Ozopore the Sclerosomatidae secrete short-chain acyclic ketones and alcohols, and the Phalangiidae, naphthoquinones. In millipedes, ozopores are repeated serially on body segments, and usually situated laterally. Exceptions are members of the order Glomerida, which have ozopores located dorsally. Some members of the order Julida have especially prominent ozadenes. Ozopore An ozopore is the opening of a defensive gland present in some arthropods, notably in millipedes of the order Polydesmida and in harvestmen, the eight-legged arachnids also known as "daddy long-legs". The glands themselves are known as ozadenes, also called "scent glands", "repugnatorial glands", "odoriferous glands" or "stink glands" by various authors.
Bird feet and legs the rear like the propeller on a motorboat. Grebes and many other waterfowl have shorter femur and a more or less narrow pelvis, too, which gives the impression that their legs are attached to the rear as in loons. Because avian forelimbs are wings, many forelimb functions are performed by the bill and hindlimbs. It has been proposed that the hindlimbs are important in flight as accelerators when taking-off. Some leg and foot functions, including conventional ones and those specific to birds, are: Typical toe arrangements in birds are: The most common arrangement is the anisodactyl foot, and second among