plural of 'ansa': a handle or loop-like structure. In anatomy, refers to looped structures such as loops of nerves or vessels (e.g., ansa cervicalis).

『ansa』（持ち手・環状構造）の複数形。解剖学では神経や血管などの'ループ'（例：ansa cervicalis＝頸神経ループ）を指す

in astronomy, small bright knots, condensations, or handle-like extensions at the ends or on opposite sides of some planetary nebulae (often described as 'handles').

天文学で、惑星状星雲の両端や両側に現れる突出した明部（いわゆる『持ち手』のような部分）を指す