Презентация, доклад по биологии по теме Eye structure

(answer will be a new term)
ASK each team!!!

transparent part of eye that covers iris
Retina - the innermost layer of eye containing Iight-sensitive receptors.

processes using eyes. Eye is a complicated organ. It consist of three layers: Inner, outer and middle.

layer. It protects eyes from damage. Cornea is a transparent layer.
Middle layer consists of three parts: iris, ciliary body and choroid. Ciliary body holds the lens of an eye. Lens focuses incoming light. Iris has eye colouring pigments. In the middle of the iris there is an opening called pupil
Light enter through this opening. Choroid has blood vessels. They bring nutrients to the eye.
Inner layer is a retina. It has cells called receptors. They receive information from outside and transfers it to our brain.

we should take care of it?
2. Which eye structure determines a person's eye colour?
3. What are similarities of eyes and camera?
Methods and materials: Sivtsev table, tape-measure

on the wall. 10th line of the table should be on the level of your eyes.
Illuminate the table with the lamp.
Stand 5 meters (can vary, cause small Sivtsev table) away from the table. Close one eye and read which letters, aren’t there many rows on the table. If you do not see the letter come closer for 0.5 meters. Repeat until you see the letter.
Measure your eyesight using formula: V=d/D where, V - eyesight , d - distance, when you see the letter, D - distance, where you started the measurement

to retina?
2. How do eyes take nutrients?
3. Why do human have two eyes?

from each team
3) Start from 3 minute (play 3-4 min)
4) Winner is who find more