dorsal fin definition
404bbda2c287997dc3668309ff4af69b
- Noun. 1. dorsal fin-unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance. fin-organ of locomotion and balance in fishes and some other aquatic animals.
c88e90c182319bcf1bcb49e8a608bb13
- What is Dorsalgia - Meaning, Definition, Unspecified, Icd10, Treatment. Dorsalgia. Dorsalgia is a group of disorders characterized by mild, moderate or intense pain that emerges from. muscles , nerves , bones , joints or other structures associated with spine. The pain can be constant or intermittent, localized or diffuse.
92ca479cf952262e4eb0dce76c9a0396
Fish fin Dorsal fin. Dorsal fin of a shark. A dorsal fin is a fin located on the backs of various unrelated marine and freshwater vertebrates, including most fish, cetaceans (whales, dolphins, and porpoises), and the (extinct) ichthyosaurs. Depending on the species, an animal may have one or two of them.
25b8422f95f7b8f47c8df10832675838
Dogfish Sharks Along the sides of the body is a light-colored horizontal stripe called the lateral line. The line is made up of a series of tiny pores that lead to receptors that are sensitive to the mechanical movement of water and sudden changes of pressure. The spiny dogfish has a double dorsal fin.he spiny dogfish has the presence two spines, one immediately in front of each dorsal fin. The spines carry a poison secreted by glands at their base. The caudal fin is divided into two lobes: a larger dorsal lobe and a smaller ventral lobe.
9e03323ce4dac1f1d0917088928b8049
dorsal Often used to indicate the position of one structure relative to another; that is, nearer the back surface of the body. 4. Old term meaning thoracic, in a limited sense; for example, dorsal vertebrae.[Mediev.ynonym(s): posterior (2) . [Mediev. L. dorsalis, fr. dorsum, back]. at or towards the back of the body (opposite of ventral), referring to the embryological history of the surfaces. In the ' anatomical position ' the palms face forwards and dorsal applies to the back of the hands and arms.
f4e74a9be502308346b340c04a14e2e1
Fish fin Fish fins are the most distinctive features of a fish, composed of bony spines protruding from the body with skin covering them and joining them together, either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks.
ee2b7d892f0034fc44f33dd0efd9d520
dorsal ventral - toward or on or near the belly (front of a primate or lower surface of a lower animal); the ventral aspect of the human body; the liver is somewhat ventral in position; ventral (or pelvic) fins correspond to the hind limbs of a quadruped.
2289cb59f65901088b28df100fadc9b1
- : an external membranous process of an aquatic animal (such as a fish) used in propelling or guiding the body — see fish illustration. : something resembling a fin: such as. : hand, arm. : to equip with fins. : to show the fins above the water. : to move through water propelled by fins. : a 5-dollar bill.
366fc3fa85089f97bdbf66bc1666d1ba
- pair of pelvic fins, which serve as stabilizers and which in the male are modified to form claspers used in. copulation; two median dorsal fins , which also serve as stabilizers; and an asymmetrical caudal (tail) fin . The. spiny dogfish is so named for a pair of spines immediately anterior to each dorsal fin. These spines are often removed from dissection specimens as t hey are mildly poisonous! Identify the mouth with its rows of teeth (modified placoid scales), which are adapted for cutting and
4dc4f7392b2097507a0be46a38022176
- In some regions, olive-brown spotting is present on the sides and head. Redear sunfish have two dorsal fins that are so smoothly connected they appear as one long fin. The first dorsal fin has 9 to 11 spines and the second has a near equal number of soft rays. The anal fin has three spines followed by a similar number of soft rays as the second dorsal fin.
f574166c1e3aa3e5132a5b77c2417e4d
- Sharks have five different kinds of fins. 1  Paired pectoral fins lift the shark as it swims. 2  Paired pelvic fins stabilize the shark. 3  One or two dorsal fins also stabilize the shark. In some species, dorsal fins have spines.  Not all sharks have an anal fin, but it. provides stability for the sharks that do have one.
fb1e9bc17e7e96c288015576af182a32
dorsal dorsal - facing away from the axis of an organ or organism; the abaxial surface of a leaf is the underside or side facing away from the stem. abaxial. biological science, biology - the science that studies living organisms.
0ccb61839039f4b50c08c1fcc39d7a77
anglerfish an·gler·fish. noun. pl. anglerfish or an·gler·fish·es. Any of various marine fishes of the order Lophiiformes, having a long dorsal fin ray that is suspended over the mouth and serves as a lure to attract prey. anglerfish. Any fish of the bony fish order Lophiiformes. These fish use an outgrowth that can be wiggled so as to resemble a prey animal to lure and catch their prey.
f4bc266afe00064cb1ccb65f9895029b
dorsal fin Define dorsal fin: a flat thin part on the back of some fish (such as sharks) a flat thin part on the back of some fish (such as sharks)… See the full definition of dorsal fin play : an external membranous process of an aquatic animal (such as a fish) used in propelling or guiding the body — see fish illustration : something resembling a fin: such as : hand, arm : to equip with fins : to show the fins above the water : to move through water propelled by fins : a 5-dollar bill
e7e7d2edd0973a6451046f5a3f9782e9
Medical Definition of Dorsal Dorsal: Relating to the back or posterior of a structure. As opposed to the ventral, or front, of the structure. Some of the dorsal surfaces of the body are the back, buttocks, calves, and the knuckle side of the hand. For a more complete listing of terms used in medicine for spatial orientation, please see the entry to Anatomic Orientation Terms.
574c2ed2ac35fb3a2badf07d55aa3077
- The back fin or dorsal fin is also used in balance and protection and in some fish families (pike and gar) it is used for propulsion. The pelvic fin and anal fin are located on the bottom or belly of fish and help with steering as well as balance.
a9fd09e7c8519f61d7f0635c25cc11a6
2 SHARK FIN 2.1 Background information. Most species of sharks have at least two sets of median fins situated along the central line of the body. There are one or two dorsal fins on the top, a caudal fin, which is the tail, and an anal fin located at the underside behind the anus. Most sharks have triangular dorsal fins.
ef25a95b26ebdced12f7bb320d317a53
Bowfin (Dogfish) They can also survive out of water for a considerable time. This primitive fish was around when dinosaurs roamed the earth. It is also known as a dogfish. The bowfin is a tubular, olive-green fish with a scaleless head and two barbels on its face.Its dorsal fin stretches most of the length of its back.his primitive fish was around when dinosaurs roamed the earth. It is also known as a dogfish. The bowfin is a tubular, olive-green fish with a scaleless head and two barbels on its face. Its dorsal fin stretches most of the length of its back.
da07a4a304d77e19596b624e3a454bb3
dorsal Relating to the back. Adj. 1. dorsal - belonging to or on or near the back or upper surface of an animal or organ or part; the dorsal fin is the vertical fin on the back of a fish and certain marine mammals.
9d2e00f3be889f4debe634dc00b61829
- They assist the fish in going up and down in water, turning and stopping. In some fish like gobies they are joined into a single sucker like disc which is used to attach to objects. Adipose Fins :- The adipose fin is a soft, fleshy fin found on the back behind the dorsal fin and just forward of the caudal fin.
b3ed310b6b100d6fe576c825645485de
A quick start on anatomical directions Dorsal: In humans, toward the back of the torso. The shoulder blades are dorsal to the ribs. Ventral: In humans, toward the front of the torso. The navel is on the ventral aspect of the body. In humans, dorsal and ventral are mostly synonymous with posterior and anterior, and the latter terms are often used. In animals with habitual postures that are different than ours, dorsal and ventral retain an anatomical meaning that is unchanged and thus prevent confusion.
e5f7e3aec5bff8b663667ec81cfbb565
- The spiny dogfish has a double dorsal fin. The anterior dorsal fin is larger than the posterior dorsal fin. The spiny dogfish has the presence two spines, one immediately in front of each dorsal fin.The spines carry a poison secreted by glands at their base.The caudal fin is divided into two lobes: a larger dorsal lobe and a smaller ventral lobe.xamine the side view photographs of the spiny dogfish shark by clicking the blue lettered links in the column to the right. The shark has a graceful and streamlined body shape built for fast, long distance swimming. The body is divided into the head, trunk, and tail.
254f050366202aab4fa440c9540458bb
Lactic acid In solution, it can ionize a proton from the carboxyl group, producing the lactate ion CH 3 CH(OH)CO 2 − . Compared to acetic acid, its pKa is 1 unit less, meaning lactic acid deprotonates ten times more easily than acetic acid does.
541c17b25601b0f5f5a70021c92a8a7a
dorsal Adjective [edit]. dorsal ‎(not comparable). ( 1 anatomy) With respect to, or concerning the side in which the backbone is located, or the analogous side of an invertebrate. ( 2 of a knife) Having only one sharp side.( 3 anatomy) Relating to the top surface of the foot or hand.( 4 linguistics, of a sound) Produced using the dorsum of the tongue.orsal ‎(not comparable). ( 1 anatomy) With respect to, or concerning the side in which the backbone is located, or the analogous side of an invertebrate. ( 2 of a knife) Having only one sharp side. ( 3 anatomy) Relating to the top surface of the foot or hand. ( 4 linguistics, of a sound) Produced using the dorsum of the tongue.
ff9df720927864e58a4a3e3e172b22e4
- The fin whale (Balaenoptera physalus) is the second longest whale in the world, second only to the blue whale (Balaenoptera musculus). It can grow to a reported length of 89.5 … ft (27.3 m) and weigh over 70 tons. It has a prominent, backswept dorsal fin.
5b9249e298e22d439b69fb565cdc1cec
dorsal In veterinary anatomy, pertaining to the back or upper surface of an animal. Often used to indicate the position of one structure relative to another; that is, nearer the back surface of the body. 4. Old term meaning thoracic, in a limited sense; for example, dorsal vertebrae.