Manatees

Chris Chapman Dr. K ben Keane-Hines Anatomy &Physiology II MANATEE Long past manatees were mis meditaten for mermaids or sirens-luring sailors to their deaths on rocky shores. So the coiffure 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. all(a) support front flippers and a solid, flat, paddle molded tail. An new(prenominal) related to species, the Dugong, has a fluked tail. One species, the Stellar’s Sea Cow, was run to extinction in 1768- exclusively 27 eld afterwards it was discovered. It was the largest and the safe and sound manatee species to equal in sub-Arctic waters. They originated near 45-50 one million million million years ago and their closest living relatives be the elephant, anteater and hyrax-a gopher sized mammal. They use their short snouts homogeneous an elephant system and their flippers confine toe nails very similar to elephant toes, ( pretermit the Amazonian). The just males adopt 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 present galore(postnominal) unique anatomical characteristics.

A vast 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 separate mamm als with hollow bones that produce marrow an! d RBC’s, manatees have a dense and relatively heavy skeleton-their ribs and all long bones are solid to help them sink to the social class to assist in eating. Marrow production is mostly aquiline 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: OrderCustomPaper.com

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