lágrima

Also known as tears, tearing, tear fluid

thumb|upright=1.15|Human tears 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. The four types of tears differ significantly in their composition. upr

AI overview

Tears are a clear fluid produced by glands in the eyes of all land mammals, made up of water, electrolytes, proteins, lipids, and mucins that coat the eye's surface. They come in four different types—basal, closed eye, emotional, and reflex—each with distinct compositions, and their production can increase dramatically in response to irritation.

AI-generated from the Wikipedia summary — may contain errors.

Research

83,190 papers

Influence of pelvic floor muscle training alone or as part of a general physical activity program during pregnancy on urinary incontinence, episiotomy and third- or fourth-degree perineal tear: Systematic review and meta-analysis of randomized clinical trials.Acta obstetricia et gynecologica Scandinavica · 2024Zhang D, Bo K, Montejo R et al.DOI: 10.1111/aogs.14744
Perineal tears - A review.ReviewAustralian journal of general practice · 2018Goh R, Goh D, Ellepola HDOI: 10.31128/AFP-09-17-4333
Tear propagation in vaginal tissue under inflation.Acta biomaterialia · 2021McGuire JA, Monclova JL, Coariti ACS et al.DOI: 10.1016/j.actbio.2021.03.065
Treatment of Degenerative Meniscus Tears.Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association · 2023Hohmann EDOI: 10.1016/j.arthro.2022.12.002
Patient Outcomes After Horizontal Cleavage Tear Repair: A Systematic Review.Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association · 2020Morris JH, Magnussen RA, DiBartola AC et al.DOI: 10.1016/j.arthro.2020.04.027
The International Skin Tear Advisory Panel: 10 Years in the Making.ReviewAdvances in skin & wound care · 2019LeBlanc KDOI: 10.1097/01.ASW.0000604188.00448.65
Rehabilitation protocols following rotator cuff repair: a meta-analysis of current evidence.ANZ journal of surgery · 2021Bandara U, An VVG, Imani S et al.DOI: 10.1111/ans.17213
Evaluation of ocular surface and tear function - A review of current approaches for dry eye.ReviewIndian journal of ophthalmology · 2022Koh S, Rao SK, Srinivas SP et al.DOI: 10.4103/ijo.IJO_1804_21

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Wikidata facts

Subclass of: body fluid
Has part: sodium chloride
Location: eye
Image: Mary Magdalene Crying Statue.jpg

Show 7 more facts

produced by: lacrimal apparatus
subject has role: cleaning
Commons category: Tears
Commons gallery: Tears
facet of: crying
Unicode character: 💧
described by source: Explanatory Dictionary of the Living Great Russian Language

Sources (4)

via Wikidata · CC0

Article · Português

A lágrima ou fluido lacrimal é uma mistura das secreções das glândulas lacrimais (principal e acessórias), das células caliciformes e das Elas são secreções que limpam e lubrificam os olhos, através da lacrimejação, que é a produção das lágrimas, e são formadas por água, sais minerais, proteínas e gordura. Situações de fortes emoções, como tristeza ou alegria, prazer, admiração, além de bocejos e irritação também podem causar a lacrimejação, ou o choro, propriamente dito. Alem disso, a lágrima é uma importante barreira física do sistema imunológico para proteção do olhos e nos seres humanos, o revestimento da película lacrimal do olho é conhecido como o filme lacrimal.

Abstract from DBpedia / Wikipedia · CC BY-SA