the aqueous humor is located in the ciliary epithelium in a cow eye.
the aqueous humor is located in the ciliary epithelium in a cow eye.
where is the aqueous humor located in a cow eye?
ciliary epithelium
the ciliary body is a ring-shaped thickening of tissue inside the eye that divides the posterior chamber from the vitreous body. it contains the ciliary muscle, vessels, and fibrous connective tissue. folds on the inner ciliary epithelium are called ciliary processes, and these secrete aqueous humor into the posterior chamber. the aqueous humor then flows through the pupil into the anterior chamber.
ciliary body
dr. david m. maurice (1922-2002), an eye specialist and semi-retired adjunct professor at columbia university, proposed that rem sleep was associated with oxygen supply to the cornea, and that aqueous humor, the liquid between cornea and iris, was stagnant if not stirred. among the supportive evidences, he calculated that if aqueous humor was stagnant, oxygen from iris had to reach cornea by diffusion through aqueous humor, which was not sufficient. according to the theory, when the animal is awake, eye movement (or cool environmental temperature) enables the aqueous humor to circulate. when the animal is sleeping, rem provides the much-needed stir to aqueous humor. this theory is consistent with the observation that fetuses, as well as eye-sealed newborn animals, spend much time in rem sleep, and that during a normal sleep, a person's rem sleep episodes become progressively longer deeper into the night. however, owls have rem sleep, but do not move their head more than in non-rem sleep and is well known that owls' eyes are nearly immobile.
rapid eye movement sleep