The vitreous humor helps to keep the retina firmly in place, according to WebRN-MacularDegeneration.com. Additionally, the vitreous humor fills much of the eye, allowing light to pass through the lens to the retina and helping the eye to keep its round shape. The space the vitreous humor fills is called the vitreous body.Know More
Healthline explains that vitreous humor is composed primarily of water, but other substances, such as salts, sugars and collagen, are also constituents of the gel. As it is necessary for light to penetrate the substance, it must remain very clear. The vitreous humor is a static collection of fluid. This means that it is not replenished or replaced by the human body. By contrast, the aqueous humor, which resides near the front of the eye, is routinely replaced. This means that if some substance enters the vitreous humor, usually blood, fibers or blood vessels, it remains there until removed surgically.
According to WebRN-MacularDegeneration.com, the vitreous humor can become less gel-like and more liquefied as people age. This liquefaction can cause fibers from the retina to detach and float freely through the vitreous humor. These free-floating fibers sometimes become noticeable in people's field of vision, appearing as dust, strings, dots or cobwebs, and physicians call them floaters.Learn more about Human Anatomy
The function of the glottis is to make several voicing sounds between the vocal folds when they vibrate. Voiceless consonants include the English h, f, s, p, t and k sounds. The glottis functions when vocal folds are narrowed yet apart, according to Healthline.Full Answer >
The duodenum is an organ located just below the stomach and its functions include the continuation of the digestion process and the regulation of gastric emptying. The organ is a part of the small intestine, and it is found in most vertebrates, such as mammals, birds and reptiles.Full Answer >
Rods and cones function as photoreceptors in the retina of the eye, turning visible light into neuronal signals, which are sent to the brain. This process is called transduction. Rods and cones perform at different wavelengths and sensitivities allowing detailed perception of light and color.Full Answer >
The fovea centralis is a depression-like area located at the centermost part of the retina of the eye. Only cone cells are located in the fovea centralis, and each cone cell is attached to a ganglion cell. This dip or depression in the smallest part of the retina is the location in which the most acute vision takes place.Full Answer >