Essays Tagged: "Photoreceptor cell"

The Function of the Human Eye.

he middle. Within the choroid, the retina forms the innermost layer of the eyeball and contains the photoreceptor cells. Information from the photoreceptors leaves the eye at the optic disc, where the ... round.The human retina contains about 125 million rod cells and 6 million cone cells, two types of photoreceptors named for their shapes. They account for 70% of all sensory receptors in the body, a ...

(5 pages) 128 1 4.3 May/2003

Subjects: Science Essays > Biology > Human Biology

The eye

(2 pages) 65 2 3.9 Feb/2004

Subjects: Science Essays > Biology > Human Biology

Communication-Refraction in relation to the human eye

falseimages.Retina- Innermost layer of eye. Lines back of eyeball, containslight sensitive cells or photoreceptors and nerve fibres. Receives the lightand changes it in to electrical impulses that tra ... h brain. The region where the opticnerve leaves the eye is known as the blind spot because it has nophotoreceptors so it can't produce an image. Carries nervous signals fromretina to visual cortex of ...

(2 pages) 26 0 3.0 Jul/2004

Subjects: Science Essays > Biology > Human Biology

What Process light goes through as it enters the eye travels to the brain?

r retina in which you see nothing this is called your blind spot. On your retina are these receptor cells responsible for vision and they are your rods and cones. The rods respond to varying degrees o ... ods and barely any cones. The rods and cones then connect to these specialized neurons call bipolar cells, which have only one axon and on dendrite. In most cases many rods and cones attach to a singl ...

(2 pages) 13 0 4.0 Dec/2005

Subjects: Science Essays > Biology > Human Biology

ICP Industry

ecognition, motion direction, and colors and sends it to the brain. There are approximately 800,000 cells in the retina that acts as the eye?s photo-detectors, called rods and cones. In an individual ... s the eye?s photo-detectors, called rods and cones. In an individual with ?normal? vision, ganglion cells interpret messages from these cells. The ganglion cells then send these messages to the brain ...

(2 pages) 467 0 0.0 Feb/2008

Subjects: Science Essays > Biology > Human Biology