(Carassius auratus), some of the pored scales of the lateral line system are visible.]]
体侧线（lateral line；lateral line system (LLS)；lateral line organ (LLO)；側線管系；側線系；側線系統）是压力感受器官，又稱侧线或感覺溝，俗称鱼腥线。几乎所有的鱼、在水中生活的两栖动物如蝾螈或是爪蟾，还有很多水生的爬行动物，如鳄鱼等，都有体侧线。这种细小的感受器官成百上千的排列在身体侧边。在鱼类身体侧面大于正中，人们可以看见一条清晰的点状线，故名。体侧线感受水流和压力波。
体侧线的组成有两种，一是劳伦氏壶腹（Ampullae of Lorenzini），二是神经丘（Neuromasts）。后者是众多的感受细胞，它们的感觉毛在胶质状的壶腹帽（Cupula）中。水流造成壶腹帽的偏移，产生神经冲动。
註釋
參考文獻
- Coombs S and van Netten S (2006) [https://books.google.co.nz/books?hl=en&lr=&id=ct3BqkNcPLEC&oi=fnd&pg=PA103&dq=%22The+Hydrodynamics+and+Structural+Mechanics+of+the+Lateral+Line+System%22&ots=x27ydBiGLm&sig=h3QZC-soZrv6i_2nHFDsmvrTTY8#v=onepage&q=%22The%20Hydrodynamics%20and%20Structural%20Mechanics%20of%20the%20Lateral%20Line%20System%22&f=false "The Hydrodynamics and Structural Mechanics of the Lateral Line System"] In: R E Shadwick and G V Lauder (Eds) Fish Physiology: Fish Biomechanics, 23: 103–140, Academic Press. .
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參見
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外部連結
*[https://link.springer.com/chapter/10.1007/978-3-7091-6025-1_12 The Fish Lateral Line: How to Detect Hydrodynamic Stimuli]
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