Is there any meaning to the rail lines in Bakemonogatari's "Tsubasa Cat" OP?
Legs

大正－（新今宮）　　　　　　　平野－八尾－志紀－－▽－－尺土－浮孔－坊城－飛鳥－吉野口－緞野／吉野
　　　　　　　　＞（道王寺）＜　　　　　　　　　道明寺
　　　　（？池）　　　　　　　布忍－－－高鷲－－－△－－貴志－川西－天見－橋本－極樂橋
　　  　　１　　　　　Ｘ　　　　　　２　　　　　　Ｙ　　　　　　　　　　　　　３
（　）= Full name not shown on the scene


These are railway lines in Osaka:


The 1st upper-leg is Osaka Loop Line: Taisho, Shin-Imamiya
The 1st lower-leg is [? Line]: [? Station]
The 1st interchange (X) is Tennoji (accessible directly from Osaka Loop Line, Yamatoji Line)
The 2nd upper-leg is Yamatoji Line: Hirano, Yao, Shiki
The 2nd lower-leg is Minami Osaka Line (from Tennoji, transfer to Osaka Abenobashi in walkable distance): Nunose, Takawashi
The 2nd interchange (Y) is Domyoji (accesible from Yamatoji Line by transfering at Kashiwara to Domyoji Line, directly accessible from Minami Osaka Line)
The 3rd upper-leg is Minami Osaka Line - Yoshino Line (transfer at Kashiharajingu-mae): Shakudo, Ukiana, Bojo | Asuka, Yoshinoguchi, Yoshino
The 3rd lower-leg is Nagano Line (from Minami Osaka Line, transfer at Furuichi) - Koya Line (transfer at Kawachinagano): Kishi1, Kawanishi | Amami, Hashimoto, Gokurakubashi*


1 Uses kanji for Kishi Station in Wakayama instead.
* Uses traditional kanji



Hands

（百合ヶ丘）　　　　南多魔－西府－立川－奥多魔
   　　    ＞登戸＜
　　　　　　　　　　狛江－喜多見－經堂－豪徳寺－下北澤
　　　１　　　Ｘ　　　　　　　　　　２
（　）= Full name not shown on the scene


These are railway lines in Kanagawa-Tokyo:


The 1st upper-leg is Odakyu Odawara Line: Yurigaoka
The interchange (X) is: Noborito (accessible directly from Odakyu Odawara Line, Nambu Line)
The 2nd upper-leg is Nambu Line - Ome Line: Minami-Tama, Nishifu, Tachikawa | Okutama
The 2nd lower-leg is Odakyu Odawara Line: Komae, Kitami, Kyodo, Gotokuji, Shimo-Kitazawa




Body

　　　　　　　　　　高田馬場－池袋－巣鴨－上野－秋葉原－神田－＼
　　　　　　　　　／　　　　　　　　　　　　　　　　　　　　　　＼　　　　浅草－－－－▽－－－北千住－八潮－
三鷹－吉祥寺－新宿－－代々木－－千駄ヶ谷－－飯田橋－－御茶ノ水－－濱離宮＜　　　　　東京ガス
　　　　　　　　　＼　　　　　　　　　　　　　　　　　　　　　　／　　　　新日本橋－－△－－－錦絲町－新小岩－西船橋－東京タワー－津田沼－
　　　　　　　　　　澁谷－恵比壽－水道局－五反田－品川－有樂町／
　　　　　　　　　　　　　　　　　　｜
　　　　　　　　　　　　　　　　　不動前　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　芝公園
　　　１　　　Ｘ　　　　　　　　　　２　　　　　　　　　　　　　　　Ｙ　　　　　　　　３　　　　　　　　　　　　　　　　　Ｚ


These are railway lines in Tokyo:


The 1st leg is Chuo Main Line: Mitaka, Kichioji
The 1st interchange (X) is: Shinjuku
The 2nd upper-leg is Yamanote Line: Takadanobaba, Ikebukuro, Sugamo, Ueno, Akihabara, Kanda
The 2nd middle-leg is Chuo-Sobu Line: Yoyogi, Sendagaya, Iidabashi, Ochanomizu
The 2nd lower-leg is Yamanote Line: Shibuya*, Ebisu, Waterworks bureaux,2, Gotanda, Shinagawa, Yurakucho*
The vertical-leg (2) is Tokyo Meguro Line (transfer at Meguro): Waterworks bureaux,2, Fudomae
The 2nd interchange (Y) is: Hamarikyu Gardensx,3
The 3rd interchange (3) is: Tokyo Gasx,4
The 3rd upper-leg is Tobu Skytree Line: Asakusa, Kita-Senju, Yashio
The 3rd lower-leg is Sobu Line (Rapid) (from Tokyo) - Chuo-Sobu Line : Shin-Nihombashi, Kinshicho*, Shin-Koiwa | Nishi-Funabashi, Tokyo Towerx,5, Tsudanuma
The Z point is: Shiba Parkx


x Not a station
2 Represents Meguro on Yamanote Line. Between Ebisu and Gotanda, there's a waterworks bureau in Meguro
3 Represents Tokyo on Yamanote Line (accessible from Ochanomizu by transfering to Chuo Line)
4 Represents Higashi-Mukojima on Tobu Skytree Line and Ryogoku on Chuo-Sobu Line. Both have Tokyo Gas near them.
5 Tokyo Tower is not anywhere near the Chuo-Sobu Line
* Uses traditional kanji



Conclusion

The railway lines are real, though they don't seem to mean anything. However, the bolded places on the body seem to mean something:


Waterworks bureau near bladder
Hamarikyu Gardens near womb
Tokyo Gas near large intestine
Tokyo Tower &amp; Shiba Park are... recreation places




Reference: a more SFW, redrawn OP by NEXIS on YouTube