Medical Definition of Nervous tunic of eyeball

1. Light sensitive layer of the eye. In vertebrates, looking from outside, there are four major cell layers: (i) the outer neural retina, which contains neurons (ganglion cells, amacrine cells, bipolar cells) as well as blood vessels, (ii) the photoreceptor layer, a single layer of rods and cones, (iii) the pigmented retinal epithelium (PRE or RPE), (iv) the choroid, composed of connective tissue, fibroblasts and including a well vascularised layer, the chorio capillaris, underlying the basal lamina of the PRE. Behind the choroid is the sclera, a thick organ capsule. In molluscs (especially cephalopods such as the squid) the retina has the light sensitive cells as the outer layer with the neural and supporting tissues below. See: retinal rods, retinal cones, rhodopsin. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Nervous Tunic Of Eyeball

nervous disorder
nervous dyspepsia
nervous exhaustion
nervous hit
nervous indigestion
nervous lobe
nervous lobe of hypophysis
nervous part of retina
nervous prostration
nervous strain
nervous system
nervous system physiology
nervous systems
nervous tissue
nervous tunic of eyeball (current term)
nervously
nervousness
nervousnesses
nervular
nervule
nervules
nervure
nervures
nervus
nervus abducens
nervus accessorius
nervus acusticus
nervus alveolaris inferior
nervus ampullaris anterior

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