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Biologie voor jou | 3 havo/vwo | Samenvatting 6.1 t/m 6.5 | Waarneming, regeling en gedrag

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Biologie voor jou | 3 havo/vwo | Samenvatting 6.1 t/m 6.5 | Waarneming, regeling en gedrag 6.1 - Reageren op omgeving 6.2 - De huid 6.3 - Neus en tong 6.4 - De oren 6.5 - De ogen

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VWO / Gymnasium
Course
Biologie








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Institution
Secondary school
Level
VWO / Gymnasium
Course
Biologie
School year
1
All documents for this subject (6073)

Document information

Uploaded on
May 17, 2022
Number of pages
2
Written in
2021/2022
Type
Summary

Subjects

  • biologie voor jou
  • biologie
  • bvj
  • hoofdstuk 6
  • reageren op omgeving
  • de huid
  • neus en tong
  • de oren
  • de ogen
  • 61
  • 62
  • 63
  • 64
  • 65

Content preview

6.1 Reageren op omgeving

Prikkel = invloed uit milieu op organisme

Impuls = elektronisch bericht vanuit zintuigen

Zintuigen  Hersenen  Spieren + Klieren

1) Gevoelszenuwen

2) Bewegingszenuwen

- Alle zintuigen samen vormen zintuigenstelsel
- Het zenuwstelsel bestaat uit:
Hersenen + ruggenmerg (centrale zenuwst.) + zenuwen
- Drempelwaarde = kleinste prikkelsterkte die impuls veroorzaakt
- Adequate prikkel = type prikkel waar zintuigcel gevoelig voor is



6.2 De huid

Huid bestaat uit 3 lagen

1) Opperhuid

- Hoornlaag = dode verhoornde celresten  bescherming

- Kiemlaag = levende cellen  vullen hoornlaag aan

- Ook haarzakje met talgklier



2) Lederhuid

- Zintuigen (tast-, druk-, warmte-, koude,-)

- Pijnpunten

- Zweetklieren

- Haarspiertjes en bloedvaten



3) Onderhuid bindweefsel

- Opslag vet (reserves + isolatie)
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