手之六阳经脉，从手至头，长五尺，共计五六合三丈。
手之六阴经脉，从胸走手，长三尺五寸，共计三六一丈八尺，五六合三尺，合二丈一尺
足之六阳经脉，从头走至足，长八尺，共计六八四丈八尺。
足之六阴经脉，从足走入腹中，长六尺五寸，共计六六三十六，五六当三尺，合三丈九
督脉、任脉，各长四尺五寸，共合九尺。
两跷脉，从足至目，各长七尺五寸，共合一丈五尺。
十四脉部，合一十六丈二尺，此气之大经隧也。
手肺少商、中府起，大肠商阳、迎香二，足胃头维、历兑三，脾部隐白、大包四，手心
极泉、少冲来，小肠少泽、听宫去，膀胱睛明、至阴间，肾经涌泉、俞府位，心包天池、中
焦关冲、耳门继，胆家瞳子 、窍阴，厥肝大敦、期门至，十二经穴始终歌，学人铭于肺腑
《内经》曰∶肺者，相傅之官，治节出焉。
肺者，气之本，魄之处也。其华在毛，其充在皮，为阳中之太阴，通于秋气。
西方白色，入通于肺，开窍于鼻，藏精与肺，故病在背。其味辛，其类金，其畜马，其
谷稻，其应四时，上为太白星，是以知病之在皮毛也。其音商，其数九，其臭腥，其液涕。
西方生燥，燥生金，金生辛，辛生肺，肺生皮毛，皮毛生肾。肺主鼻，其在天为燥，在
地为金，在体为皮毛，在脏为肺，在声为哭，在变动为咳，在志为忧，忧伤肺，喜胜忧，热
伤皮毛，寒胜热，辛伤皮毛，苦胜辛。
手部的六条阳经，从手部走向头部，每条长五尺，六条合计为五六三十尺，即三丈。
手部的六条阴经，从胸部走向手部，每条长三尺五寸，六条合计为三六一十八尺，加上五六（指与阳经或基数换算）三尺，共计二丈一尺。
足部的六条阳经，从头部走向足部，每条长八尺，六条合计为六八四十八尺，即四丈八尺。
足部的六条阴经，从足部走入腹中，每条长六尺五寸，六条合计为六六三十六尺，加上五六三尺，共计三丈九尺。
督脉和任脉，各长四尺五寸，合计九尺。
两跷脉（阴跷脉和阳跷脉），从足部走向眼部，各长七尺五寸，合计一丈五尺。
十四经脉的总长度，合十六丈二尺，这是人体气运行的主要通道。
手太阴肺经起于中府穴，止于少商穴；手阳明大肠经起于商阳穴，止于迎香穴；足阳明胃经起于头维穴，止于厉兑穴；足太阴脾经起于隐白穴，止于大包穴；手少阴心经起于极泉穴，止于少冲穴；手太阳小肠经起于少泽穴，止于听宫穴；足太阳膀胱经起于睛明穴，止于至阴穴；足少阴肾经起于涌泉穴，止于俞府穴；手厥阴心包经起于天池穴；手少阳三焦经起于关冲穴，止于耳门穴；足少阳胆经起于瞳子髎穴，止于窍阴穴；足厥阴肝经起于大敦穴，止于期门穴。这是十二经脉穴位的起止歌诀，学习者应铭记于心。
《黄帝内经》说：肺，如同宰相之官，主持调节全身气机。
肺，是气的根本，也是魄所在的地方。其荣华表现于毛发，其精气充养于皮肤，属于阳中的太阴，与秋季之气相通。
西方对应白色，内通于肺，开窍于鼻，藏精于肺（注：原文此处可能有误，通常言藏精于肾或肺藏魄，但依原文翻译），所以病变反映在背部。其味辛，其属性为金，其畜类为马，其谷物为稻，其对应四季中的秋，在天体上对应太白星，因此可以知道病邪在皮毛。其音为商，其数为九，其气味为腥，其体液为涕。
西方产生燥气，燥气产生金，金产生辛味，辛味滋养肺，肺滋养皮毛，皮毛滋养肾。肺主管鼻，在天为燥，在地为金，在形体为皮毛，在脏腑为肺，在声音为哭，在变动为咳嗽，在情志为忧，忧伤肺，喜胜忧，热邪伤皮毛，寒胜热，辛味伤皮毛，苦味胜辛味。
The six Yang meridians of the hand extend from the hand to the head, each measuring five chi. In total, six times five equals thirty chi, or three zhang.
The six Yin meridians of the hand extend from the chest to the hand, each measuring three chi and five cun. Six times three equals eighteen chi; adding three chi (derived from the calculation context), the total is two zhang and one chi.
The six Yang meridians of the foot extend from the head to the foot, each measuring eight chi. Six times eight equals forty-eight chi, or four zhang and eight chi.
The six Yin meridians of the foot extend from the foot into the abdomen, each measuring six chi and five cun. Six times six equals thirty-six chi; adding three chi, the total is three zhang and nine chi.
The Du Mai (Governing Vessel) and Ren Mai (Conception Vessel) each measure four chi and five cun, totaling nine chi.
The two Qiao Mai (Yin and Yang Heel Vessels) extend from the foot to the eye, each measuring seven chi and five cun, totaling one zhang and five chi.
The combined length of the fourteen meridians is sixteen zhang and two chi; these are the major pathways through which Qi circulates.
The Hand-Taiyin Lung Meridian begins at Zhongfu (LU-1) and ends at Shaoshang (LU-11); the Hand-Yangming Large Intestine Meridian begins at Shangyang (LI-1) and ends at Yingxiang (LI-20); the Foot-Yangming Stomach Meridian begins at Touwei (ST-8) and ends at Lidui (ST-45); the Foot-Taiyin Spleen Meridian begins at Yinbai (SP-1) and ends at Dabao (SP-21); the Hand-Shaoyin Heart Meridian begins at Jiquan (HT-1) and ends at Shaochong (HT-9); the Hand-Taiyang Small Intestine Meridian begins at Shaoze (SI-1) and ends at Tinggong (SI-19); the Foot-Taiyang Bladder Meridian begins at Jingming (BL-1) and ends at Zhiyin (BL-67); the Foot-Shaoyin Kidney Meridian begins at Yongquan (KI-1) and ends at Yufu (KI-27); the Hand-Jueyin Pericardium Meridian begins at Tianchi (PC-1); the Hand-Shaoyang Sanjiao Meridian begins at Guanchong (TE-1) and ends at Ermen (TE-21); the Foot-Shaoyang Gallbladder Meridian begins at Tongziliao (GB-1) and ends at Qiaoyin (GB-11); the Foot-Jueyin Liver Meridian begins at Dadun (LR-1) and ends at Qimen (LR-14). This is the song describing the beginning and ending points of acupoints in the twelve meridians; students should memorize it thoroughly.
The *Neijing* states: The Lung is like the official of the prime minister, responsible for regulating the body's functions.
The Lung is the root of Qi and the residence of Po (Corporeal Soul). Its brilliance manifests in the hair, and its essence nourishes the skin. It belongs to Taiyin within Yang and corresponds to the Qi of Autumn.
The West corresponds to the color white, internally connecting with the Lung, opening into the nose, and storing essence in the Lung; therefore, diseases manifest in the back. Its flavor is pungent, its element is Metal, its associated animal is the horse, its grain is rice, and it corresponds to the season of Autumn. In the heavens, it corresponds to the planet Venus (Tai Bai). Thus, one can know that disease resides in the skin and hair. Its musical note is Shang, its number is nine, its odor is fishy, and its fluid is nasal discharge.
The West generates Dryness; Dryness generates Metal; Metal generates Pungency; Pungency nourishes the Lung; the Lung nourishes the skin and hair; the skin and hair nourish the Kidney. The Lung governs the nose. In Heaven, it is Dryness; in Earth, it is Metal; in the body, it is skin and hair; in the zang-fu organs, it is the Lung; in sound, it is weeping; in pathological change, it is cough; in emotion, it is sorrow. Sorrow damages the Lung; Joy overcomes Sorrow. Heat damages the skin and hair; Cold overcomes Heat. Pungency damages the skin and hair; Bitterness overcomes Pungency.