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Essential Vocabulary

Essential Vocabulary. Essential Vocabulary. Notochord – long supporting rod that runs through a chordate’s body just below the nerve cord. Essential Vocabulary. Pharyngeal slits – structures in the throat (pharynx) region that develop into gills that are used for gas exchange.

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Essential Vocabulary

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  1. Essential Vocabulary

  2. Essential Vocabulary • Notochord– long supporting rod that runs through a chordate’s body just below the nerve cord.

  3. Essential Vocabulary • Pharyngeal slits – structures in the throat (pharynx) region that develop into gillsthat are used for gas exchange.

  4. Essential Vocabulary • Metabolism – all the chemical reactions that occur within an organism. • Ectothermic - animal that has a variable body temperature and derives its heat from external sources.

  5. Essential Vocabulary • Endothermic – animals maintain a constant body temperature and is not dependent on the environmental temperature.

  6. Essential Vocabulary • Oviparous – mammals that produce eggs that mature and hatch after being expelled from the body. The monotremes Spiny Anteater: Echidnas

  7. Essential Vocabulary • Ovoviviparous – mammals producing eggs that are hatched within the body, so that the young are born alive but without placental attachment. The Marsupials

  8. Essential Vocabulary • Viviparous – mammals that have living young rather than eggs. The placental mammals.

  9. Essential Vocabulary • Embryology – the study of the development of embryos. • Primates – omnivorous mammals of the order Primates comprising humans, great apes, gibbons, etc.

  10. Essential Vocabulary • Osmosis – movement of water across a semi-permeable membrane • Excretion – discharge of waste matter such as urine and sweat through the kidneys and skin.

  11. Evolution of Jaws Evolution of Jaws, Part 1

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