LAMINA CRIBROSA Meaning and
Definition
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The term "lamina cribrosa" refers to a specific anatomical structure within the eye. It is a mesh-like layer of tissue located at the back of the eye within the optic nerve head. The optic nerve head is the point at which the optic nerve exits the eye and carries visual information to the brain.
The lamina cribrosa is composed of a complex arrangement of connective tissue fibers, which create numerous small openings referred to as cribriform plates. These plates allow for the passage of the individual nerve fibers from the retina, which eventually converge to form the optic nerve. The lamina cribrosa is responsible for maintaining the structural integrity of the optic nerve by providing support and serving as a conduit for the nerve fibers to exit the eye.
The lamina cribrosa is essential for maintaining the normal function of the eye. However, in certain conditions, such as glaucoma, there can be alterations to the lamina cribrosa that may lead to optic nerve damage. Changes in the lamina cribrosa can result in increased intraocular pressure and impair the flow of nutrients and waste products within the optic nerve head, potentially causing optic nerve degeneration and vision loss.
Understanding the structure and function of the lamina cribrosa is crucial for diagnosing and managing various eye disorders, particularly those that affect the optic nerve. Medical professionals, such as ophthalmologists and optometrists, regularly assess the lamina cribrosa when evaluating patients for conditions such as glaucoma, optic nerve tumors, or other optic nerve-related disorders.
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Cribriform plate of the ethmoid bone; a horizontal lamina from which are suspended the lateral mass, or labyrinth, on either side and the lamina perpendicularis in the center; it fits into the ethmoidal notch of the frontal bone and supports the olfactory lobes of the cerebrum, being pierced with numerous openings for the passage of the olfactory nerves.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for LAMINA CRIBROSA
- lamina cribrora
- lamina cribrosi
- lamina cribrose
- lamina cribrosc
- laminnacribrosa
- lambinacribrosa
- l amina cribrosa
- la mina cribrosa
- lam ina cribrosa
- lami na cribrosa
- lamin a cribrosa
- lamina c ribrosa
- lamina cr ibrosa
- lamina cri brosa
- lamina crib rosa
- lamina cribr osa
- lamina cribro sa
- lamina cribros a
Etymology of LAMINA CRIBROSA
The word "lamina cribrosa" is derived from Latin. "Lamina" means a thin plate or layer, while "cribrosa" means perforated or sieve-like. Therefore, "lamina cribrosa" can be translated to mean "perforated layer" or "sieve-like plate". In relation to human anatomy, the term specifically refers to a thin bony plate located in the eye that contains small openings for the optic nerve fibers to pass through.
