1 / 19

Vertebrate Origins

Vertebrate Origins. Haikouella lanceolata , early Cambrian. Diversity of Chordates. American toad, Bufo americanus. 56,000 species 10 mm to 40 m long Every habitat Large body size. Pronghorn antelope, Antilocarpa americana. Sea squirt, Atriolum robustum.

Jimmy
Télécharger la présentation

Vertebrate Origins

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Vertebrate Origins Haikouellalanceolata, early Cambrian

  2. Diversity of Chordates American toad, Bufoamericanus 56,000 species 10 mm to 40 m long Every habitat Large body size Pronghorn antelope, Antilocarpaamericana Sea squirt, Atriolumrobustum Laughing gull, Larusatricilla Amphioxus (probably Branchiostoma) Eastern box turtle, Terrapenecarolina Shoal chub, Macrhybopsishyostoma

  3. Endostyle-thyroid • Chordate Characteristics • Notochord • Pharynx • Dorsal, hollow nerve cord • Postanal tail • Endostyle-thyroid gland

  4. Endostyle-thyroid • Chordate Characteristics • Notochord • Pharynx • Dorsal, hollow nerve cord • Postanal tail • Endostyle-thyroid gland

  5. Endostyle-thyroid • Chordate Characteristics • Notochord • Pharynx • Dorsal, hollow nerve cord • Postanal tail • Endostyle-thyroid gland

  6. Endostyle-thyroid • Chordate Characteristics • Notochord • Pharynx • Dorsal, hollow nerve cord • Postanal tail • Endostyle-thyroid gland

  7. Endostyle-thyroid • Chordate Characteristics • Notochord • Pharynx • Dorsal, hollow nerve cord • Postanal tail • Endostyle-thyroid gland

  8. How are vertebrates different from other chordates? • ENDOSKELETON: Vertebrae? (actually vertebrae are lacking in hagfishes and rudimentary in lampreys) • 2. Cephalization: Cranium (all sense organs located towad anterior region of body) • 3. Tripartite brain with associated complex, paired sense organs and cranial nerves • 4. Chambered heart: CLOSED circulatory system • Alimentary canal (digestive system) • Specialized organ systems

  9. Body Systems • Integumentary • Hair, skin, nails, sweat glands and sebaceous glands • Protection • Regulates body temperature • Houses sense organs

  10. Body Systems • Muscular • Muscles • FXN: • causes body movement • maintains posture • produces body heat

  11. Body Systems • Skeletal • Bones, cartilage, ligaments • Aids in movements • Support • Protects • Produces blood cells

  12. Body Systems • Digestive System • Mouth, tongue, teeth, salivary glands, esophogus, stomach, liver, sm and lg intestines • Breakdown food and absorbs nutrients • Excretes waste

  13. Body Systems • Respiratory • Lungs and nasal cavity, bronchi • Exchange gases

  14. Body Systems • circulatory • Heart and blood vessels • Transports blood and nutrients thru body

  15. Body Systems • Excretory/ urinary • Kidneys, urinary bladder, urethra • Removes waste from blood • maintain water balance • eliminates urine

  16. Body Systems • Endocrine • Pituitary glands, pancreas thyroid, adrenal gland • Secrete hormones to regulate metabolism

  17. Body Systems • Nervous • Brain, spinal column, sense organs • Respond to stimuli Animation: http://health.howstuffworks.com/adam-200011.htm

  18. Body Systems • Reproductive • Vagina/Penis • Reproduction • Support dev of embyro

More Related