Cov lus teb raug yog sarcoplasmic reticulum. Lub sarcoplasmic reticulum khaws cov calcium hauv cov leeg nqaij.
Yuav khaws cov calcium hauv cov leeg nqaij li cas?
Sarcoplasmic reticulum, intracellular system ntawm kaw saclike membranes koom nrog hauv kev cia cov calcium intracellular nyob rau hauv striated (skeletal) cov leeg hlwb.
calcium khaws cia nyob rau hauv lub sarcomere nyob qhov twg?
Qhov twg hauv sarcomere yog ATPase? Nqe lus piav qhia: Lub sarcoplasmic reticulum nyob rau hauv cov leeg nqaij yog qhov chaw ntau cov calcium ions khaws cia thiab tso tawm.
calcium ua dab tsi hauv sarcomere?
Calcium xav tau los ntawm ob lub proteins, troponin thiab tropomyosin, uas tswj cov leeg nqaij los ntawm kev thaiv kev khi ntawm myosin rau filamentous actin. Hauv kev so sarcomere, tropomyosin thaiv kev khi ntawm myosin rau actin.
Thaum calcium tso rau hauv sarcomere?
Cov calcium yuav kis thoob plaws hauv lub sarcomere thiab khi rau troponin. Troponin tom qab ntawd tso tawm qhov cuam tshuam rau kev sib cuam tshuam ntawm cov ntaub nyias nyias nrog cov tuab tuab thiab cov actin thiab myosin hnov mob rau ib leeg [9].