Creating a Passphrase A passphrase is simply a phrase or sentence that you use instead of a word or set of characters. Most password systems don't allow the space character, so you'll typically capitalize the first letter of each word instead.
This article is about the orbit, the anatomical space that contains the eye. For other uses of orbit or orbita see Orbit (disambiguation) and Orbita (disambiguation) .In anatomy, the orbit is the cavity or socket of the skull in which the eye and its appendages are situated.Orbit can refer to the bony socket, or it can also be used to imply the contents. In the adult human, the volume of the orbit is 30 mL, of which the eye occupies 6.5 mL.he orbits are conical or four-sided pyramidal cavities, which open into the midline of the face and point back into the head. Each consists of a base, an apex and four walls. There are two important foramina, or windows, two important fissures, or grooves, and one canal surrounding the globe in the orbit.
After passing through the cornea, aqueous humor and lens (anterior segment of the eye), light finally enters the vitreous (also called vitreous humor). is a transparent, jelly-like substance that fills the vitreous body. The vitreous body is the space created by the lens, retina and optic disc. This is also referred to as the posterior segment of the eye. The main functions of the vitreous are to transmit light to the retina, and to exert enough pressure to keep the retinal layers tightly pressed together. This pressure helps maintain the round shape of the eye so the lens can focus sharp images on the retina. The vitreous is very different from the aqueous humor.