2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Dorsal paj qaum , Notochord dd Lamprey: Dorsal paj qaum , Notochord Tuna: Paired appendages, Vertebral kem Bullfrog: Paired Legs Snapping vaub kib : Amniotic Sac Kangaroo: Mammary Glands Rhesus Monkey: Placenta Human: Canine teeth short, foramen magnum.
Xav txog qhov no, puas tuna muaj dorsal paj qaum notochord?
Dorsal paj qaum thiab notochord : hauv tag nrho xya hom tsiaj • Cov ntawv txuas ua ke thiab qaum kem: hauv txhua hom tshwj tsis yog lamprey • Ob txhais ceg: hauv txhua hom tshwj tsis yog lamprey thiab tuna • Amnion: nyob rau hauv tag nrho cov hom tshwj tsis yog lub teeb, tuna , thiab bullfrogs • Mammary qog: nyob rau hauv kangaroo, rhesus liab, thiab tib neeg nkaus xwb • Placenta: nyob rau hauv
Tsis tas li ntawd, cov nas puas muaj amnion? Peb txheej amnion Nws muaj qhov yooj yim epithelium ntsib amniotic kab noj hniav, nyias cov ntaub so ntswg txheej txheej, thiab condensation ntawm fibroblast-zoo li cov hlwb nyob rau saum npoo ntsib VYSP. Qhov no txawv ntawm tib neeg placenta txij li thaum amnion hauv nas tsis suav nrog chorion zoo li VYSP.
Kuj Paub, yam kab mob dab tsi muaj qaum qaum qaum?
Cov dorsal paj hlwb yog qhov tshwj xeeb tshwj xeeb rau chordates, thiab nws feem ntau pom muaj nyob hauv Vertebrata chordate subphylum. Cov dorsal paj hlwb tsuas yog ib qho embryonic feature tshwj xeeb rau tag nrho cov chordates, ntawm lwm yam plaub chordate nta - ib tug notochord, tom qab lub qhov quav tail, endostyle, thiab pharyngeal slits.
Cov tsiaj twg muaj ib tug foramen magnum?
Raws li kev tshawb pom, a foramen loj positioned mus rau lub hauv paus ntawm lub pob txha taub hau yog pom tsis tau tsuas yog nyob rau hauv tib neeg, tab sis nyob rau hauv lwm yam habitually bipedal mammals thiab. Kangaroos, kangaroo nas thiab jerboas tag nrho muaj ib ntau rau pem hauv ntej -tau hloov foramen loj piv nrog lawv quadrupedal (plaub-legged taug kev) cov txheeb ze ze.
Pom zoo:
Cov hlab ntsha lossis cov hlab ntsha puas khov dua?
Cov hlab ntsha muaj cov leeg ntau dua thiab muaj me dua, puag ncig lub lumens (qhov chaw sab hauv) dua li cov leeg. Nws yog tsim los ntawm cov leeg nqaij du thiab elastic fibers hu ua elastin. Cov txheej ntawm elastin cais cov tunica media los ntawm lwm cov txheej. Tunica media yog txheej tuab tshaj plaws hauv cov hlab ntsha
Cov hlab ntsha hlab ntsha thiab cov hlab ntshav muaj dab tsi?
Cov hlab ntsha nqa ntshav tawm ntawm lub plawv; Lub ntsiab hlab ntsha yog aorta. Capillaries nqa ntshav tawm ntawm lub cev thiab pauv cov as-ham, pov tseg, thiab oxygen nrog cov ntaub so ntswg ntawm qib cellular. Cov leeg ntshav yog cov hlab ntshav uas coj cov ntshav rov qab los rau hauv lub plawv thiab tso ntshav tawm ntawm cov kabmob thiab cov ceg
Puas yog Neuroglia tsim cov hlab ntsha hauv cov hlab ntsha hauv nruab nrab cov hlab ntsha?
Muaj plaub hom neuroglia pom nyob hauv nruab nrab lub paj hlwb: Astrocytes - tswj cov ntshav lub hlwb teeb meem thiab khaws cov tshuaj ib puag ncig los ntawm kev siv cov ions rov qab thiab cov tshuaj xa xov mus rau lub cev. Oligodendrocytes - myelinate axons nyob rau hauv lub hauv nruab nrab lub paj hlwb thiab muab tag nrho cov txheej txheem txheej txheem
Vim li cas peb thiaj sau cov ntshav los ntawm cov hlab ntsha thiab tsis yog los ntawm cov hlab ntsha?
Cov leeg yuav tsum tau li qub kom cov ntshav ntws mus rau lub plawv. Theses li qub yog qhov tshwj xeeb hauv ob txhais ceg thiab caj npab. Lawv tawm tsam lub ntiajteb txawj nqus los tiv thaiv cov ntshav rov qab los. Cov hlab ntsha tsis xav tau li qub vim tias lub siab los ntawm lub plawv ua kom cov ntshav ntws los ntawm lawv mus rau ib qho
Puas yog cov hlab ntsha uas muaj oxygenated ntshav lossis cov hlab ntsha?
Cov hlab ntsha tau pom tias yog nqa cov ntshav oxygenated mus rau cov ntaub so ntswg, thaum cov leeg nqa cov ntshav deoxygenated rov qab mus rau lub plawv. Txawm li cas los xij, hauv txoj hlab ntsws, cov hlab ntsha nqa cov ntshav deoxygenated los ntawm lub plawv mus rau lub ntsws, thiab cov hlab ntshav rov qab ntshav los ntawm lub ntsws mus rau lub plawv