Rod+Cells+-+IC

=toc Intro = It’s late at night, it is dark so you can only make out shapes of different objects, but what if you weren’t? Ca n you imagine not being able to see anything at all in the dark? Our eyes are made so we can see colors and shapes, rod cells specifically see black, white, and shades of gray.

 Rod cells (green) and cone cells (pink) =Why is the rod cell important/ what does it do? = The rod cell is important to our everyday life, it helps us see black, white, and shades of gray. The rod cell is part of our eyes, it is found in the retina along with cone cells which see color. According to the textbook rod cells work best in dim light, and turns light into nerve impulses. The difference between rod cells and cone cells is that rod cells have receptors that allow us to see white,black ,and shades of gray while cones have receptors that allow us to see color.



=What would happen if this cell did not exist = If this cell didn't exist it would be like having nyctalopia. Nyctalopia also called night blindness is a symptom of retinitis pigmentosa, loss of peripheral vision also requires extra time for the eyes to adjust from dim to bright light. Another thing that may happen according to Lorri Robinson is “You'd have excellent color vision and super sharp vision (cones), but you'd have no peripheral vision, no night vision, and no perception of small motions (rods).” The rod cell no matter how small or unimportant it may seem has a very big impact on the way we see.

=Are There Any Diseases That Affect this Cell = Imagine that you are at the store but instead of seeing everything normally it seems like you are looking down a dark tunnel and everything is slightly blurry at the end, this is how it is to have retinitis pigmentosa. Everything you see is slightly blurry or disorientated, this because this disease is slowly breaking down rods and cones. As of now there isn’t a foolproof way of fixing this disease, anyone who gets this will eventually go blind. Although can you imagine not being able to see everything correctly and all because of a disease that affects something smaller than a ping pong ball.

media type="youtube" key="eggmXiFxsEo" width="361" height="209" Video on what it would look like with retinitiss pigmentosa An xray of the eye without reinitis pigmentosa and with retinitis pigmentosa =What Is the Difference Between Rods and Cones =

Rods and cones although they work together, are completely different in what jobs they have to do. Rod cells work best in dim light while cones work best in bright light. Our vison without one or the other would be not the same at all.

-Works best in dim light || -Night Vision || <span style="font-family: 'Comic Sans MS',cursive;">-Sensitive to bright light || <span style="font-family: 'Comic Sans MS',cursive; line-height: 1.5;">-Sensitive to red, green, and blue light ||
 * || <span style="font-family: 'Comic Sans MS',cursive;">Function || <span style="font-family: 'Comic Sans MS',cursive;">Comments ||
 * <span style="font-family: 'Comic Sans MS',cursive;">Rod Cells || <span style="font-family: 'Comic Sans MS',cursive;">-Allows us to see shades of gray, white, or black
 * <span style="font-family: 'Comic Sans MS',cursive;">Cone cells || <span style="font-family: 'Comic Sans MS',cursive;">-Allows us to see color

=<span style="font-family: 'Comic Sans MS',cursive;">Conclusion =

<span style="font-family: 'Comic Sans MS',cursive;">We use our rod cells everyday, without them our sight wouldn’t be the same. Everyday activities would be harder to accomplish without rod cells. Our entire body works as team and even if one part isnt working we still feels its effects.

<span style="font-family: 'Comic Sans MS',cursive;">References
Works Cited

Andre, Rikard. Retinitis Pigmentosa Indoor Light. youtube. N.p., 22 Nov. 2012. Web. 29 Feb. 2016. <https://www.youtube.com/watch?v=tpy_y6dFZ2A>.

Eyes. Brain pop. Brain Pop, n.d. Web. 22 Feb. 2016. <https://www.brainpop.com/health/bodysystems/eyes/>.

How the Human Eye Works and Retinitis Pigmentosa. Ed. John J. Kelly. youtube. N.p., 13 Feb. 2011. Web. 23 Feb. 2016. <https://www.youtube.com/watch?v=-SjMRS8htyc>.

“Nyctalopia.” Wikipedia. N.p., 18 Feb. 2016. Web. 29 Feb. 2016. <https://en.wikipedia.org/wiki/Nyctalopia>.

Prentice Hall Science Explorer, comp. Human Biology and Health. Boston, MA: Preason Prentice Hall, 2007. Print. Science Explorer.

Structure of the Human Eye Discovery Education, 2004. Video Segment

Discovery Education. Web. 17/2/2016. <http://www.discoveryeducation.com>.