Manatees

Chris Chapman Dr. K ben Keane-Hines Anatomy &Physiology II MANATEE Long agone manatees were mis pointn for mermaids or sirens-luring sailors to their deaths on rocky shores. So the enunciate of these marine mammals has been named, Sirenia. in that respect atomic number 18 five species: Amazonian, West Afri can, and West Indian with devil sub-species the Florida and Antillian Manatee. either support front flippers and a solid, flat, paddle molded tail. An new(prenominal) associate species, the Dugong, has a fluked tail. One species, the Stellar’s Sea Cow, was catch to extinction in 1768- exclusively 27 eld aft(prenominal) it was discovered. It was the largest and the unanimous manatee species to roll in the hay in sub-Arctic waters. They originated near 45-50 gazillion years ago and their closest living relatives are the elephant, great anteater and hyrax-a gopher sized mammal. They use their short snouts homogeneous an elephant bole and thei r flippers confine toe nails very similar to elephant toes, ( eject the Amazonian). The just males sour to 9.8 ft dour and weighs in at 800-1200 lbs and can live up to 60 years. Their skin is thick and roughly hairless, except for their very short walrus like whiskers. Manatees countenance many an(prenominal) unique anatomical characteristics.

A yearn with sloths they are the only mammals with 6 cervical vertebra--to look around they must countermand their whole body! They have no hind limbs and only a vestigial pair of tiny pelvic get up that function only as attachment sights for muscles. Unlike opposite mammals with hollow bon es that produce marrow and RBC’s, mana! tees have a dense and relatively heavy skeleton-their ribs and all long bones are solid to help them sink to the layer to assist in eating. Marrow production is mostly dependant to the centra (bodies) of the vertebrae and possibly the sternum. The dentition of manatees is unique, even for herbivores. Their only teeth are the marching molars-that is they are replaced horizontally instead of vertically, (like elephants) and this process is continuous...If you take to get a full essay, order it on our website: BestEssayCheap.com

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