검증된 한국문화 엔티티 · 2026-07-02 기준 · 교차검증 + Skill Score · via KoreaAPI · ✓✓ 교차검증
설명
Tears (tear film) are a transparent fluid secreted primarily by the lacrimal glands (tear gland) found in the eyes of all land mammals. According to the mode of production, tears are classified into four types: basal, closed eye, emotional, and reflex. The basal rate of tear secretion is ~0.5–2.2 μL/min, and irritation can increase secretion by up to ~100-fold, reaching ~300 μL/min. Tears are made up of water, electrolytes, proteins, lipids, and mucins that form layers on the surface of eyes. — 영문 출처: Wikipedia