Notochord means
WebNotochord noun. an elastic cartilagelike rod which is developed beneath the medullary groove in the vertebrate embryo, and constitutes the primitive axial skeleton around which … Webnoun An elongated, rod-shaped structure composed of cells, forming the primitive supporting axis of the body in the lowest chordates and lying between the digestive tract …
Notochord means
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Webnoun An elongated, rod-shaped structure composed of cells, forming the primitive supporting axis of the body in the lowest chordates and lying between the digestive tract and the central nervous system. Webster's New World WebNotochord It is a longitudinal, cartilaginous rod running between the nerve cord and the digestive tract. It acts as a support for the nerve cord and is replaced by the vertebral column after the embryonic stage in all …
WebThe chordates are named for the notochord, which is a flexible, rod-shaped structure that is found in the embryonic stage of all chordates and in the adult stage of some chordate species. It is located between the digestive tube and the nerve cord, and provides skeletal support through the length of the body. ... Tetrapod literally means ... WebAug 25, 2024 · The notochord is a flexible rod that runs down the organism’s body’s anteroposterior axis (from top to bottom) and is located dorsal to the stomach and ventral to the body’s central nervous system. In reality, the …
WebIn some chordates, the notochord acts as the primary axial support of the body throughout the animal’s lifetime. In vertebrates, the notochord is present during embryonic development, at which time it induces the development of the neural tube and serves as a support for the developing embryonic body. Webnotochord, flexible rodlike structure of mesodermal cells that is the principal longitudinal structural element of chordates and of the early embryo of vertebrates, in both of which it …
WebSep 15, 2024 · A notochord is often described as a primitive backbone. The word notochord comes from the Greek words notos (back) and chorde (cord). It is a rigid, cartilaginous …
WebSep 15, 2024 · A notochord is often described as a primitive backbone. The word notochord comes from the Greek words notos (back) and chorde (cord). It is a rigid, cartilaginous rod that is present at some stage of development in all chordates. Some organisms, like African lungfish, tadpoles, and sturgeon, retain a post-embryonic notochord. biosecurity zonesWebApr 8, 2024 · notochord in British English (ˈnəʊtəˌkɔːd ) noun a fibrous longitudinal rod in all embryo and some adult chordate animals, immediately above the gut, that supports the body. It is replaced in adult vertebrates by the vertebral column Collins English Dictionary. Copyright © HarperCollins Publishers Derived forms notochordal (ˌnotoˈchordal) adjective bioselect hair and body fragrance mistWebMay 17, 2024 · What is Notochord? The notochord definition is a rod-like structure made of a cartilaginous substance that develops in all chordates at early embryonic stages as a … biosecurity zones nswWebNov 1, 2024 · A notochord is a primitive beginning to the backbone. It appears in embryos as a small flexible rod made from cells from the mesoderm, which is one of the three layers of cells of embryos.... bioselect leaWebnotochord: [ no´to-kord ] a cylindrical cord of cells on the dorsal aspect of an embryo, marking its longitudinal axis; the common factor of all chordates . It is the center of development of the axial skeleton. dairy job in gcc countriesWebApr 13, 2024 · A large majority of elasmobranchs breathe by ram ventilation, which means that they need to swim with their mouth open to allow oxygen-rich water to flow through their gills. These types of fishes are known as “obligated swimmers.”. But, animals need to significantly reduce activity to sleep. For an obligated swimmer, that means reducing ... biosemi cap with 64 electrodes 64+3 locationsWeb(nō′tə-kôrd′) A flexible rod-like structure that forms the main support of the body in the embryos of vertebrate animals, later developing into a true backbone. Primitive relatives of the vertebrates, known as lancelets and tunicates, only have a … biosedon alternative