Qhov Tseem Ceeb Qhov txawv - Neurilema vs Myelin Sheath
Ua ntej sib tham txog qhov txawv ntawm Neurilemma thiab Myelin Sheath, cia peb ua ntej luv luv saib cov haujlwm ntawm lub paj hlwb. Tsiaj txhu sau cov ntaub ntawv los ntawm ib puag ncig thiab sib txuas lus nrog txhua qhov chaw ntawm lub cev los ntawm lub paj hlwb. Nws yog tsim los ntawm cov paj hlwb thiab cov paj hlwb, uas yog nyob rau hauv lub hlwb thiab qaum qaum. Sib nrug los ntawm cov paj hlwb (neurons), lub paj hlwb tau txhawb nqa los ntawm ob hom hlwb; Schwann hlwb thiab Oligodendrocytes, uas feem ntau hu ua neuroglia. Neurilemma thiab myelin sheath yog ob qho tseem ceeb ntawm cov cellular tau muab los ntawm neuroglia. Qhov sib txawv tseem ceeb ntawm Neurilemma thiab myelin sheath yog Neurilemma yog cov cytoplasm thiab cov nuclei ntawm Schwann hlwb pw sab nraum lub myelin sheath thaum Myelin sheath yog hloov kho cellular membrane qhwv ncig lub axon ntawm cov neurons. Hauv kab lus no, qhov sib txawv ntawm neurilema thiab myelin sheath tau piav qhia ntxiv.
Neurilema yog dab tsi?
Lub cytoplasm thiab cov nuclei ntawm Schwann hlwb uas nyob sab nraum lub myelin sheath yog sib sau ua ke hu ua neurilemma. Neurilemma tsuas yog tam sim no nyob rau hauv lub paj hlwb peripheral thiab tsis tuaj nyob rau hauv lub hauv paus paj hlwb vim tsis muaj Schwann hlwb. Neurilemma yog qhov tseem ceeb rau cov txheej txheem rov tsim dua ntawm cov hlab ntsha. Nws ntseeg tau tias qhov tsis muaj neurilemma tso nyiaj rau qhov tsis muaj peev xwm ntawm kev rov tsim dua tshiab ntawm lub paj hlwb.
Myelin Sheath yog dab tsi?
Myelin sheath yog tsim los ntawm sib law liag ntawm Schwann cell membrane nyob ib ncig ntawm lub axon ntawm ib tug neuron. Hauv cov hlab ntsha peripheral, Schwann hlwb tsim cov myelin sheath, thaum oligodendrocytes tsim cov myelin hauv nruab nrab paj hlwb. Myelinated axons nyob rau hauv nruab nrab lub paj hlwb tsim cov teeb meem dawb, qhov uas nyob rau hauv lub paj hlwb peripheral tsim cov paj hlwb. Myelin sheath tiv thaiv thiab insulates lub axon. Nws yog tsim los ntawm phospholipids. Myelin sheaths raug cuam tshuam rau lub sijhawm tsis tu ncua raws cov paj hlwb thiab hu ua cov nodes ntawm Ranvier.
Ua tiav Neuron Cell Diagram
Qhov txawv ntawm Neurilemma thiab Myelin Sheath yog dab tsi?
Definition of Neurilemma thiab Myelin Sheath
Neurilemma: Neurilemma yog lub cytoplasm, thiab cov nuclei ntawm Schwann hlwb nyob sab nraum myelin sheath.
Myelin sheath: Myelin sheath yog hloov kho cellular membrane qhwv ncig lub axon ntawm cov neurons.
Tus yam ntxwv ntawm Neurilemma thiab Myelin Sheath
Kev
Neurilemma: Nyob rau hauv nruab nrab lub paj hlwb, Schwann hlwb tsim cov myelin sheath, thaum, nyob rau hauv lub peripheral paj hlwb, myelin yog tsim los ntawm oligodendrites.
Myelin sheath: Neurilemma yog tsim los ntawm Schewann cell.
Function
Neurilemma: Neurilemma nourishes pab rau kev tsim cov hlab ntsha.
Myelin sheath: Myelin sheath tiv thaiv thiab insulates lub axon.
Presence
Myelin sheath: Myelin sheath muaj nyob rau hauv ob qho tib si hauv nruab nrab thiab peripheral paj hlwb.
Neurilemma: Neurilemma tsuas muaj nyob rau hauv lub paj hlwb peripheral.
Image Courtesy: "Complete neuron cell diagram en" los ntawm LadyofHats - Tus kheej ua haujlwm. Duab renamed los ntawm Duab: Ua tiav neuron cell diagram.svg. (Public Domain) ntawm Wikimedia Commons
