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Comparative anatomy


Comparative anatomy studies similarities and differences in organisms. ... 1 History; 2 See also; 3 Footnotes; 4 References; 5 External links ... as well as the comparisons between the skeletons of ...

Organisms respond to changes in their internal and external ... - AQA


3.6 Organisms respond to changes in their internal and external environments ... The protective effect of a simple reflex, exemplified by a three-neurone simple reflex. ... Muscles act in antagonistic pairs against an incompressible skeleton.

Extracellular Matrix Signaling from the Cellular Membrane Skeleton ...


Sep 10, 2010 ... However, how cells receive and integrate external signals leading to gene ... and the presence of DNA response elements (exemplified by BCE-1, ... 1995) and gene regulation in adult organisms (Bissell and Hall, 1987; ...

muscle | Britannica.com


Sep 9, 2014 ... Striated muscle is almost exclusively attached to the skeleton and constitutes the ... Unicellular organisms, simple animals, and the motile cells of complex ..... the cylindrical tentacled polyp, exemplified by the hydra and the sea anemone, ..... Superficially lies the external oblique muscle, with fibres running ...

Chapter Outline - McGraw Hill Higher Education


Animals Depend on Other Organisms for Nourishment ... Exemplified by two phyla. Cnidaria: Hydroids .... May form hard internal or external skeleton. Medusa : ...

PDF(1411K) - Wiley Online Library


eukaryotic organisms, and a study of their detailed struc- ture has .... exemplified by the alternative phylogenetic solutions pre- ..... External cilia otherwise are found ..... symmetry; mesodermal calcite skeleton evolves; larval telotroch dis-.

"Invertebrate Skeletons". In: Encyclopedia of Life Science


and locomotion; the skeleton provides an external force or framework to ... exemplified by vertebrate bones but also present in a few .... of other organisms.

Environmental Constraints on the Mechanics of Crawling ... - Springer


Aug 19, 2010 ... ing and burrowing by limbless organisms using hydrostatic skeletons depend on the medium and mode in which the organism is moving. Whether the .... properties, forces, and components of external work. Differ- ences in ..... sands, is exemplified by the mole crab, Emerita, that burrows very quickly into ...



A. Animals Depend on Other Organisms for Nourishment. 1. Feed directly or ... Exemplified by two phyla .... 3) May form hard internal or external skeleton b.

Glossary: A - M - The California Garden Web


Arthropods: Invertebrate organisms of the animal kingdom that include insects, spiders, and Crustacea; organisms characterized by an external skeleton and legs with ..... Genetic dwarfs are best exemplified in peaches and nectarines.

Helpful Resources

Organisms with external skeletons are exemplified by - Answers.com


Organisms with external skeletons are exemplified by? Organisms with external ... Do amphibians have an internal or external skeleton? Frogs have an internal ...

What is an external skeleton? - Ask.com


An external skeleton, commonly referred to as an exoskeleton, is an external covering ... Organisms with External Skeletons Are Exemplified by · Define External ...

What is an internal skeleton known as? - Ask.com


A skeleton that is internal is known as an endoskeleton. ... with External Skeleton · Organisms with External Skeletons Are Exemplified by · Internal Fertilization ...

Pattern of life : Nature News


May 30, 2000 ... ... external skeletons (exoskeletons) that enclose their soft bodies. Single-celled organisms called radiolarians and diatoms make these protective ... Another common patterning method in nature is exemplified by the stripes or ...

Biological Diversity 9 - Estrella Mountain Community College


Coelomates also form a variety of internal and external skeletons. ... Deuterostomes (as exemplified by the echinoderms and chordates) develop the anus first, ...