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Animal External Anatomy

Animal External Anatomy. Animal External Anatomy. There are four characteristics of the external anatomy of animals that you will consider: Body covering Symmetry Body Plan Appendages. Animal External Anatomy. 1. The body covering may be one of three kinds: A. _____ covering:

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Animal External Anatomy

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  1. Animal External Anatomy

  2. Animal External Anatomy There are four characteristics of the external anatomy of animals that you will consider: • Body covering • Symmetry • Body Plan • Appendages

  3. Animal External Anatomy 1. The body covering may be one of three kinds: A. _____ covering: • a hard _____ secreted by the mantle of mollusks for protection • the calcium _____ that form the spiny skins of echinoderms. Calcium shell plates

  4. Animal External Anatomy 1. The body covering may be one of three kinds: B. _______ covering - such as the _________ in the arthropoda Chitinous exoskeleton

  5. Animal External Anatomy 1. The body covering may be one of three kinds: C. Soft ______ – no hard covering is present as in ____ cuticle worms

  6. Animal External Anatomy 2. Symmetry - the way an animal's ____ ____ are arranged: body parts A. Bilateral B. Radial C. Asymmetrical

  7. Animal External Anatomy 2. Symmetry • ______ symmetry is exhibited by moths and man. Our bodies can be divided down the middle to give similar right and left halves. Mirror images are formed. Bilateral

  8. Animal External Anatomy 2. Symmetry Most bilaterally symmetrical animals also have body directions or surfaces. Upper surface, or back, - _____ Lower surface, or bottom, - ______ Side or _______ surface dorsal ventral lateral

  9. Animal External Anatomy 2. Symmetry Most bilaterally symmetrical animals also have body directions or surfaces. • Head end - _____ • Hind end - ______ anterior posterior

  10. Animal External Anatomy 2. Symmetry _________ is another adaptation that most bilaterally symmetrical animals exhibit. Cephalization means that the sense organs are located in the _____ end of the animal. Cephalization anterior

  11. Animal External Anatomy 2. Symmetry B. _____ symmetry is organized in a ______ pattern and can be divided ____ times. A _____ has pentaradial symmetry. A ____ has radial symmetry. Radial circular many starfish hydra

  12. Animal External Anatomy 2. Symmetry C. An animal that does not exhibit any symmetry is _________. Some _____ have asymmetry. asymmetrical sponges

  13. Animal External Anatomy 3. Body Plan A. Shape – ____ or_______ flat cylindrical

  14. Animal External Anatomy B. Segmentation –________(several of the same structure in a series) or _________ segmented unsegmented

  15. Animal External Anatomy 4. Appendages – extensions from an animal’s body: A. B. C. D. arms and legs antennae tail

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