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Form and Function in Chordates

Form and Function in Chordates. 33-3. Tunicate--filter feeding. Lancelet—filter feeding. Feeding. Shark. Salamander. Lizard. Pigeon. Cow. Esophagus Stomach Intestine Liver Gallbladder Pancreas Cloaca Crop Gizzard Cecum Rectum. Respiration. Respiration.

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Form and Function in Chordates

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  1. Form and Function in Chordates 33-3

  2. Tunicate--filter feeding

  3. Lancelet—filter feeding

  4. Feeding Shark Salamander Lizard Pigeon Cow Esophagus Stomach Intestine Liver Gallbladder Pancreas Cloaca Crop Gizzard Cecum Rectum

  5. Respiration

  6. Respiration Nostrils, mouth, and throat Trachea Lung Air sac Salamander Primate Pigeon Lizard

  7. Respiration Comparing Functions of Chordates Respiration Non- vertebrate Chordates Gills and diffusion Gills/air sacs Simple lungs and skin Lungs Lungs (tubes and air sacs; one-way flow) Lungs (alveoli) Birds Function Fishes Amphibians (adult) Mammals Reptiles Nostrils, mouth, and throat Trachea Lung Air sac

  8. Circulation Double-Loop Circulatory System Single-LoopCirculatory System FISHES CROCODILIANS, BIRDS,AND MAMMALS MOST REPTILES

  9. Circulation Comparing Functions of Chordates Circulation Non- vertebrate Chordates No true chambers Single loop; 2 chambers Double loop; 3 chambers Double loop; 3 chambers Double loop; 4 chambers Double loop; 4 chambers Birds Function Fishes Amphibians (adult) Mammals Reptiles

  10. Excretion Comparing Functions of Chordates Excretion Non- vertebrate Chordates Gills andgill slits Kidney andgills Kidney andgills Kidney Kidney Kidney Birds Function Fishes Amphibians (adult) Mammals Reptiles

  11. Response Comparing Functions of Chordates Response Non- vertebrate Chordates Simple; mass of nerve cells Cephalization; small cerebrum Cephalization; small cerebrum Cephalization; small cerebrum Cephalization; large cerebrum Cephalization; large cerebrum Birds Function Fishes Amphibians (adult) Mammals Reptiles

  12. Limbs stick out sideways; muscles and ligaments Movement Comparing Functions of Chordates Muscles,no bones Movement Muscles on either side of backbone Limbs point directly toward ground; muscles and ligaments Upper limbs are wings; 2 feet; muscles and ligaments 2 or 4 legs; walk with legs straight under them; muscles and ligaments Birds Function Non- vertebrate Chordates Fishes Amphibians (adult) Mammals Reptiles

  13. Internal fertilization: inside the female’s body External fertilization: outside the female’s body External fertilization Reproduction Comparing Functions of Chordates External fertilization Reproduction External fertilization Internal fertilization; shelled egg Internal fertilization; shelled egg Internal fertilization and development Birds Function Non- vertebrate Chordates Fishes Mammals Reptiles Amphibians (adult)

  14. Amphibians (adult) Ectothermic Temperature Control Comparing Functions of Chordates Ectothermic TemperatureControl Ectothermic Ectothermic Endothermic Endothermic Birds Function Non- vertebrate Chordates Fishes Mammals Reptiles Can be controlled by

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