prothoracic glands


prothoracic glands
(ARTHROPODA: Insecta)
Specialized endocrine glands of larvae consisting of a pair of diffused glands at the back of the head, the thorax, or at the base of the labium producing the molting hormone (ecdysone); usually breakdown after the final molt; thoracic glands; pericardial glands; ecdysial glands; ventral glands.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • prothoracic gland — either of a pair of endocrine glands in the anterior thorax of some insects, functioning to promote the series of molts from hatching to adulthood. [1885 90] * * * …   Universalium

  • prothoracic gland — prothorac′ic gland n. anat. ent either of a pair of endocrine glands in the thorax of some insects, functioning to promote molting • Etymology: 1885–90 …   From formal English to slang

  • prothoracic gland — noun : one of a pair of thoracic endocrine organs in some insects that control molting * * * either of a pair of endocrine glands in the anterior thorax of some insects, functioning to promote the series of molts from hatching to adulthood. [1885 …   Useful english dictionary

  • ecdysial glands — see prothoracic glands …   Dictionary of invertebrate zoology

  • thoracic glands — see prothoracic glands …   Dictionary of invertebrate zoology

  • lepidopteran — /lep i dop teuhr euhn/, adj. 1. lepidopterous. n. 2. a lepidopterous insect. [1850 55; LEPIDOPTER(A) + AN] * * * Any of the more than 100,000 species constituting the order Lepidoptera (Greek: scaly wing ): butterflies, moths, and skippers. The… …   Universalium

  • dormancy — /dawr meuhn see/, n. the state of being dormant. [1780 90; DORM(ANT) + ANCY] * * * ▪ biology Introduction       state of reduced metabolic activity adopted by many organisms under conditions of environmental stress or, often, as in winter, when… …   Universalium

  • gland — An organized aggregation of cells functioning as a secretory or excretory organ. SYN: glandula (1) [TA]. [L. glans, acorn] accessory g. a small mass of glandular structure, detached from but lying near another and larger g., to which it is… …   Medical dictionary

  • endocrine system — Group of ductless glands that secrete hormones necessary for normal growth and development, reproduction, and homeostasis. The major endocrine glands are the hypothalamus, pituitary, thyroid, islets of Langerhans, adrenals, parathyroids, ovaries …   Universalium

  • Insect physiology — includes the physiology and biochemistry of insect organ systems. Although diverse, insects are quite similar in overall design, internally and externally. The insect is made up of three main body regions (tagmata), the head, thorax and abdomen.… …   Wikipedia

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