to allow them to breath outside water.

Unlike humans frogs only have three valves in their hearts. They have two atria and one ventricle. The valves in their hearts are called spiral valves. These control the direction of the flow of blood, to stop oxygenated blood mix with the de-oxygenated blood.

A frog has the ability to hear very high pitched sounds through their ears, but, they can also hear low pitched sounds through their skin.

The frog's sense of sight and smell are very developed. A frog's eyes can detect predators and prey because they protrude very far from the frog's head. By chemical signals, the frog uses their sense of smell to detect possible food sources.




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