Qhov Tseem Ceeb Qhov txawv - Sarcolemma vs Sarcoplasmic Reticulum
Cov leeg nqaij yog tsim los ntawm cov kab mob sib txawv uas tshwj xeeb los ua lawv txoj haujlwm. Lub luag haujlwm tseem ceeb ntawm cov leeg yog los pab txhawb kev cog lus thiab so kom txaus thiab yog li ua kom yooj yim txav thiab txav chaw. Cov leeg ntawm tes yog tsim los ntawm cov organelles sib txawv xws li sarcolemma, sarcomere, sarcoplasm thiab sarcoplasmic reticulum, transverse tubules thiab cisternae. Sarcolemma ntawm cov leeg nqaij yog hais txog plasma daim nyias nyias ntawm cov leeg nqaij uas muaj phospholipid bilayer thiab lwm yam tshwj xeeb biomolecules. Sarcoplasmic reticulum (SR) yog hais txog qhov du endoplasmic reticulum ntawm cov leeg nqaij uas ua raws li kev sib txuas ntawm cov tubules ntawm myofibrils. Yog li ntawd, sarcolemma thiab sarcoplasmic reticulum yog ob lub organelles hauv cov leeg nqaij. Lub sarcolemma yog cov plasma daim nyias nyias uas nyob ib puag ncig cov leeg ntawm tes, hos, sarcoplasmic reticulum yog tus du endoplasmic reticulum ntawm cov leeg nqaij. Qhov no yog qhov sib txawv tseem ceeb ntawm sarcolemma thiab sarcoplasmic reticulum.
Sarcolemma yog dab tsi?
Sarcolemma yog plasma membrane ntawm cov leeg nqaij. Nws yog tsim los ntawm phospholipid bilayer uas muaj lub taub hau hydrophilic thiab hydrophobic tails. Lub sarcolemma kuj tseem muaj txheej txheej polysaccharide uas hu ua glycocalyx. Lub sarcolemma tsim cov dynamic txheej txheej membrane thiab yog ciam teb rau cov leeg nqaij cov ntsiab lus. Cov leeg nqaij cov ntsiab lus yog embedded nyob rau hauv lub sarcoplasm.
Cov leeg nqaij plasma membrane (sarcolemma) muaj cov qauv tshwj xeeb hu ua transverse tubules. Transverse tubules yog invaginations ntawm sarcolemma. Cov membranous invaginations txuas ntev mus rau hauv cytoplasm ntawm cov leeg nqaij. Lub transverse tubules kuj tseem hu ua T tubules. Lub davhlau ya nyob twg cisternae yog tsim los ntawm ob sab ntawm t tubules. Thaum ob lub cisterna ncig lub t tubule, nws raug hu ua triad.
Daim duab 01: Sarcolemma
Lub luag haujlwm tseem ceeb ntawm sarcolemma, hais txog cov leeg nqaij, yog los pab txhawb kev permeability ntawm Calcium ions xav tau rau cov txheej txheem contraction. Calcium ions raug thauj mus thoob plaws lub sarcolemma ntawm ion raws thiab raug thauj mus rau hauv lub cytoplasm ntawm cov leeg hlwb (sarcoplasm) ntawm lub transverse tubules. Qhov no yuav ua rau cov leeg nqaij muaj peev xwm ua rau cov leeg nqaij. Sarcolemma kuj tseem muaj ntau lub teeb liab tau txais receptors uas yuav tsum tau tswj hwm cov leeg nqaij ntawm tes.
Sarcoplasmic Reticulum yog dab tsi?
Sarcoplasmic reticulum zoo ib yam li endoplasmic reticulum ntawm cov hlwb ib txwm. Vim qhov chaw tshwj xeeb, cov leeg nqaij ntawm tes endoplasmic reticulum yog hu ua sarcoplasmic reticulum. Qhov no belongs rau tus du endoplasmic reticulum. Nws ua lub luag haujlwm tseem ceeb hauv kev khaws cov calcium ions. Cov qauv ntawm sarcoplasmic reticulum yog tsim los ntawm lub network ntawm tubules. Lawv txuas mus thoob plaws hauv cov leeg nqaij thiab pom tau qhwv ib ncig ntawm myofibrils. Lub sarcoplasmic reticulum nyob ze ze rau T tubules, thiab lawv muaj feem cuam tshuam los ntawm lub davhlau ya nyob twg cisternae.
Peb lub luag haujlwm tuaj yeem piav qhia tag nrho cov haujlwm ntawm calcium cia hauv SR
- Calcium Absorption
- Calcium cia
- Calcium tso tawm
Nyob rau theem ntawm kev nqus calcium, sarcoplasmic reticulum, nqus Calcium ions ntawm calcium twj tso kua mis ntawm sarcoplasmic reticulum. Cov txheej txheem ntawm kev nqus calcium yuav tsum tau ATP. Yog li ntawd, lawv hu ua sarcoplasmic reticulum ATPases. Thaum khi ntawm Calcium rau cov receptors no, phosphorylation hloov pauv ntawm cov receptor ua rau muaj kev hloov pauv ntawm cov khoom thauj. Qhov kev hloov pauv no ua kom yooj yim thauj cov calcium ions mus rau hauv cov leeg nqaij.
Daim duab 02: Sarcoplasmic Reticulum
Lub sarcoplasmic reticulum yog tsim los ntawm cov protein uas hu ua Calsequestrin. Cov protein no ua raws li calcium-binding protein thiab tuaj yeem khaws cov calcium ions kom txog rau thaum qhov kev xav tau tshwm sim. Qhov kawg ua haujlwm ntawm sarcoplasmic reticulum yog tso cov calcium ions los siv rau cov leeg nqaij. Calcium ions raug tso tawm los ntawm lub davhlau ya nyob twg cisternae. Cov receptors sib txawv pab txhawb cov txheej txheem no, thiab cov kev hloov pauv xws li phosphorylation ntawm receptors coj qhov chaw tso tawm cov calcium ions raws li cov leeg nqaij xav tau.
Dab tsi zoo sib xws ntawm Sarcolemma thiab Sarcoplasmic Reticulum?
- Ob leeg yog cov organelles pom nyob rau hauv cov leeg hlwb.
- Ob leeg koom nrog hauv calcium physiology ntawm cov leeg hlwb.
Qhov txawv ntawm Sarcolemma thiab Sarcoplasmic Reticulum yog dab tsi?
Sarcolemma vs Sarcoplasmic Recticulum |
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| Sarcolemma ntawm cov leeg nqaij yog hais txog cov plasma membrane ntawm cov leeg nqaij uas muaj phospholipid bilayer thiab lwm yam tshwj xeeb biomolecules. | Sarcoplasmic reticulum hais txog qhov du endoplasmic reticulum ntawm cov leeg nqaij uas ua raws li kev sib txuas ntawm cov tubules ntawm myofibrils. |
| Muaj nuj nqi | |
| Sarcolemma ua raws li tus ciam teb sab nraud ntawm cov leeg nqaij thiab pab txhawb kev nkag ntawm calcium ions. | Sarcoplasmic reticulum ua peb lub luag haujlwm tseem ceeb; Kev nqus calcium, khaws cia calcium thiab tso calcium. |
Summary – Sarcolemma vs Sarcoplasmic Reticulum
Cov leeg nqaij yog qhov tseem ceeb vim nws ua tau ib qho ntawm lub ntsiab physiological zog uas yog qhov contraction thiab so. Cov leeg nqaij muaj ntau cov organelles uas cov sarcolemma thiab sarcoplasmic reticulum ua lub luag haujlwm tseem ceeb hauv calcium uptake thiab tso tawm. Lub sarcolemma zoo ib yam li cov plasma membrane thiab ua raws li cov dynamic txheej txheej ntawm cov leeg hlwb. Lub sarcolemma kuj tso cai rau calcium uptake, whereas lub sarcoplasmic reticulum nyob rau hauv lub sarcoplasm. Nws koom nrog feem ntau hauv calcium nqus thiab khaws cia. Sarcoplasmic reticulum tso calcium raws li qhov yuav tsum tau ua. Qhov no yog qhov txawv ntawm sarcolemma thiab sarcoplasmic reticulum.
Download PDF Sarcolemma vs Sarcoplasmic Reticulum
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline lub hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Sarcolemma thiab Sarcoplasmic Reticulum
