Hilum

A hilum (formerly called a hilus) is a depression or pit where structures are attached.


 * In human anatomy, the hilum is part of an organ where structures such as blood vessels and nerves enter.
 * The hilum of kidney (admits the renal artery, vein, ureter, and nerves) is the medial depression for blood vessels and ureter to enter the kidney chamber is the renal hilum.
 * splenic hilum
 * hilum of lung

The adjective form is "hilar", and the plural is "hila".