Вічка Гессе

Вічка Гессе — світлочутливі органи ланцетника. Вони розташовані по боках невроциля по ходу нервової трубки. Кожне вічко Гессе являє собою світлочутливу клітку, яка наче занурена в чашкоподібні пігментні клітини. Вони здатні уловлювати тільки напрямок та інтенсивність світла[1][2]. Ці вічка схожі на примітивні вічка деяких вільноживучих плоских червів.

Вперше писані німецьким зоологом Ріхардом Гессе (нім. R. Hesse)[3].

Примітки


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