dorsal blood vessel
1. (ARTHROPODA: Insecta)
The posterior heart and anterior aorta.
2. (ECHIURA)
A dorsal tubular blood vessel in the anterior part of the body cavity often associated with the foregut; functioning in the transport of blood anteriorly to the median vessel of the proboscis; sometimes called the heart.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • venous blood vessel — noun a blood vessel that carries blood from the capillaries toward the heart all veins except the pulmonary vein carry unaerated blood • Syn: ↑vein, ↑vena • Derivationally related forms: ↑venous (for: ↑vein) …   Useful english dictionary

  • vertical blood vessel — last vertical blood vessel (the most posterior blood vessel extending from the dorsal aorta to the nephros and used as a reference point in anguilliform larval descriptions) …   Dictionary of ichthyology

  • segmental blood vessel — (ANNELIDA) A blood vessel in the body wall, connecting anteriorly from dorsal to ventral arteries, and posteriorly by plexes around the gut …   Dictionary of invertebrate zoology

  • last vertical blood vessel — the most posterior blood vessel extending from the dorsal aorta to the nephros and used as a reference point in anguilliform larval descriptions …   Dictionary of ichthyology

  • dorsal vessel — 1. The dorsal blood vessel. 2. (SIPUNCULA) see contractile vessel …   Dictionary of invertebrate zoology

  • dorsal lamina — noun : longitudinal membrane in tunicates that projects into the cavity of the branchial sac and is borne by the large median dorsal blood vessel; also : the vessel itself …   Useful english dictionary

  • Dorsal vessel — Dorsal Dor sal, a. [F. dorsal, LL. dorsalis, fr. L. dorsualis, fr. dorsum back; cf. Gr. ?, ?, mountain ridge. Cf. {Dorse}, {Dorsel}, {Dosel}.] 1. (Anat.) Pertaining to, or situated near, the back, or dorsum, of an animal or of one of its parts;… …   The Collaborative International Dictionary of English

  • Dorsal — Dor sal, a. [F. dorsal, LL. dorsalis, fr. L. dorsualis, fr. dorsum back; cf. Gr. ?, ?, mountain ridge. Cf. {Dorse}, {Dorsel}, {Dosel}.] 1. (Anat.) Pertaining to, or situated near, the back, or dorsum, of an animal or of one of its parts; notal;… …   The Collaborative International Dictionary of English

  • Dorsal scapular artery — Artery: Dorsal scapular artery The scapular and circumflex arteries …   Wikipedia

  • dorsal artery — (Order Decapoda): Major unpaired blood vessel arising from posterior end of heart. Extends to posterior end of abdomen and gives rise to series of segmental arteries in abdominal somites (pleomeres). (Syn. dorsal abdominal artery, posterior aorta …   Crustacea glossary

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