Thursday, January 5, 2012

video

http://www.arkive.org/nile-crocodile/crocodylus-niloticus/video-08e.html

other unique information

The largest nile crocodile in africa is 20 feet in lenght and it weights more then 1650 pounds. About 200 people die in the jaws of these animals each year.

digestive system

The lay out of the digestive system starts in the mouth and its salivary glands. Next the food goes down the esophagus to the stomach. After that the food goes to the intestine and then out the cloaca.

respiratory system

the lungs of the nile crocodile are increased in size due to the development of partitions, in turn, have alveoil. the exchange of gases is increased by the surface area the respiration is more efficent.

reproductive system

The female is mature at the age 12-14 years. She will lay about 50 eggs at one time. After she digs a hole in the ground. After she has laid her egg she return to the water. She guards the nest for three months and then the hatchling call to they mother and she comes to get them to return them to the water for safety. She will care for them for the next six months.

external

integumentary system

The crocodile has rough dry scales that cover the whole body of the this reptile. They have their nose on the top of they head so they can swim for long periods of time. Their eye lids have a flap in them to see under the water and at night.

nervous system

They have a brain that connects to the spinal cord and then that is connected to the sense organ in the crocodile's body.
reptile:

Tuesday, January 3, 2012

skeleton/muscular system

 they have unique organs that are muscular such as the liver.

circulatory system

nile crocodile

kingdom: animalia
phlyum: chordata
class: reptilia
superorder: crocadlylomorpha
order: crocodylia
family:crocodylidae
subfamily:crocodylin
genus:crocodylus
species: niloticus