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General Biology:CH40-48 Animal Form, Function, and Nervous System

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  • What is the relationship between animal form and function?

    Anatomy is the biological form of an organism, and physiology is the biological function.

  • What limits the size and shape of animals?

    Physical laws governing strength, diffusion, movement, and heat exchange limit animal size and shape. Properties of water also limit shapes for fast swimming animals.

  • What is convergent evolution in animals?

    Convergent evolution is the independent evolution of similar features in species of different periods.

  • What are the four main categories of animal tissues?

    Epithelial, Connective, Muscle, and Nervous tissues,

  • How do the endocrine and nervous systems differ in communication?

    The endocrine system transmits hormones slowly through blood affecting multiple regions, while the nervous system transmits fast nerve signals between specific locations.

  • What is homeostasis in animals?

    Homeostasis is maintaining a steady internal state despite external environmental changes, using feedback mechanisms.

  • What is negative feedback in homeostasis?

    Negative feedback reduces the original stimulus to return a variable to its set point, e.g., body temperature regulation.

  • What are endotherms and ectotherms?

    Endotherms generate heat metabolically to maintain body temperature; ectotherms gain heat from the environment.