LENS CORTEX Meaning and
Definition
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Lens cortex refers to the outermost layer or zone of the crystalline lens inside the human eye. The lens cortex is an integral part of the lens and plays a crucial role in its structure and function.
The lens is a transparent, biconvex structure situated behind the iris and the pupil. It is responsible for refracting light entering the eye, thus allowing for proper focusing of images onto the retina. The lens consists of three distinct regions: the lens nucleus, lens cortex, and lens capsule.
The lens cortex makes up a considerable portion of the lens and is composed of elongated, transparent, fiber-like cells called lens fibers. These fibers are arranged in concentric layers and run parallel to the lens surface. The lens cortex contains an abundance of water and proteins, which give it its characteristic transparency and refractive properties.
The lens cortex is responsible for the flexibility and accommodation ability of the lens. Accommodation refers to the lens' capability to change its shape and refractive power to focus on objects at different distances. The lens cortex plays a significant role in this process as the contraction and relaxation of the ciliary muscles surrounding the lens cause changes in tension that alter the shape of the lens cortex. This allows for adjustments in the lens' refractive power and facilitates clear vision at various distances.
In summary, the lens cortex is the outer layer of the crystalline lens, composed of transparent fibers that give the lens its flexibility and refractive capabilities for proper focusing and accommodation.
Common Misspellings for LENS CORTEX
- kens cortex
- pens cortex
- oens cortex
- lwns cortex
- lsns cortex
- ldns cortex
- lrns cortex
- l4ns cortex
- l3ns cortex
- lebs cortex
- lems cortex
- lejs cortex
- lehs cortex
- lena cortex
- lenz cortex
- lenx cortex
- lend cortex
- lene cortex
- lenw cortex
- lens xortex
Etymology of LENS CORTEX
The term "lens cortex" consists of two parts: "lens" and "cortex".
1. Lens: The word "lens" originates from the Latin word "lentilis", referring to a lentil. The lens of the eye was given this name because of its similar shape to a lentil. Over time, "lens" came to be used in optics to describe a piece of glass or other transparent material with curved surfaces that refracts light, similar to the function of the eye lens.
2. Cortex: "Cortex" comes from the Latin word "corticalis", which means "of the bark" or "outer layer". It was first used to refer to the outer layer of an organ, particularly the brain. In the context of the lens, "cortex" refers to the outer layer of the lens.
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