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  2. Hydrostatic skeleton - Wikipedia

    en.wikipedia.org/wiki/Hydrostatic_skeleton

    Many animals with a wormlike cylindrical body have a hydrostatic skeleton with a flexible skin and a water-filled body cavity (coelom or pseudocoelom). They move by peristalsis, using opposed circular and longitudinal muscles, which act on the hydrostatic skeleton to change the body's shape. Hydrostatic skeletons are typically arranged in a ...

  3. Category:Animal anatomy - Wikipedia

    en.wikipedia.org/wiki/Category:Animal_anatomy

    Alemannisch; Anarâškielâ; العربية; Aragonés; অসমীয়া; Asturianu; Azərbaycanca; বাংলা; 閩南語 / Bân-lâm-gú; Башҡортса

  4. Limb (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Limb_(anatomy)

    A limb (from Old English lim, meaning "body part") is a jointed, muscled appendage of a tetrapod vertebrate animal used for weight-bearing, terrestrial locomotion and physical interaction with other objects. The distalmost portion of a limb is known as its extremity.

  5. Parts of Animals - Wikipedia

    en.wikipedia.org/wiki/Parts_of_Animals

    It was written around 350 BC. The whole work is roughly a study in animal anatomy and physiology; it aims to provide a scientific understanding of the parts (organs, tissues, fluids, etc.) of animals and asks whether these parts were designed or arose by chance.

  6. Anatomy - Wikipedia

    en.wikipedia.org/wiki/Anatomy

    Macroscopic anatomy, or gross anatomy, is the examination of an animal's body parts using unaided eyesight. Gross anatomy also includes the branch of superficial anatomy . Microscopic anatomy involves the use of optical instruments in the study of the tissues of various structures, known as histology , and also in the study of cells .

  7. Endoskeleton - Wikipedia

    en.wikipedia.org/wiki/Endoskeleton

    A true endoskeleton is derived from mesodermal tissue. In three phyla of animals, Chordata, Echinodermata and Porifera (), endoskeletons of various complexity are found.An endoskeleton may function purely for structural support (as in the case of Porifera), but often also serves as an attachment site for muscles and a mechanism for transmitting muscular forces as in chordates and echinoderms ...

  8. Decapod anatomy - Wikipedia

    en.wikipedia.org/wiki/Decapod_anatomy

    The decapod (crustaceans, such as a crab, lobster, shrimp or prawn) is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon . [1] [2] Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail:

  9. Forelimb - Wikipedia

    en.wikipedia.org/wiki/Forelimb

    In bipedal animals with an upright posture (e.g. humans and some other primates), the term upper limb is often used. A forelimb is not to be confused with a forearm, which is a distal portion of the human upper limb between the elbow and the wrist. All vertebrate forelimbs are homologous, meaning that they all evolved from the same structures.

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