enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Antenna (zoology) - Wikipedia

    en.wikipedia.org/wiki/Antenna_(zoology)

    The three basic segments of the typical insect antenna are the scape or scapus (base), the pedicel or pedicellus (stem), and finally the flagellum, which often comprises many units known as flagellomeres. [10] The pedicel (the second segment) contains the Johnston's organ which is a collection of sensory cells. [11]

  3. Nephridium - Wikipedia

    en.wikipedia.org/wiki/Nephridium

    In Crustacea, the saccate metanephridia are associated with the antennae and form the antennal gland. In freshwater crustacea, the saccate metanephridia are especially large due to their role in osmoregulation; crustacea must remove large amounts of water from the tissues, as the cells are hypertonic to the surrounding water.

  4. Coxal gland - Wikipedia

    en.wikipedia.org/wiki/Coxal_gland

    Coxal gland and its components. The coxal gland is a gland found in some arthropods, for collecting and excreting urine. They are found in all arachnids (with the exception of some Acari), and in other chelicerates, such as horseshoe crabs. [1] The coxal gland is thought to be homologous with the antennal gland of crustaceans.

  5. Johnston's organ - Wikipedia

    en.wikipedia.org/wiki/Johnston's_organ

    In the mosquito, the Johnston's organ houses ~15 000 sensory cells in males, [8] comparable to that in the human cochlea, [9] and approximately half as many in females. [10] Distinct populations of neurons are activated differently by deflections of antennae caused by gravity or by vibrations caused by sound or air movement.

  6. Insect morphology - Wikipedia

    en.wikipedia.org/wiki/Insect_morphology

    The salivary glands (element 30 in numbered diagram) in an insect's mouth produce saliva. The salivary ducts lead from the glands to the reservoirs and then forward through the head to an opening called the salivarium, located behind the hypopharynx. By moving its mouthparts (element 32 in numbered diagram) the insect can mix its food with saliva.

  7. Malpighian tubule system - Wikipedia

    en.wikipedia.org/wiki/Malpighian_tubule_system

    Malpighian tubules are slender tubes normally found in the posterior regions of arthropod alimentary canals. Each tubule consists of a single layer of cells that is closed off at the distal end with the proximal end joining the alimentary canal at the junction between the midgut and hindgut. Most tubules are normally highly convoluted.

  8. Statocyst - Wikipedia

    en.wikipedia.org/wiki/Statocyst

    Drawing of the statocyst system Statocysts (ss) and statolith (sl) inside the head of sea snail Gigantopelta chessoia. The statocyst is a balance sensory receptor present in some aquatic invertebrates, including bivalves, [1] cnidarians, [2] ctenophorans, [3] echinoderms, [4] cephalopods, [5] [6] crustaceans, [7] and gastropods, [8] A similar structure is also found in Xenoturbella. [9]

  9. Mushroom bodies - Wikipedia

    en.wikipedia.org/wiki/Mushroom_bodies

    Historically, it was believed that only insects had mushroom bodies, because they were not present in crabs and lobsters. However, their discovery in the mantis shrimp in 2017 lead to the later conclusion [2] that the mushroom body is the ancestral state of all arthropods, and that this feature was later lost in crabs and lobsters.