Cov txheej txheem:
Video: Plaub yam ntxwv ua haujlwm ntawm cov leeg nqaij yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tag nrho cov leeg nqaij muaj 4 yam ntxwv zoo sib xws:
- excitability.
- contractility.
- extensibility - lawv tuaj yeem ncab.
- elasticity - lawv rov qab mus rau qhov ntev li qub tom qab ncab.
Hauv qhov no, 4 yam ntxwv ua haujlwm ntawm cov leeg nqaij yog dab tsi?
Tag nrho cov leeg hlwb Qhia ntau yam khoom: contractility, excitability, extensibility, thiab elasticity: Contractility yog lub peev xwm ntawm cov leeg. hlwb kom yuam kom luv.
Tsis tas li ntawd, cov yam ntxwv ntawm peb cov leeg nqaij yog dab tsi? Los ntawm kev siv cov kev faib tawm no peb leeg hom tuaj yeem piav qhia; skeletal, plawv thiab du. Pob txha nqaij yog yeem thiab striated, cardiac nqaij yog involuntary thiab stratified thiab du nqaij yog involuntary thiab tsis-striated.
Ntxiv mus, dab tsi yog yam ntxwv tseem ceeb ntawm cov leeg nqaij?
Cov nqaij mos yog yam ntxwv ntawm cov khoom uas tso cai rau kev txav mus los. Cov leeg cell yog excitable; lawv teb rau qhov stimulus. Lawv yog cov contractile, txhais tau tias lawv tuaj yeem ua kom luv thiab tsim kom muaj zog rub. Thaum txuas nruab nrab ntawm ob yam khoom siv txav tau, xws li ob pob txha, qhov sib tw ntawm cov leeg ua rau cov pob txha txav.
Cov leeg nqaij ua haujlwm yog dab tsi?
Cov nqaij mos muaj cov hlwb elongated kuj hu ua nqaij fibers. Cov ntaub so ntswg no yog lub luag haujlwm rau kev txav hauv peb lub cev . Cov leeg muaj cov protein tshwj xeeb hu ua contractile protein uas sib cog lus thiab so kom txav mus los. Cov nqaij mos sib txawv nrog kev ua haujlwm thiab qhov chaw nyob hauv lub cev.
Pom zoo:
Cov yam ntxwv ntawm cov leeg nqaij yog dab tsi?
Txhua cov nqaij leeg muaj 4 tus yam ntxwv sib xws: muaj kev txaus siab. kev cog lus extensibility - lawv tuaj yeem ncab
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Cov yam ntxwv ntawm cov leeg nqaij du yog dab tsi?
Plaub tus yam ntxwv txhais tau hais tias cov leeg nqaij pob txha: lawv tsis tuaj yeem tswj hwm, tsis striated, tsis branched, thiab singly nucleated. Cov cheeb tsam tsis nco qab ntawm lub paj hlwb tswj cov leeg visceral los ntawm cov hlab ntsha autonomic thiab enteric