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Chor data. Mammals. Daniel Micheli Sahil Kazmi Shannon De Peralta Period 1. http://artfiles.art.com/images/-/James-Himsworth/Animals-II-Print-C10069671.jpeg. Reproduction/Sample Animals. Prototheria: composed of egg laying mammals. Platypus, echidna

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  1. Chordata Mammals Daniel Micheli Sahil Kazmi Shannon De Peralta Period 1 http://artfiles.art.com/images/-/James-Himsworth/Animals-II-Print-C10069671.jpeg

  2. Reproduction/Sample Animals • Prototheria: composed of egg laying mammals. • Platypus, echidna • Marsupials: young are born tiny and immature and must climb into the mother’s pouch where they grab hold of a teat and do not leave until they are mature. • Kangaroos, koalas, wombats, possums • Eutheria: composed of all the placental mammals, whose young form as embryos in the mother’s stomach. • Dogs, bats, whales, elephants, squirrels, manatees, cows, humans http://www.lelandswallpaper.com/images/bigbord1208.jpg http://thumbs.dreamstime.com/thumb_271/1211275113420yp4.jpg Daniel Micheli

  3. Body Cavity: Coelum - a fluid filled cavity formed within the mesoderm. http://evolution.berkeley.edu/evolibrary/images/symmetrydiagram.gif http://universe-review.ca/I10-82-cavity4.jpg Body Symmetry: Bilateral symmetry- Symmetrical arrangement of an organism or part of an organism along a central axis, so that the organism or part can be divided into two equal halves. Bilateral symmetry is a characteristic of animals that are capable of moving freely through their environments Daniel Micheli

  4. Central Nervous System: Brain (cerebrum, cerebellum), spinal cord http://universe-review.ca/I10-82-circulatory.jpg http://scienceblogs.com/clock/upload/2006/06/nervous%20system.jpg Circulatory System: Four Chambered Heart Sahil Kazmi

  5. Digestive System: Mouth, pharynx, esophagus, stomach, intestine, anus. http://img.tfd.com/mgh/ceb/thumb/Human-digestive-system.jpg Excretory System: Mammals have kidneys, ureter, bladder, and urethra for waste regulation in the body. http://blog.lib.umn.edu/trite001/studyinghumananatomyandphysiology/f27-1al_urinary_system__c.jpg Sahil Kazmi

  6. Locomotion and musculature: Alternate contractions of muscles for backward and forward movement. Limbs Tails Wings http://www.cnr.vt.edu/fisheries/afs/fisheries_techniques/Chapter14/Black%20grub%20in%20the%20fin%20of%20a%20fish.jpg Skeletal Type: Endoskeleton with matrix of calcium phosphate. Most mammals have 7 cervical vertebrae. Shannon De Peralta http://www.earthlife.net/inverts/images/others/vertebrates.jpg

  7. Sensory Structures: very highly developed and specialized organs that are an extension of the central nervous system, with a sole function to take in information and relate it to the brain. Include eyes, nose, mouth, etc. http://www.biologycorner.com/resources/fish_gills.jpg http://3.bp.blogspot.com/_mD3jinJ3a1k/SKr2cA4isWI/AAAAAAAABAc/1g0LfsTXgKs/s400/5-senses.jpg Gas Exchange: Mammals inhale oxygen, exhale carbon dioxide; fish and amphibians use gills Shannon De Peralta

  8. Unique Features/Other Info. Mammals all possess teeth. There are over 5,400 species of Mammals. All Mammals have sweat glands. All living mammals use two bones for hearing. Mammalian brains have a neocortex, a region of the brain exclusive to mammals.

  9. Which of the following phyla contains all vertebrates? • Porifera • Mollusca • Anthropoda • Chordata

  10. Answer:Chordata

  11. Which of the following phyla contains organisms with bilateral symmetry? • Cnidaria • Porifera • Monogeneans • Chordata

  12. Answer:Chordata

  13. Members of which of the following phyla use wings, fins and limbs for locomotion? • Chordata • Platyhelminthes • Nematoda • Mollusca

  14. Answer:Chordata

  15. To what phylum do humans belong? • Echinodermata • Chordata • Annelida • Cnedaria

  16. Answer:Chordata

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