Dorsal vessel

(Zool.) a central pulsating blood vessel along the back of insects, acting as a heart.

See also: Dorsal

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Dorsal vessel single throughout, ventral vessel present, subneural vessel absent.
Dorsal vessel single throughout, supraesophageal visible only in 10-13.
The major organ of the roach circulatory system is the dorsal vessel. Careful removal of the digestive tract and fat body will expose the dorsal vessel (Figure 6).
The amount of oxygen within the ventral vessel remains the same along the longitudinal body axis as blood leaks from the ventral vessel through the trophosome to the dorsal vessel. Since the bacterial mass increases from anterior to posterior in the trophosome of S.
Benefts of this approach include increased control of the small proximal fragment, which is often difficult to target from the volar approach, a decreased risk of proximal pole displacement, and access to dorsal vessels that are optimal for vascular grafts.
The entry site of the dorsal vessels can be variable.
The scaphoid bone receives the majority of its blood supply from dorsal vessels just distal to an area in the middle of the bone often referred to as the waist of the scaphoid bone.