Epi men oun tês gastros hai te dêxeis enargeis, dioti pleistês aisthêseôs metechei, ta t' alla pathêmata ta te nautian empoiounta kai hoi kaloumenoi kardiôgmoi saphôs endeiknyntai tên apokritikên te kai apôstikên tôn allotriôn dynamin, houtô de kapi tôn hysterôn te kai tês kysteôs tês to ouron hypodechomenês; enargôs gar oun kai hautê phainetai mechri tosoutou to hygron hypodechomenê te kai athroizousa, achris an êtoi pros tou plêthous autou diateinomenê mêketi pherê tên anian ê pros tês poiotêtos daknomenê; chronizon gar hekaston tôn perittômatôn en tô sômati sêpetai dêlonoti, to men elattoni, to de pleioni chronô, kai houtô daknôdes te kai drimy kai aniaron tois periechousi gignetai. ou mên epi ge tês epi tô hêpati kysteôs homoiôs echei; hô dêlon, hoti neurôn hêkista metechei. chrê de kantautha ton ge physikon andra to analogon exeuriskein. ei gar helkein te ton oikeion apedeichthê chymon, hôs phainesthai pollakis mestên, apokri||nein te ton auton 186 touton ouk eis makran, anankaion estin autên ê dia to plêthos barynomenên ê tês poiotêtos metaballousês epi to daknôdes te kai drimy tês apokriseôs ephiesthai. ou gar dê ta men sitia tên archaian hypallattei poiotêta tacheôs houtôs, hôst', epeidan empesê tois leptois enterois, euthys einai kopron, hê cholê d' ou poly mallon ê to ouron, epeidan hapax ekpesê tôn phlebôn, exallattei tên poiotêta, tachista metaballonta kai sêpomena. kai mên eiper epi te tôn kata tas hysteras kai tên koilian kai ta entera kai proseti tên to ouron hypodechomenên kystin enargôs phainetai diatasis tis ê dêxis ê achthos epegeiron hekaston tôn organôn eis apokrisin, ouden chalepon kapi tês cholêdochou kysteôs tauto tout' ennoein epi te tôn allôn hapantôn organôn, ex hôn dêlonoti kai hai artêriai kai hai phlebes eisin. XIII Nor is there any further difficulty in ascertaining that it is through the same channel that both attraction and discharge take place at different times. For obviously the inlet to the stomach does not merely conduct food and drink into this organ, but in the condition of nausea it performs the opposite service. Further, the neck of the bladder which is beside the liver, albeit single, both fills and empties the bladder. Similarly the canal of the uterus affords an entrance to the semen and an exit to the foetus. But in this latter case, again, whilst the eliminative faculty is evident, the attractive faculty is not so obvious to most people. It is, however, the cervix which Hippocrates blames for inertia of the uterus when he says:--"Its orifice has no power of attracting semen."[361]