The cow eye Aqueous humor – clear fluid helps the cornea keep its rounded shape. – yellow on pict Optic disk – the place where all nerves from the retina.

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Presentation transcript:

The cow eye Aqueous humor – clear fluid helps the cornea keep its rounded shape. – yellow on pict Optic disk – the place where all nerves from the retina join to form the optic nerve. (blind spot ) (small spot on the back of the retina). Cones – light sensitive cells in the retina that are responsible for color vision in bright light.

Cornea – a tough clear covering over the iris and pupil that helps protect the eye. Iris – a colored muscle that controls how much light enters the eye (through the pupil). Lens – a clear flexible structure that makes an image on the eye’s retina.

Optic nerve – the bundle of nerve fibers that carry information from the retina to the brain. Pupil – The dark oval in the center of a cow’s iris that lets light into the inner eye. Retina –the layer of light-sensitive cells at the back of the eye that detects images from the lens.

Rods – a second kind of light-sensitive cell in the retina Rods – a second kind of light-sensitive cell in the retina. Rods repond to dim-light to form a black and white image. Sclera – the thick, tough, white outer covering of the eyeball. Tapetum – the colorful, shiny blue material located behind the retina. It reflects light back through the retina. Vitreous humor – the clear liquid that gives the eyeball its shape. This liquid fills the sclera.

Ciliary muscles – The ciliary muscles adjust the shape of the lenses in order to focus the eyes. They control the shape of the lens and allow us to change from distance to close vision.

Vitreous humor

The Cow Eye 8 min student fresh eye dissection 15 min instructor dissection interactive eye from exploratorium 10 min cow eye dissection