Raws li chordates, vertebrates muaj tib yam nta: a notochord notochord Anatomical terminology
Nyob rau hauv lub cev, lub notochord yog ib tug pas nrig hloov tau tsim los ntawm cov khoom zoo sib xws. pob txha mos Yog hais tias ib hom muaj ib tug notochord ntawm txhua theem ntawm nws lub neej voj voog, nws yog, los ntawm txhais, ib tug chordate. https://en.wikipedia.org › wiki › Notochord
Notochord - Wikipedia
, lub dorsal hollow paj qaum, pharyngeal slits, thiab tom qab lub qhov quav. Vertebrates tau sib txawv ntxiv los ntawm chordates los ntawm lawv cov vertebral kem, uas tsim thaum lawv cov notochord txhim kho rau hauv kem ntawm pob txha vertebrae sib cais los ntawm discs.
Vim li cas txhua tus vertebrates yog chordates tab sis txhua chordates?
Teb: Notochord yog tus yam ntxwv ntawm txhua tus chordates. Cov tswv cuab ntawm sub-phylum - Vertebrata muaj notochord thaum lub sij hawm embryonic theem. … Yog li, qhov tsis muaj qhov tsis muaj qhov tsis muaj tus txha caj qaum hauv cov neeg laus qhia tias txhua tus vertebrates yog chordates tab sis tag nrho cov chordates tsis yog vertebrates.
Vim li cas ho yog chordates?
Chordates tau txais lawv lub npe los ntawm lawv cov yam ntxwv "notochord", uas ua si lub luag haujlwm tseem ceeb hauv chordate qauv thiab txav. Cov chordates kuj yog ob tog sib luag, muaj coelom, muaj lub voj voog, thiab nthuav tawm metameric segmentation.
Puas Chordata txhais tias vertebrate?
Chordate, ib tug tswv cuab ntawm phylum Chordata, uas suav nrog cov vertebrates ( subphylum Vertebrata), cov tsiaj hloov zuj zus tshaj plaws, nrog rau ob lwm yam subphyla-cov tunicates (subphylum Tunicata) thiab cephalochordates (subphylum Cephalochordata).
Puas yog tag nrho cov chordates yog vertebrates?
Chordates suav nrog Urochordates, Cephalochordates (ob leeg hu ua protochordates) thiab vertebrates. Nyob rau hauv vertebrates notochord yog hloov los ntawm vertebral kem (caj qaum), tab sis vertebral kem tsis nyob rau hauv protochordates. Yog li ntawd, tag nrho cov vertebrates yog chordates tab sis tag nrho chordates tsis yog vertebrates