What is the only part of the blood that does not reach the human body contains many secrets that make us fascinated by the creation of God Almighty, and despite the progress and development of science, there are still many surprising and surprising things, as the human body consists of many organs and systems that work with each other according to A specific mechanism, and the reference site in this article will provide us with an answer to our question, as well as explain to us about the cornea, its components, its mechanism of action, and what its importance and functions it performs.
What is the only part of the blood that does not reach?
As we mentioned earlier that the human body works by many organs and organs, and these organs must continue to work with the energy that reaches them so that the person can carry out his functions, and this energy is taken through the blood, What is the only part of the blood that does not reach can reach all organs except for one part in the body, which is the cornea of the eye Where it does not contain blood vessels and derives nourishment through tears and fluids in the anterior chamber of the eye, it also obtains oxygen through the air directly, and therefore the answer to our question is:
- Cornea.
- cornea installation
The cornea is the transparent part that covers the front section of the eye and covers the pupil, and it consists of five outer layers called the epithelium, which contains the nerve endings coming from the cells that cover the cornea, which transport food to it and which protects it from the arrival of dust and harmful substances, and then comes The two-layer consists of a network of fibers, then the middle layer is called the stroma layer and consists of fibers called collagen and is arranged regularly and geometrically that gives the cornea transparency and if this layer is damaged, spots appear in the eye and cause a defect in vision.
The only living cells in the body that aren’t directly served by blood vessels are those of the cornea in the eye. Oxygen and nutrients instead diffuse directly from the tear fluid on the outside and the aqueous humour (the thick watery substance between the lens and the cornea) on the inside, What is the only part of the blood as well as along the nerve fibres that are connected to the cornea.
One of the problems with contact lenses is that they reduce the oxygen supply from the outside. Even with gas-permeable lenses, What is the only part of the blood this can cause corneal neovascularisation, where blood vessels grow into the cornea. This problem is reduced or eliminated by the newest silicone hydrogel lenses. As well as the cornea, other areas of the body that don’t have blood vessels include hair, nails, tooth enamel and the outer skin layers.
Corneal function
The cornea focuses the light so that the person can see clearly, as it refracts the light coming to the eye through the layers that work together and reflects it to the lens of the eye that focuses it on the retina. The method of taking pictures in the lens of the camera, What is the only part of the blood that does not reach and also works to protect the eye from disease and the entry of germs into it through the thin lacrimal layer that covers it, and it also works to remove ultraviolet rays that can destroy the eye and cause damage to the lens and retina.
At the end of this article, What is the only part of the blood that does not reach we have answered our question, what is the only part that the blood does not reach, we have learned about the structure of the cornea, its mechanism of action, and what are its functions and importance for humans.
