Prof. of Physiology： Kiss is the juxtaposition of two orbicularis oris muscles in the state of contraction.
Prof. of Physiology： Kiss is the juxtaposition of two orbicularis oris muscles in the state of contraction.
生理学教授接吻是两块口轮匝肌在收缩状态时并置在一起。
Prof. of Physiology： Kiss is the juxtaposition of two orbicularis oris muscles in the state of contraction.
生理学教授接吻是两块口轮匝肌在收缩状态时并置在一起。