Yes, nosebleeds do tend to occur more often during pregnancy. Pregnancy can cause the blood vessels in your nose to expand, and your increased blood supply puts more pressure on those delicate vessels, causing them to rupture more easily. Although it's unpleasant and inconvenient, an occasional minor nosebleed is generally harmless.
The higher the energy of the gamma rays, the thicker the shielding made from the same shielding material is required. Materials for shielding gamma rays are typically measured by the thickness required to reduce the intensity of the gamma rays by one half (the half value layer or HVL).
Quick Answer. 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.