起于目内 ，上颊交巅；其支者，从巅至耳上角；其直者，从巅入脑，还出别下项，循肩膊内，挟脊抵腰中，入循
膂，络肾属膀胱；其支者，从腰中下挟脊内，挟脊贯臀，入 中；其支者，从膊内左右，别下贯胛，挟脊内，过髀枢，
循髀外从后廉下合 中，以下贯 内，循外踝后，循京骨，至小指外侧。是动则病冲头痛，目似脱，项似拔，脊痛腰似
折，髀不可以曲， 如结， 如裂，是为踝厥。是主筋所生病者，痔疟狂癫疾，头囟项痛，目黄泪出鼽衄，项臂腰尻
脚皆痛，小指不用，为此诸病。（膊，音博。膂，音旅。臀，音屯。 ，音国。胛，音甲。 ， 音。 即俗云腿腕）
此言膀胱经脉之行，乃为第七经也。目大角为内 ，发际前为额，脑上为巅顶也。脑，头髓也。脑后为项，肩后之
下为肩膊，椎骨为脊，尻上横骨为腰，挟脊为膂。臀，尻也。挟腰髋骨两旁为机，机后为臀，腓腹上、膝后曲处为 ，
膂内为胛，即挟脊肉也。股外为髀，捷骨之下为髀挥，腓肠为 。足太阳之脉起于目内 睛明穴，受手太阳之交也，上
额，循攒竹过神庭，历曲差、五处、承光、通天，自通天斜行左右交于顶上之百会；其支行者，从巅至百会抵耳上角，
过率谷、浮白、窍阴穴，所以散养于筋脉也；其直行者，由通天、络却、玉枕入络脑，复出下项，以抵天柱；又由天柱
而下，过大椎、陶道，却循肩膊内、挟脊两旁，相去各寸半，下行历大杼、风门、肺俞、厥阴俞、心俞、膈俞、肝俞、
胆俞、脾俞、胃俞、三焦俞、肾俞、大肠俞、小肠俞、膀胱俞、中俞、内俞、白环俞，由是抵腰中，入循膂，络肾，下
属膀胱；其支别者，从腰中，循腰髋，下挟脊，历上 、次 、中 、下 、会阳，下贯臀，至承扶、殷门、浮 、委
阳，入 中之委中穴；其支别者，为挟脊两旁第三行相去各三寸之诸穴，自天柱而下，从膊内左右别行，下贯胛膂，历
附分、魄户、膏肓、神堂、噫嘻膈关、魂门、阳纲、意舍、胃仓、肓门、志室、胞盲、秩边，下历尻臀，过髀枢也，又
循髀枢之里、承扶之外一寸五分之间，而下与前之入 中者相合，下循合阳，下贯 内，历承筋、承山、飞扬、附阳，
出外踝后之昆仑、仆参、申脉、冲门，循京骨、束骨、通谷，至小趾外侧之至阴穴，以交于足少阴肾经也。故其变动，
则有邪气冲头而痛等症。
足太阳膀胱经的经脉，起始于目内眦（睛明穴），向上经过颞部，交会于头顶；它的分支，从头顶走向耳上角；它的主干，从头顶进入脑内，复出后分别下行至项部，沿着肩胛骨内侧，夹着脊柱到达腰部，深入循行于骶骨旁肌肉，联络肾脏，归属于膀胱；它的另一分支，从腰部向下，夹着脊柱内部，贯穿臀部，进入腘窝中；它的又一支脉，从肩胛内侧左右分开，向下穿过肩胛骨，夹着脊柱内部，经过髋关节，沿着大腿外侧后缘向下，在腘窝中与前面的支脉汇合，然后向下穿过小腿肚，沿着外踝后方，经过京骨穴，到达小趾外侧端。当这条经脉发生异常变动时，会出现头痛如冲撞、眼睛像要脱出、颈部像被拔起、脊柱疼痛腰部像折断、大腿不能弯曲、腘窝拘急像打结、小腿胀痛像撕裂一样的症状，这称为“踝厥”。本经主治筋所发生的疾病，包括痔疮、疟疾、狂证、癫疾，以及头囟和颈部的疼痛，眼睛发黄、流泪、鼻塞或鼻出血，颈、臂、腰、尻、脚等部位都疼痛，小趾不能活动，这些都是本经病变的表现。（膊，读音博。膂，读音旅。臀，读音屯。腘，读音国。胛，读音甲。腨，读音脰。腨即俗话说的腿肚子。）
这段文字讲述的是膀胱经脉的循行路线，它是十二经脉中的第七经。目大角为内眦，发际前为额部，脑上为巅顶。脑是头髓。脑后为项部，肩后之下为肩膊，椎骨为脊，尻上横骨为腰，夹着脊柱的为膂。臀就是尻。夹着腰髋骨两旁为机，机后为臀，腓肠肌上部、膝后弯曲处为腘，膂内为胛，即夹着脊柱的肌肉。大腿外侧为髀，捷骨之下为髀枢，腓肠肌为腨。足太阳膀胱经起始于目内眦的睛明穴，接受手太阳小肠经的气血交接，向上经过额部，沿着攒竹穴，经过神庭穴，依次经过曲差、五处、承光、通天穴，从通天穴斜行左右交会于头顶的百会穴；它的支行，从头顶到百会穴抵达到耳上角，经过率谷、浮白、窍阴穴，以此来滋养筋脉；它的直行者，由通天、络却、玉枕穴进入并联络脑，再复出下行至项部，以抵达天柱穴；又从天柱穴向下，经过大椎、陶道穴，接着沿着肩膊内侧、夹着脊柱两旁，距离脊柱各一寸半，下行依次经过大杼、风门、肺俞、厥阴俞、心俞、膈俞、肝俞、胆俞、脾俞、胃俞、三焦俞、肾俞、大肠俞、小肠俞、膀胱俞、中膂俞、内膂俞、白环俞，由此到达腰部中间，深入循行于膂，联络肾脏，向下属于膀胱；它的别行支脉，从腰部中间，沿着腰髋，向下夹着脊柱，依次经过上髎、次髎、中髎、下髎、会阳穴，向下贯穿臀部，到达承扶、殷门、浮郄、委阳穴，进入腘窝中的委中穴；它的又一支别脉，是夹着脊柱两旁第三行、距离脊柱各三寸的那些穴位，从天柱穴向下，从肩膊内侧左右分开行走，向下贯穿胛膂，依次经过附分、魄户、膏肓、神堂、噫嘻、膈关、魂门、阳纲、意舍、胃仓、肓门、志室、胞肓、秩边穴，向下经过尻臀，经过髋枢，又沿着髋枢的内里、承扶穴的外侧一寸五分之间，向下与之前进入腘窝的支脉相合，向下循行经过合阳穴，向下贯穿腨内，依次经过承筋、承山、飞扬、附阳穴，出于外踝后方的昆仑、仆参、申脉、冲门穴，沿着京骨、束骨、通谷穴，到达小趾外侧端的至阴穴，以此与足少阴肾经交接。所以它的变动，会有邪气冲击头部而疼痛等症状。
The Foot-Taiyang Bladder Meridian originates at the inner canthus (Jingming, BL1), ascends to the forehead and intersects at the vertex; its branch goes from the vertex to the upper angle of the ear; its main trunk enters the brain from the vertex, emerges again, descends separately to the nape, follows the medial aspect of the scapula, flanks the spine to reach the waist, enters and follows the paraspinal muscles, connects with the Kidney, and belongs to the Bladder; another branch descends from the waist, flanking the spine internally, penetrates the buttocks, and enters the popliteal fossa; yet another branch separates from the medial aspect of the shoulder on both sides, descends through the scapula, flanks the spine internally, passes the hip joint, follows the posterior margin of the thigh downwards, and joins with the previous branch in the popliteal fossa, then descends through the calf, follows behind the lateral malleolus, passes Jinggu (BL64), and reaches the lateral side of the little toe. When this meridian is affected by pathogenic factors, symptoms include headache as if being struck, eyes feeling as if they are falling out, neck feeling as if being pulled, back pain and waist feeling as if broken, inability to flex the thighs, stiffness in the popliteal fossa as if tied in a knot, and pain in the calf as if being torn; this is called "Huai Jue" (Ankle-Jue). This meridian governs diseases related to the sinews, including hemorrhoids, malaria, mania, epilepsy, pain in the vertex, occiput, and neck, yellow eyes, tearing, nasal congestion or epistaxis, pain in the neck, arm, waist, sacrum, and foot, and dysfunction of the little toe. These are all diseases of this meridian. (Bo, pronounced Bo. Lv, pronounced Lv. Tun, pronounced Tun. Guo, pronounced Guo. Jia, pronounced Jia. Shu, pronounced Shu. Shu refers to the calf muscle.)
This text describes the course of the Bladder Meridian, which is the seventh meridian. The large corner of the eye is the inner canthus; the area before the hairline is the forehead; the top of the head is the vertex. The brain is the marrow of the head. The back of the head is the nape; the lower part behind the shoulder is the scapular region; the vertebral column is the spine; the transverse bone above the sacrum is the waist; the muscles flanking the spine are the paraspinal muscles. The buttock is the sacrum. The areas flanking the iliac bones are the hips; behind the hips are the buttocks; the upper part of the gastrocnemius and the posterior bend of the knee is the popliteal fossa; the muscles inside the paraspinal region are the scapular muscles, i.e., the muscles flanking the spine. The outer thigh is the thigh; below the femoral head is the hip pivot; the gastrocnemius is the calf. The Foot-Taiyang Bladder Meridian originates at Jingming (BL1) in the inner canthus, receiving the intersection from the Hand-Taiyang Small Intestine Meridian, ascends to the forehead, follows Zanzhu (BL2), passes Shenting (GV24), sequentially passes Qucha (BL6), Wuchu (BL7), Chengguang (BL8), Tongtian (BL9); from Tongtian, it runs obliquely to intersect left and right at Baihui (GV20) on the vertex; its branch goes from the vertex to Baihui and reaches the upper angle of the ear, passing Lvgu (GB8), Fu Bai (GB12), and Xiaoyin (GB11), thereby nourishing the sinews and vessels; its main trunk, via Tongtian, Luoque (BL9), Yuzhen (BL11), enters and connects with the brain, then emerges and descends to the nape, reaching Tianzhu (BL10); again descending from Tianzhu, it passes Dazhui (GV14), Taodao (GV13), then follows the medial aspect of the scapula, flanking the spine on both sides, each 1.5 cun away from the spine, descending sequentially through Dazhu (BL11), Fengmen (BL12), Feishu (BL13), Jueyinshu (BL14), Xinshu (BL15), Geshushu (BL17), Ganshushu (BL18), Danshushu (BL19), Pishushu (BL20), Weishushu (BL21), Sanjiaoshu (BL22), Shenshu (BL23), Dachangshu (BL25), Xiaochangshu (BL27), Pangguangshu (BL28), Zhongshushu (BL29), Neishushu (BL30), and Baihuanshu (BL30), thereby reaching the middle of the waist, entering and following the paraspinal muscles, connecting with the Kidney, and descending to belong to the Bladder; its collateral branch, from the middle of the waist, follows the lumbar hip, descends flanking the spine, sequentially passing Shangliao (BL31), Ciliao (BL32), Zhongliao (BL33), Xialiao (BL34), and Huiyang (BL35), descends through the buttocks to Chengfu (BL36), Yinmen (BL37), Fupi (BL38), Weiyang (BL39), and enters Weizhong (BL40) in the popliteal fossa; another collateral branch consists of the acupoints in the third row flanking the spine, each 3 cun away from the spine, starting from Tianzhu, separating from the medial aspect of the shoulder on both sides, descending through the scapular paraspinal muscles, sequentially passing Fufen (BL17), Pohu (BL42), Gaohuang (BL43), Shentang (BL44), Yixi (BL45), Ge Guan (BL46), Hunmen (BL47), Yanggang (BL48), Yishe (BL49), Weicang (BL50), Huangmen (BL51), Zhishi (BL52), Baomang (BL53), and Zhibian (BL54), descending through the sacrum and buttocks, passing the hip pivot, then following the interior of the hip pivot, between 1.5 cun outside Chengfu, descending to merge with the branch that previously entered the popliteal fossa, descending along Heyang (BL55), penetrating the calf, sequentially passing Chengjin (BL56), Chengshan (BL57), Feiyang (BL58), Fuyang (BL59), emerging behind the lateral malleolus at Kunlun (BL60), Pucan (BL61), Shenmai (BL62), Chongmen (GB15), following Jinggu (BL64), Shugu (BL65), Tonggu (BL66), and reaching Zhiyin (BL67) on the lateral side of the little toe, thereby connecting with the Foot-Shaoyin Kidney Meridian. Therefore, its alterations manifest as symptoms such as headache caused by pathogenic qi striking the head.