家兔不同形态骨骼肌的运动终板分布.pdfVIP

27 2 V ol. 27 No. 2 2004 4 A CT A A CADEM IA E MEDICINAE ZU NY I A pr . 2004 杨胜波, 薛 黔 ( , 563003) [ ] , , , ; , Y , , S ; , , , ; , , [ ] 骨骼肌; 运动终板; 家兔 [ ] R322 [ ] A [ ] 2004) Distribution of motorendplates inthe differentmorphologicrabbit skeletal muscle YA N G S hengbo , X UE Qian ( Departm ent of A natom y , Zuny M ed cal College, Zuny Gu zhou 563003, Ch na) [Abstract] Objective T o nvest gate d str but o n of mo to r endplates n the d ff er ent morpholog c rabb t skeletal mu s cles. Methods M uscle arch tectur e and acetylchol nesterase sta n ng met hod . Results T he M . pectoral s major s a latus mu scle, It has ts endplates d ffusely d str buted throughout the mu scle. M . plantar s s pennate muscle, motor endplates on sur face o f t compactly arr anged and l ned up, formed a band and located at the m dpo nt of the muscle f bre lengt h, t hey l ed n tw o edges of the muscle belly. On sag ttal and frontal plane, Y shaped or lo ng r nged motor endplate bands w ere seen , hor zontal plane: S pattern ; Appearance of M . ex tensor d g to rum longus s sp ndle, t s a long muscle that w as co mposed of many short f asc cles. Mo to r endplate bands o f all sect o ns of M . ex tensor d g torum longus w as a cont nu ous band ex cept hor zontal plane on w h ch black sta n ng gra n w er e spr eaded ev er yw here. Conclusions D str but on of motor endplates w ere related to the spat al arrang ement of t he muscle f br es n r abb t ; T he p nnate or long mu scle w as make up muscle f bers of equal lengt h, the r motor end plate bands w er e longzoneshaped . T he end plates the d fferent lengthf bered latus muscle appeared to be located n shor t mult ple d str buted b