The word "conjunctiva" is spelled as /kənˈdʒʌŋktɪvə/ in IPA phonetic transcription. The first syllable is pronounced with a short "u" sound followed by a "n" and "j" sound. The second syllable is pronounced with a hard "g" sound followed by a short "u" sound and the "nct" cluster. The final syllable is pronounced with a short "i" sound followed by a "v" sound and the "ə" schwa sound. Conjunctiva is the thin layer of tissue that covers the eye and lines the inside of the eyelids.
The conjunctiva is a thin, transparent membrane that covers the anterior surface of the eyeball, excluding the cornea, as well as the inner surface of the eyelids. Acting as a protective layer, it serves a crucial role in maintaining the health and function of the eye.
Composed of a delicate epithelium and a thin layer of connective tissue, the conjunctiva serves several functions. Firstly, it secretes mucus and tears, thereby lubricating the eyeball and preventing dehydration. This lubrication ensures that the eyelids can smoothly open and close without causing discomfort. Secondly, the conjunctiva contains blood vessels that supply oxygen and essential nutrients to the outer layer of the eye. Additionally, it helps to maintain the eye's immune response by housing specialized cells that detect and neutralize potential foreign substances.
Irritation or infection of the conjunctiva can lead to a condition known as conjunctivitis, often referred to as "pink eye." This inflammation can cause redness, itchiness, discharge, and a gritty sensation in the eye. Conjunctivitis can be caused by allergies, viral or bacterial infections, or exposure to irritating substances such as smoke or chemicals.
In summary, the conjunctiva is a thin, transparent membrane that covers the eyeball and inner surface of the eyelids, providing lubrication, nourishment, and protection to the eye.
The mucous membrane covering the anterior surface of the eyeball (tunica conjunctiva bulbi, ocular c.) and lining the lids (tunica conjunctiva palpebrarum, palpebral c.).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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The word "conjunctiva" comes from Latin, derived from the word "conjunctor" which means a "joiner" or "connection". "Conjunctiva" itself is the feminine form of the adjective "conjunctivus", meaning "that which joins together". This is because the conjunctiva is a thin, transparent membrane that covers the white part (sclera) of the eye and lines the inner surface of the eyelids, essentially connecting and protecting these areas.