黄帝问曰∶太阴阳明为表里，脾胃脉也，生病而异者何也？岐伯对曰∶阴阳异位，更虚更实，更逆更从，
或从内，或从外，所从不同，故病异名也。帝曰∶愿闻其异状也。岐伯曰∶阳者，天气也，主外；阴者，地
气也，主内。故阳道实，阴道虚。故犯贼风虚邪者，阳受之；食饮不节起居不时者，阴受之。阳
受之则入六腑，阴受之则入五脏。入六腑则身热不时卧，上为喘呼；入五脏则 满闭塞，下为飧泄，久为肠
。故喉主天气，咽主地气。故阳受风气，阴受湿气。故阴气从足上行至头，而下行循臂至指端；阳气从
手上行至头，而下行至足。故曰阳病者上行极而下，阴病者下行极而上。故伤于风者，上先受之；伤于湿者，下
先受之。帝曰∶脾病而四肢不用何也？岐伯曰∶四肢皆禀气于胃，而不得至经，必因于脾，乃得禀也。今脾
病不能为胃行其津液，四肢不得禀水谷气，气日以衰，脉道不利，筋骨肌肉，皆无气以生，故不用焉。帝曰∶
脾不主时何也？岐伯曰∶脾者土也，治中央，常以四时长四脏，各十八日寄治，不得独主于时也。脾脏者
常着胃土之精也，土者生万物而法天地，故上下至头足，不得主时也。帝
曰∶脾与胃以膜相连耳，而能为之行其津液何也？岐伯曰∶足太阴者三阴也，其脉贯胃属脾络嗌，故太阴为之
行气于三阴。阳明者表也，五脏六腑之海也，亦为之行气于三阳。脏腑各因其经而受气于阳明，故为胃行
其津液。四肢不得禀水谷气，日以益衰，阴道不利，筋骨肌肉无气以生，故不用焉。
黄帝问道：太阴经与阳明经互为表里，分别对应脾和胃的脉象，但它们生病时表现却不同，这是为什么呢？岐伯回答说：阴阳两经所处的位置不同，虚实状态交替变化，气机逆顺也各不相同，有的病邪从体内产生，有的从体外侵入，由于受邪的途径不同，所以疾病名称也不同。黄帝说：我想听听它们不同的具体情况。岐伯说：阳经对应天气，主司体表；阴经对应地气，主司体内。所以阳经多实，阴经多虚。因此，遭受贼风虚邪等外邪侵袭时，阳经首先受邪；饮食不节制、起居无规律导致内伤时，阴经首先受邪。邪气侵犯阳经则传入六腑，侵犯阴经则传入五脏。邪气传入六腑，会出现身体发热、不能按时安卧，向上发展为气喘呼叫；邪气传入五脏，会出现胸腹满闷闭塞，向下发展为完谷不化的泄泻，日久则发展为肠澼（痢疾）。所以喉部主管天气的出入，咽部主管地气的吞咽。因此，阳经受风气侵袭，阴经受湿气侵袭。阴经之气从足部上行至头部，再下行沿手臂到达手指末端；阳经之气从手上行至头部，再下行至足部。所以说，阳经的病证往往先向上发展到极点然后向下传变，阴经的病证往往先向下发展到极点然后向上转归。因此，被风邪所伤的人，上部先受邪；被湿邪所伤的人，下部先受邪。黄帝问：脾脏有病会导致四肢不能正常运动，这是什么原因呢？岐伯说：四肢都依赖胃中的水谷精气供养，但胃气不能直接到达四肢的经脉，必须依靠脾的转输作用，才能将精气输送到四肢。现在脾脏有病，不能为胃传输津液，四肢得不到水谷精气的滋养，正气日益衰退，脉道运行不畅，筋骨肌肉都缺乏精气以生成，所以四肢就不能正常运动了。黄帝问：脾脏不单独主宰某个季节，这是什么原因呢？岐伯说：脾脏属土，治理中央方位，常在四季中滋养其他四脏，每季最后十八天由脾脏寄位主持，所以不能单独主宰某一个季节。脾脏常常附着于胃土的精微物质之上，土能生化万物并效法天地，其气贯通上下直至头足，所以不能单独主宰某一时节。黄帝问：脾与胃仅通过膜相连，而脾却能帮助胃传输津液，这是为什么呢？岐伯说：足太阴脾经属于三阴经之一，它的经脉贯穿胃腑，归属于脾脏，联络咽喉，所以太阴脾经能为三阴经传输精气。足阳明胃经是阳经之表，是五脏六腑气血的海源，它也为三阳经传输精气。脏腑各自通过各自的经脉从阳明胃接受精气，所以脾能帮助胃传输津液。如果四肢得不到水谷精气的滋养，正气就会日益衰弱，阴经脉道不利，筋骨肌肉缺乏精气以生成，所以四肢就不能正常运动了。
Huangdi asked: The Taiyin and Yangming meridians are exterior and interior to each other, corresponding to the pulses of the spleen and stomach respectively. Why do they manifest different diseases? Qibo replied: The positions of Yin and Yang differ; their deficiency and excess alternate; their rebellion and compliance vary. Some pathogens originate from within, some from without. Because the pathways of invasion differ, the names of the diseases differ. Huangdi said: I wish to hear about these differences in detail. Qibo said: Yang corresponds to the Qi of Heaven and governs the exterior; Yin corresponds to the Qi of Earth and governs the interior. Therefore, the Path of Yang is solid (excess), and the Path of Yin is hollow (deficient). Thus, when attacked by treacherous winds and empty evils (external pathogenic factors), the Yang meridians receive them first; when injured by irregular diet and improper daily routine (internal causes), the Yin meridians receive them first. When received by Yang, it enters the Six Fu-organs; when received by Yin, it enters the Five Zang-organs. Entering the Six Fu-organs results in fever and inability to lie down at proper times, progressing upward to panting and calling out; entering the Five Zang-organs results in fullness and obstruction, progressing downward to undigested diarrhea (Sun-xie), and over time to intestinal dysentery (Chang-pi). Therefore, the throat governs the Qi of Heaven, and the pharynx governs the Qi of Earth. Consequently, the Yang meridians receive Wind pathogen, and the Yin meridians receive Dampness pathogen. The Yin Qi ascends from the feet to the head, then descends along the arms to the fingertips; the Yang Qi ascends from the hands to the head, then descends to the feet. Hence it is said that diseases of Yang ascend to the extreme before descending, and diseases of Yin descend to the extreme before ascending. Therefore, those injured by Wind suffer on the upper part first; those injured by Dampness suffer on the lower part first. Huangdi asked: Why does disease of the Spleen lead to immobility of the four limbs? Qibo said: The four limbs all derive Qi from the Stomach, but this Qi cannot reach the meridians directly; it must rely on the Spleen to be transmitted. Now, if the Spleen is diseased and cannot transport fluids and essences for the Stomach, the four limbs do not receive Water-Grain Qi. The Qi declines day by day, the vessel pathways become obstructed, and the sinews, bones, muscles, and flesh lack Qi to nourish them, hence they do not function. Huangdi asked: Why does the Spleen not govern a specific season? Qibo said: The Spleen belongs to Earth, governs the Center, and constantly nourishes the Four Zang-organs throughout the four seasons. It presides for eighteen days during each season's transition, and thus cannot exclusively govern one season. The Spleen organ constantly adheres to the essence of Stomach-Earth. Earth generates all things and models Heaven and Earth; its Qi extends from top to bottom, reaching the head and feet, so it cannot govern a specific time. Huangdi asked: The Spleen and Stomach are connected only by membranes, yet how can the Spleen transport fluids for the Stomach? Qibo said: The Foot-Taiyin is one of the Three Yin meridians. Its vessels penetrate the Stomach, belong to the Spleen, and connect to the throat. Therefore, the Taiyin transmits Qi to the Three Yin meridians. The Yangming is the exterior of the Yang meridians and the Sea of the Five Zang and Six Fu organs; it also transmits Qi to the Three Yang meridians. The Zang and Fu organs each receive Qi from the Yangming through their respective meridians. Thus, the Spleen helps the Stomach transport fluids. If the four limbs do not receive Water-Grain Qi, they decline increasingly day by day, the Yin vessel pathways become obstructed, and the sinews, bones, muscles, and flesh lack Qi to generate, hence they do not function.