Ch 40 - animal form and function (3 slides per page)

But this constraint be circumvented eg hydra a many

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Unformatted text preview: aint be circumvented… e.g. hydra (A) Many simple animals are flat or designed so that most cells are in contact with external environment e.g. sponge e.g. flatworm Figures 33.4 and 33.10 (Campbell 18 9th Figure 40.3 (Campbell 9th ed) ed) Physical laws constrain form - Complexity • Since: ALL cells must exchange materials with the environment Figure 40.4 (Campbell 9th ed) 19 Physical laws constrain form - Complexity • Since: ALL cells must exchange materials with the environment (B) Complex organisms have: 3. Fluid-filled compartments (B) Complex organisms have: 2. Delivery/ removal systems Interface w/ cells via interstitial fluids e.g. Snail Coelom Mantle Bathe organs in fluid to exchange substances A. Coelom or pseudocoelom B. Hemocoel • In open circulatory system Hemocoel Foot e.g. Nematode Pseudocoelom 20 Hierarchy of Form and Function Figure 33.15 (Campbell 9th ed) 21 Tissue: A group of similar specialized cells that function as a unit Greater size allows/necessitates greater complexity / specialization 2. Connective 1. Epithelial • Cells – many types • Tissues – aggregation of specialized cells • Organs – aggregation of multiple tissues • Organ systems – aggregation multiple organs 4. Nervous 4 ttypes of ypes Animal Tissues Tissues 3. Muscle 22 23 Epithelial Tissue Membranous tissue covering nearly all external and internal body surfaces Epithelial Tissue Membranous tissue covering covers nearly all external and internal body surfaces Morphology 1. Tightly packed ce...
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This note was uploaded on 02/12/2014 for the course BIOLOGY 2011 taught by Professor Woo during the Fall '10 term at University of Central Florida.

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