Summary
Summary lewenswetenskappe graad 12 reseptore
- Course
- Lewenswetenskappe
- Institution
- 12
opsomming van die oor en oog vir graad 12
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Available practice questions
Flashcards
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Some examples from this set of practice questions
1.
sklera
Answer: sterk, wit, onelastiese bindweefsellag wat die buitenste laag van die oogbal uitmaak en tot by die deursigtige kornea aan die voorkant strek
2.
funksies van sklera
Answer: beskerm inwendige dele van die oog help om die ronde vorm van die oogbal te behou dien as vashegtingsplek vir spiere
3.
kornea
Answer: voorste deursigtige gedeelte van die sklera, wat meer konveks as die res van die oogbal is
4.
kornea funksies
Answer: laat ligstrale deur na die binneste lae van die oog kromming veroorsaak breking van inkomende ligstrale
5.
choroied
Answer: dun, donker gepigmenteerde, bloedvatryke laag
6.
choroied funksies
Answer: pigment absorbeer oortollige ligstrale om inwendige weerkaatsing wat dowwe beelde veroorsaak, te voorkom bloedvate voorsien selle van suurstof en voedingstowwe
7.
siliaarliggaam
Answer: \'n verdikking van die voorste gedeelte van die choroied wat uit onwillekeurige spiere, bekend as siliaarspiere bestaan. die siliaarliggaam is met suspensoriese ligamente aan die lens geheg
8.
siliaarliggaam funksies
Answer: trek saam en verslap om die kromming van die lens gedurende oogakkommodasie te verander
9.
iris
Answer: \'n Ronde, gekleurde struktuur wat soos \'n gordyn na die middel van die oog hang. Kom aan die voorkant van die lens voor en is aaneenlopend met die choroied. Besit pigmente wat die kleur aan die oog gee, asook twee stelle onwillekeurige spiere, die radiale-en kringspiere. in die middel van die iris is \'n opening, die pupil, waardeur ligstrale die oog binne kom.
10.
iris funksies
Answer: Reguleer die hoeveelheid lig wat die oog binnekom, deur die grootte van die te beheer
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