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Chordata-Amphibians, Reptiles, Birds By Kevin Wei and Scott Cramer Kevin Wei.

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Presentation on theme: "Chordata-Amphibians, Reptiles, Birds By Kevin Wei and Scott Cramer Kevin Wei."— Presentation transcript:

1 Chordata-Amphibians, Reptiles, Birds By Kevin Wei and Scott Cramer Kevin Wei

2 Amphibia Urodela(Salamanders) Anura(Frogs) Apoda(Caecilians) Kevin Wei

3 Reptilia Dinosaurs Lepidosaurs Turtles Alligators and Crocodiles Birds 2008/09/dinosaur-printable-invitation2.jpg Coachella_Valley_Fringe-toed_Lizard.jpg t/2004/images/07/turtle_back.jpg content/uploads/2007/02/images/bird-photography.jpg Kevin Wei

4 Body Cavity Coelomates Peritoneum encloses the coelom Kevin Wei

5 Body symmetry Bilateral Symmetry Kevin Wei

6 Nervous systems Birds: Central Nervous System (Brain and Spinal cord) Three part brain: Smell, Sight, Hearing Scott Cramer

7 Nervous systems Amphibians: Brain and Spinal Cord Two eyes Extra protective eyelid for land use content/gallery/miscellaneous/frog-nervous- system-diagram.jpg Scott Cramer

8 Nervous systems Reptiles: Brain & Spinal Cord Nerves running from both to Sense organs Scott Cramer

9 Circulatory systems Reptiles: Poikilothermic (Cold Blooded) Three Chambered heart Some pythons heart can be 4 Chambered Crocodiles have 4 chambered heart w/ two systemic aortas circulatory.jpg Scott Cramer

10 Circulatory systems Amphibians: Three chambered heart Ectothermic: Cold-Blooded body temperature regulation Some Gills Scott Cramer

11 Circulatory systems Birds: Warm Blooded 4-Chambered heart, left ventricle pumps into body- much bigger Scott Cramer

12 Digestive system Mouth(Beaks), tongue, esophagus, stomach, intestine, rectum Scott Cramer

13 Excretory system Kidneys and ureters to dispose of bodily wastes Scott Cramer

14 Locomotion/Musculature Adult Amphibians-Tetrapods Apodans are legless-burrowing Some larval stages swim(Undulation) Reptiles-Bipedal, Tetrapods, Legless(lateral bending) Birds-Bipedal, Wings, Swim _images/frog_jumping-714039.gif Kevin Wei AMCosaboom/Tadpoles/tadpole.jpg

15 Skeletal type Inner skeletons with backbones Most have two limbs attached to main body Kevin Wei

16 Sensory structures/features Eyes Noses Tongues Touch --(Skin/scales/feathers) Ears Kevin Wei

17 Reproduction Sexual Reproduction-Amphibians(external), Reptiles+Birds(internal) Amniotes(Birds and Reptiles)-Eggs with an extraembryonic membrane(amnion) Amphibian eggs lack an amnion Amnion protects embryo in a fluid-filled cavity Kevin Wei

18 Gas exchange Amphibians-Cutaneous and Pulmonary on land Reptiles+Birds-Pulmonary Kevin Wei

19 Interesting fact Birds are closest relatives of dinosaurs(Grouped as Saurischians) = ? Kevin Wei

20 Quiz True or False: Amphibians are not coelomates A: FALSE Which group is warm-blooded? Amphibians? Reptiles? Birds? A: BIRDS What is the role of the amnion? A: To protect the embryo? Do all amphibians have legs? A: NO Kevin Wei

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