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Topics related to "Dorsal"

carapace
carapace , shield, or shell covering, found over all or part of the anterior dorsal portion of an animal. In lobsters, shrimps, crayfish, and crabs, the carapace is the part of the exoskeleton that covers the head and thorax and protects the dorsal and lateral surfaces. In many crustaceans, the term... Read more
ass
ass Wild, speedy, long-eared member of the horse family found in African and Asian desert and mountain areas. Smaller than the horse, it has a short mane and tail, small hoofs and dorsal stripes. The three African races (species Equus asinus) are the Nubian, North African and the rare Somali. Heigh... Read more
Kasserine Pass
Kasserine Pass , gap, 2 mi (3.2 km) wide, central Tunisia, in the Grand Dorsal chain (an extension of the Atlas Mts.). A key point in the Allied offensive in Tunisia in World War II, the pass was the scene of an Axis breakthrough (Feb. 20, 1943), but it was retaken with very heavy losses by U.S. for... Read more
thorax
thorax body division found in certain animals. In humans and other mammals it lies between the neck and abdomen and is also called the chest. The skeletal frame of the thorax is formed by the sternum (breastbone) and ribs in front and the dorsal vertebrae in back. Within the thoracic cavity are the... Read more
bonefish
bonefish common name for a fish belonging to either of two species of the family Albulidae. Albula vulpes is widespread in warm, shallow marine waters, and Dixonina nemoptera is found only in the West Indies. The bonefish is silvery in color, with a long, deeply forked tail and a single dorsal ... Read more
fin
fin An appendage of fish and fish-like aquatic animals used for locomotion, steering, and balancing of the body. The skin fold forming the fin membrane is supported by cartilaginous, horny, or bony fin rays, which can be soft and flexible (soft rays) or hard and inflexible (fin spines). The median u... Read more
mojarra
mojarra , common name for a member of the family Gerridae, small tropical food fishes. The many American species are found chiefly off the S Atlantic coast but also along the Pacific coast. Mojarras are rarely over a foot (30 cm) in length and are silvery in color. The fins can be retracted into spe... Read more
Chaetognatha
Chaetognatha , phylum of predominantly pelagic marine animals commonly known as arrowworms. Arrowworms have slender, transparent bodies, usually under 1 in. (2.5 cm) long. Lateral and caudal fins propel the animal in sudden darting movements. The well-developed head bears eyes and other sense organs... Read more
sailfish
sailfish common name for a marine game and food fish belonging to the family Istiophoridae and related to the swordfish and the marlin . It is named for its high, wide dorsal fin, colored deep blue with black spots. Like the marlin it has a pikelike upper jaw and small scales embedded in its ski... Read more
trilobite
trilobite , subphylum of the phylum Arthropoda that includes a large group of extinct marine animals that were abundant in the Paleozoic era. They represent more than half of the known fossils from the Cambrian period. The trilobite body was generally oval and flat and was divided into three rough... Read more

Encyclopedia entries related to "Dorsal"

central nervous system
Book article from: The Oxford Companion to the Body ...For each vertebra, on each side of the cord is a dorsal root (‘dorsal’ means on the top), containing sensory...bodies for these fibres are in swellings on the dorsal roots ( dorsal root ganglia ). There is a corresponding...
Shingles
Encyclopedia entry from: Gale Encyclopedia of Neurological Disorders ...by the varicella-zoster virus of the dorsal root ganglia of the spine. Equivalent...central nervous system , in particular, the dorsal root ganglia of the spine, which migrates...sensory nerves radiating from the infected dorsal root ganglia. Sensory nerves from these...
Marlins
Encyclopedia entry from: The Gale Encyclopedia of Science ...elongated, bill-like snouts, fairly high dorsal fins, and a streamlined body. They belong...from the other two genera in that their dorsal fins do not measure in height as much...with other fish in their family, the dorsal fins are long with many rays, and their...
early vertebrates and fish
Book article from: The Oxford Companion to the Earth ...separate gill openings and no paired or dorsal fins. All of them were found in shallow...dwellers. Paired pectoral fins and a dorsal fin were present, and the caudal fin...bony plates. There were no paired or dorsal fins, although some forms developed bony...
Triggerfish
Encyclopedia entry from: The Gale Encyclopedia of Science ...their name from a unique feature of their dorsal fin. The trigger-fish can lock the large dorsal spine in an upright position by supporting...or extract from small crevices. The locked dorsal spine can be “ unlocked ”...
dolphin
Book article from: The Columbia Encyclopedia, Sixth Edition ...of the water, while their forefins and dorsal fin are used for steering. Constantly...Dolphins breathe air through a single, dorsal blowhole. The dolphin's intelligence...stripes on the sides, and a sickle-shaped dorsal fin. Its pronounced, slim beak, holding...
Bass
Encyclopedia entry from: The Gale Encyclopedia of Science ...rough scales with a comblike edge. There are two dorsal fins, which are connected and the first fin has...perchlike body shape with a thick spine on the first dorsal fin and a soft rayed second dorsal fin. Saltwater bass vary in size from massive...
Arthropoda
Book article from: The Columbia Encyclopedia, Sixth Edition ...segment; a complex nervous system with a dorsal brain, connective nerves passing around...segment; an open circulatory system with a dorsal heart into which blood flows through paired...body was composed of a head covered by a dorsal shield, a trunk (thorax), and a terminal...
Horseshoe Crabs
Encyclopedia entry from: The Gale Encyclopedia of Science ...the large greenish brown, helmet-like dorsal plate, called either the cephalothorax...abdomen. Measured from the front of its dorsal plate to the tip of its tail spine, the...and six body segments lie underneath its dorsal plate; a pair of limbs is attached to...
Mooneyes
Encyclopedia entry from: The Gale Encyclopedia of Science ...adipose fin, which is a small, extra dorsal fin located well back on the fish...differentiated by their eye coloring, dorsal fins, and the position of their ventral...mooneye has 11-12 rays comprising its dorsal fin. The same fin on the goldeye has...

Dictionary entries related to "Dorsal"

dorsal fin
Book article from: A Dictionary of Zoology dorsal fin The unpaired fin located on the back (dorsal surface) of both bony fish and sharks. It may be single and soft-rayed, as in trout, or double with the anterior dorsal fin supported by fin spines, as in perch. In some species...
dorsal root
Book article from: A Dictionary of Biology dorsal root The part of a spinal nerve that enters the spinal cord on the dorsal side and contains only sensory fibres. The cell bodies of these fibres form the dorsal root ganglion (see ganglion ), a swelling in the root that lies just outside the cord. Compare ventral root .
dorsal
Book article from: The Oxford Pocket Dictionary of Current English ...Zool. , & Bot. of, on, or relating to the upper side or back of an animal, plant, or organ: a dorsal view of the body the dorsal aorta. Compare with ventral . DERIVATIVES: dor·sal·ly adv.
dorsal aorta
Book article from: A Dictionary of Zoology dorsal aorta The main artery conveying blood to the posterior part of the body.
Centrolophidae
Book article from: A Dictionary of Zoology ...large marine fish, with long anal and dorsal fins , fairly small pelvic fins , and...forked tail fin. The few spines of the dorsal fin may be absent or short, or grade into the many-rayed, soft second dorsal. Centrolophids tend to be pelagic...
Istiophoridae
Book article from: A Dictionary of Zoology ...a long bill (upper jaw), and a high dorsal fin , which is even more accentuated in...sailfish. When swimming, the long-based dorsal fin is folded down into a special groove...The deeply forked tail fin has very long dorsal and ventral lobes. Makaira nigricans...
Trachinidae
Book article from: A Dictionary of Zoology ...the head. The short, spiny-rayed, dorsal fin is separated from the long-based, soft-rayed, dorsal fin by a distinct notch. All weeverfish...poison glands at the base of the spiny dorsal rays as well as on the spine of the gill...
Characidae
Book article from: A Dictionary of Zoology ...in size and some are very colourful. All have a single dorsal fin on the back, often a small adipose dorsal fin, a forked tail fin, and an anal fin which often is larger than the dorsal fin. Many species are extremely popular aquarium fish...
Mugiloididae
Book article from: A Dictionary of Zoology ...elongate body, small scales, a protractile mouth , and a large head. The dorsal and anal fins are long; the pelvic fins are located beneath the pectoral fins . The dorsal position of the eyes suggests a bottom-dwelling way of life. One of the...
Microdesmidae
Book article from: A Dictionary of Zoology ...eel-like body, small eyes, a pronounced lower jaw, and minute scales in the skin. The dorsal fin extends along most of the body, and both dorsal and anal fins are confluent with the tail fin. Wormfish are coastal fish living partially burrowed...

Thesaurus entries related to "Dorsal"

hind
Book article from: The Oxford American Writers Thesaurus hind • adjective  the left hind leg synonyms : back, rear, hinder, hindmost, posterior; dorsal. antonyms: fore, front.
posterior
Book article from: The Oxford American Writers Thesaurus ...posterior • adjective   1. the posterior part of the skull synonyms : rear, hind, back, hinder; technical dorsal, caudal. antonym: anterior.   2. formal a date posterior to statehood synonyms : later than, subsequent to, following...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Corvis Corporation Announces Agreement to Acquire Dorsal Networks; Significantly Expands Addressable Undersea Market Opportunities.
PR Newswire; 1/29/2002; 700+ words ; ...definitive merger agreement to acquire Dorsal Networks, a privately-held provider...network solutions. Corvis will acquire Dorsal in a stock transaction for approximately...the approximate three percent stake in Dorsal that Corvis already acquired through a...
The Tribolium castaneum Ortholog of Sex combs reduced Controls Dorsal Ridge Development
Magazine article from: Genetics; 9/1/2006; ; 700+ words ; ...embryonic head and thorax is formed by the dorsal ridge, a fused structure composed of...Deformed have been reported to cause abnormal dorsal ridge formation, but the significance...each of which has a different effect on dorsal ridge development. By using Engrailed...
Sacroiliac joint pain: Should physicians be blocking lateral branches, medial branches, dorsal rami, or ventral rami?
Magazine article from: Regional Anesthesia and Pain Medicine; 9/1/2003; ; 700+ words ; ...by Cohen and Abdi1 describing L4 and L5 dorsal rami and sacral lateral branch blocks...single intra-articular block, L4 and L5 dorsal rami blocks, and the authors' interpretation...Cohen and Abdi1 hypothesized that L4 dorsal ramus blockade would provide additional...
Morphology of the epithelial cells and expression of androgen receptor in rat prostate dorsal lobe in experimental hyperprolactinemia
Magazine article from: Folia Histochemica et Cytobiologica; 1/1/2006; ; 700+ words ; ...in rat epithelial cells of prostate dorsal lobe and on morphology of these cells...light and electron microscopy the prostate dorsal lobes were obtained routinely. To evaluate...used. Morphological observations of the dorsal lobe epithelial cells were carried out...
Dorsal sensory impairment in hands and feet of people affected by Hansen's disease in Israel.(Clinical report)
Magazine article from: Leprosy Review; 12/1/2007; ; 700+ words ; ...In Israel, both palmar/plantar and dorsal aspects of limbs are routinely tested...study was to describe the magnitude of dorsal sensory impairment (SI) in limbs and...sensory status. Both palmar/plantar and dorsal aspects were tested using Semmes--Weinstein...
Isolated dorsal midtarsal (Chopart) dislocation: a case report
Magazine article from: Journal of Orthopaedic Surgery; 12/1/2006; ; 700+ words ; ABSTRACT A case of isolated dorsal midtarsal (Chopart) dislocation resulting...Pott's fracture, and an isolated dorsal dislocation of the right midtarsal...showed the unstable midtarsal joint with dorsal translation of the navicular and cuboid...
Clinical study of dorsal ulnar artery flap in hand reconstruction
Magazine article from: Indian Journal of Plastic Surgery; 1/1/2009; ; 700+ words ; ...drawbacks and suboptimal outcomes. The dorsal ulnar artery fasciocutaneous flap was...perfused by the ascending branch of the dorsal ulnar artery, one of the major branches...without losing a major vascular axis. The dorsal ulnar artery fasciocutaneous flap can...
Outcome of occipito-cervico-dorsal flap reconstruction evaluated.
Newspaper article from: Medical Devices & Surgical Technology Week; 8/15/2004; 699 words ; ...The utility of the occipito-cervico-dorsal flap in reconstructive surgery has been...reconstructions with occipito-cervico-dorsal flaps in their department between 1994...microvascular augmented occipito-cervico-dorsal flaps, and four were reconstructed with...
Dynamical Analysis of the Regulatory Network Defining the Dorsal-Ventral Boundary of the Drosophila Wing Imaginal Disc
Magazine article from: Genetics; 11/1/2006; ; 700+ words ; ...which is secreted by cells adjacent to the dorsal-ventral (DV) boundary. Two signaling...maintain the wild-type expression at the dorsal-ventral boundary. Finally, another...organized by the anterior- posterior and dorsal-ventral boundaries through the morphogens...
Dorsal dislocation of the metacarpophalangeal joint of the thumb: a case report
Magazine article from: Journal of Orthopaedic Surgery; 4/1/2008; ; 700+ words ; ABSTRACT Dorsal dislocation of the metacarpophalangeal...metacarpophalangeal joint; thumb INTRODUCTION Dorsal dislocation of the metacarpophalangeal...longitudinal traction of the finger. A separate dorsal incision was therefore made. The extensor...