Schönfelder J, Zschäckel M
Gegenbaurs Morphol Jahrb. 1985;131(1):31-41.
The middle ear apparatus realized a multiplicatory function during the transfer of the vibrational energy, depending on the area ratio of pars tensa of tympanic membrane and of stapes footplate as well as the lever ratio of long arms of manubrium and of incus. These structures exhibit a size increase during the postnatal development, but the sequel on the multiplicatory function in rabbits is unknown. The middle ear structures of 46 rabbits, 1 to 30 d old, were prepared and measured. The area of pars tensa and the levers of malleus and incus increase with age. After the 10th d of life, no statistical significant growth were measurable. But the calculated multiplicatory factor of single animals indicate the end of the development at the 15th postnatal d. In contrast, the cochlear function attains the adult values not till the 26th d of life. It is 10 d longer than the middle ear growth.
中耳装置在振动能量传递过程中发挥了倍增功能，这取决于鼓膜紧张部与镫骨足板的面积比以及锤骨柄长臂与砧骨的杠杆比。这些结构在出生后发育过程中尺寸会增大，但兔子中耳装置倍增功能的后续变化尚不清楚。对46只1至30日龄兔子的中耳结构进行了制备和测量。紧张部的面积以及锤骨和砧骨的杠杆长度随年龄增长而增加。出生后第10天之后，未检测到统计学上的显著增长。但对单只动物计算得出的倍增因子表明，出生后第15天发育结束。相比之下，耳蜗功能直到出生后第26天才达到成年值。这比中耳生长长10天。
