Toerien M J, Gous A E
S Afr Med J. 1978 Jan 28;53(4):139-41.
The orbital muscle consists of smooth muscle fibres interspersed with blood lacunae and is therefore both contractile and erectile. Contraction is under sympathetic control, whereas erection appears to be under parasympathetic (pterygopalatine) influence. Apart from its possible effect on the position of the eyeball in the orbit, the muscle seems to be mainly concerned with directing facial venous blood to or away from the cavernous sinus which acts as a heat exchanger for internal carotid blood.
眶肌由散布有血腔隙的平滑肌纤维组成，因此既具有收缩性又具有勃起性。收缩受交感神经控制，而勃起似乎受副交感神经（翼腭神经节）影响。除了可能对眼球在眼眶中的位置产生影响外，该肌肉似乎主要与引导面部静脉血流向海绵窦或使其远离海绵窦有关，海绵窦充当颈内动脉血液的热交换器。
