- Types:
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costal groove
groove between the ribs where the nerves and blood vessels are
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fissure
(anatomy) a long narrow slit or groove that divides an organ into lobes
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sulcus
(anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain
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hilum, hilus
(anatomy) a depression or fissure where vessels or nerves or ducts enter a bodily organ