Hind angle see anal angle

hind-gut n. [A.S. hindan; gut] The posterior ectodermal portion of the alimentary tract (canal) between the mid-gut and the anus. see proctodeum.

hind head (ARTHRO: Insecta) In Mallophaga, behind the mandibles and antennae.

hindunguis n. [A.S. hindan; L. unguis, claw] (ARTHRO: Insecta) In mosquitoes, the posterior unguis of one of the hindlegs.

hinge n. [ME. heng, hinge] 1. The point of articulation of a moveable joint. 2. (ARTHRO: Insecta) The maxilla, cardo; in mosquitoes, between the upper and lower vaginal lips. 3. (MOLL: Bivalvia) An interlocking toothed device upon which the shells articulate.

hinge ligament Elastic substance interlocking the valves of a bivalve shell.

hinge line 1. (ARTHRO: Crustacea) The middorsal line of junction between two valves of the carapace permitting movement between them. 2. (BRACHIO/MOLL: Bivalvia) The external line of meeting of the brachial and pedicle valves; movement of the shells occurs here; hinge axis.

hingement n. [ME. heng, hinge; L. mentum, tool] (ARTHRO: Crustacea) A collective term for the structures comprising articulations of ostracods.

hinge nodes (ARTHRO: Crustacea) Localized thickening of the right valve hinge.

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