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=Introduction To Rod Cells= toc

Rod Cells You wake up in the middle of the night, you look around in the pitch black and make out your room. Do you ever wonder how you can see in the dark or what makes it do it? That’s your ** rod cells ** in the process. Another name for rod cells is eye cells. Rod cells are good for seeing in the dark and that is why they are important for you and your vision. Rod cells aren't the only important cell in your eye. Have you ever heard of cone cells, no not ice cream cones, cone cells, also located in the eye. Knowing the important parts of the eye is very important. It is also very important to know where your rod cells are stored in your body too! You’re probably wondering what my rod cells do? The rod cells and cone cells are there to help you see. Rod cells and cone cells can have endless similarities but do you ever wonder if there are any difference? Of course there is!

=Functions Of The Rod Cell=



There are many parts of the eye. Such as the cornea, the **cornea** is in the front of the eye. Another example, is the **retina**. The retina is the innermost layer of the eye and the rod cells can be found near there. Have you ever heard of a **cone cell** ? A cone cell is another cell in the eye. A cone cell is important for seeing color and/or vision. Further more, a rod cell is just like a cone cell. A cone cell may be important for vision but a rod cell is very important for seeing in the dark.

=Important Parts Of The Eye=

The rod cell is a cell located in the eye. There are 126 million rod cells in the eye. It’s the rod cells job to see in the dark. The corneal function is to let light pass through the eye. On the other hand, seeing detail is the cone cell's job. Before a retina sees an image, it goes through the **lens,** a structure in the eye that focuses on the light. After it passes through the lens, it wounds up in the retina that flips the image upside down. Than the brain flips it back right-side up again.

=Where Are The Rod Cells Stored?=

Rod cells and cone cells are stored in the back of the eye. In the front of the eye though, there is the cornea. The cornea is where light first hits the eye. The light then travels through the ** pupil ** next. Yet, there are only 6 million cone cells compared to 126 million rod cells. On the other hand, there are three types of cone cells, green, red, and blue. Blue is the most sensitive of the cone cells says expert Eugene Ackerman.

=The Difference Between Rod Cells And Cone Cells=

Although the rod cells are better than the cone cells at looking in the dark. There are many differences between the cone cell and the rod cell. First off, there are way more rod cells than cone cells, to be more specific 120 million more rod cells. The rod cells are different from the coe cells because they can see in the dark. But on the other hand, they are stored in the retina.Cone cells are very different from the rod cell, for example, they are not as sensitive as the cone cells to the colors red, blue, and green.



=Why Do People Wear Glasses?=

Do you ever wonder why some people have to wear glasses and come do? It’s because we are all different! The lens is a big part of why people have glasses. For example, the curviness of the lens can cause people to have glasses. Another way people may need glasses is because their lens are either too strong or too weak.

On the other hand, diseases in the eye may cause people to have glasses. For instance, ** Astigmatism ** is a diseased in the cornea. As a result of the unevenness in the cornea, people with Astigmatism are able to see if they have glasses. People over the age of 65 are in risk of the disease, if not cured this disease can cause blindness.

=Conclusion=

Can you imagine life without your rod cells? Imagine no black and white in your life. Or without your cone cells seeing the color and detail in everything. Your rod cells are very important because they help you see in the dark. Imagine if you couldn't see? It would be very difficult to know where you are going. Cone cells are important too because everything would be colorless without them. Why do you think the rod cells are important? I think that knowing about them is very important, knowing how your eyes see the image and what happens.

=References=

Works Cited “The Eye.” Science Aide. N.p., n.d. Web. 18 Dec. 2014. The Eye: Structure and Function Discovery Education, 2004. Full Video.Discovery Education. Web. 19 December 2014. . Parker, Steve, and David West. Brain Surgery for Beginners and Other Major Operations for Minors. Brookfield: Millbrook, 1995. Print. Purves D, Augustine GJ, Fitzpatrick D, et al., editors. Neuroscience. 2nd edition. Sunderland. “Neuroscience. 2nd edition.” Neuroscience. 2nd edition. Sinauer Associates, Inc., 2015. Web. 21 Jan. 2015. . = “Rod Cells/Eye Cells.” University of Bristol. U of Bristol, n.d. Web. 19 Dec. 2014. <http://www.chm.bris.ac.uk/webprojects2002/upton/references. =