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There are two kinds of photoreceptor cells: rod cells and cone cells.  The cone cells have higher resolution, and are used for distinguishing colors and shape.  They are abundantly located around the 黄斑, which is in the center of the retina.  Meanwhile, the rod cell, which has less resolution, are located around the periphery of the retina.
There are two kinds of photoreceptor cells: rod cells and cone cells.  The cone cells have higher resolution, and are used for distinguishing colors and shape.  They are located around the macula, which is in the center of the retina.  Meanwhile, rod cells, which have less resolution, are located around the periphery of the retina.<br>
 
Therefore, the eyesight resolution is not constant throughout the retina.  Because the cone cells are dense in the center of the retina and,  adjust is made so that the light from the object to be watched reaches the 黄斑.  Try reading this material without moving your neck or eye.  You can easily tell that the resolution within your visual field is not constant.
 
赤、緑、青の三原色にもっとも感受性の高い錐（状）体細胞がそれぞれあると考えられている。この三種の錐（状）体細胞が刺激される割合により色が感覚される。


Therefore, eyesight resolution is not constant throughout the retina.  This is because the cone cells are dense in the center of the retina and,  adjustment is made in order for the light from the object being watched to reach the macula.  Try reading this material without moving your neck or eye.  You can easily tell that the resolution within your visual field is not constant.<br>


There are 3 kinds of cone cells for specific sensitivity to 3 colors: red, green and blue.  The ratio of stimulation to each cell determines the color being sensed.<br>


{{QuizTitle}}
{{QuizTitle}}
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//LEVEL:3
//LEVEL:3
//RAND
//RAND
網膜の中心部に多い視細胞は、 {=錐体 ~杆体} 細胞である。
The {=cone~rod} cells are rich in the center of the retina.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
網膜の周辺部に多い視細胞は、 {~錐体 =杆体} 細胞である。
The {~cone~=rod} cells are rich in the periphery of the retina.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
錐(状)体細胞は、網膜の {=中心部 ~周辺部} に多い。
The cone cells are rich in the {=center~periphery} of the retina.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
杆(状)体細胞は、網膜の {~中心部 =周辺部} に多い。
The rod cells are rich in the {~center~=periphery} of the retina.


//LEVEL:2
//LEVEL:2
//RAND
//RAND
錐(状)体細胞の解像度は、 {~低い =高い} 。
The resolution of the cone cells is {~low~=high}.


//LEVEL:2
//LEVEL:2
//RAND
//RAND
杆(状)体細胞の解像度は、 {=低い ~高い} 。
The resolution of the rod cells is {=low~high}.


//LEVEL:3
//LEVEL:3
//RAND
//RAND
視力は、網膜全体でほぼ等しい。　 {~正 =誤}  
The eyesight resolution is homogeneous throughout the retina. {~true~=false}


//LEVEL:3
//LEVEL:3
//RAND
//RAND
光の三原色は、赤、青、黄である。　 {~正 =誤}
There are cone cells which are specifically sensitive to red, green and yellow. {~true~=false}
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2014年11月18日 (火) 21:47時点における最新版

There are two kinds of photoreceptor cells: rod cells and cone cells. The cone cells have higher resolution, and are used for distinguishing colors and shape. They are located around the macula, which is in the center of the retina. Meanwhile, rod cells, which have less resolution, are located around the periphery of the retina.

Therefore, eyesight resolution is not constant throughout the retina. This is because the cone cells are dense in the center of the retina and, adjustment is made in order for the light from the object being watched to reach the macula. Try reading this material without moving your neck or eye. You can easily tell that the resolution within your visual field is not constant.

There are 3 kinds of cone cells for specific sensitivity to 3 colors: red, green and blue. The ratio of stimulation to each cell determines the color being sensed.

Challenge Quiz

1.

The cone rod cells are rich in the center of the retina.

2.

The cone rod cells are rich in the periphery of the retina.

3.

The cone cells are rich in the center periphery of the retina.

4.

The rod cells are rich in the center periphery of the retina.

5.

The resolution of the cone cells is low high .

6.

The resolution of the rod cells is low high .

7.

The eyesight resolution is homogeneous throughout the retina. true false

8.

There are cone cells which are specifically sensitive to red, green and yellow. true false

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