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Презентация, доклад на тему Разработка презентаций к уроку на английском языке по биологии Строение глаза 8 класс
Содержание
- 1. Разработка презентаций к уроку на английском языке по биологии Строение глаза 8 класс
- 2. Eye structure
- 3. Lesson topic:Eye structure Aim: to study the structure of the organ of vision
- 4. Eye it is a sensory
- 5. Auxiliary structures of eye
- 6. Eyebrows warn for falling in the
- 7. Basic functions of eye :
- 8. An eye consists of: 1. corneas; 2.
- 9. Terminology
- 10. An eye consists of three layersoutdoormiddle internal
- 11. A periblast consists of sclera and cornea.
Eye structure
Слайд 4 Eye it is a sensory organ (organ of the
visual system) of man and animals, possessing ability to perceive an electromagnetic radiation in the light range of lengths of waves and providing the function of sight.
Слайд 6 Eyebrows warn for falling in the eyes of sweat flowing
down from a forehead.
Eyelids carry out mechanical defence of eyeball the Periodic closing and breaking of eyelids (blinking) provide even distribution of tear liquid on the surface of eyeball.
Eye-lashes I provide additional protecting of eyeball from a dust.
Eyelids carry out mechanical defence of eyeball the Periodic closing and breaking of eyelids (blinking) provide even distribution of tear liquid on the surface of eyeball.
Eye-lashes I provide additional protecting of eyeball from a dust.
Слайд 7
Basic functions of eye :
1. optical system, projecting an image;
2.
system perceiving and "encoding" obtained information for a cerebrum;
3. "attendant" system of life-support.
3. "attendant" system of life-support.
Слайд 8An eye consists of:
1. corneas;
2. front chamber of eye;
3. irises;
4. pupil;
5. lens of the eye;
6. ciliary string-course;
7. vitreous body;
8. retinas;
9. sclera;
10. vascular shell;
11. visual nerve
Слайд 11A periblast consists of sclera and cornea. A sclera is a
white layer. A sclera protects eyes from damages. At the front the eyes of sclera form a transparent layer, cornea.
A middle layer consists of three parts: iris, ciliary body and vascular shell.
A retina is an internal layer of eye. Here are cages the called receptors. The receptors of eye get visual information and pass to it our brain.
outdoor
middle
internal
