4.3 hormones and puberty

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BiologieMiddelbare schoolvwoLeerjaar 2,3

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Slide 1 - Diapositive

Asexual
Both: asexual and sexual
Sexual

Slide 2 - Question de remorquage

In changing environments, which is better for a species?
A
Sexual reproduction
B
Asexual reproduction

Slide 3 - Quiz

Some plants can be regrown completely from a single branch. Is this sexual or asexual reproduction?
A
Sexual reproduction
B
Asexual reproduction

Slide 4 - Quiz

Female reproductive system
Male reproductive system
Fallopian Tubes
Testicles
Prostate
Uterus
Seminal vesicle
Ovaries

Slide 5 - Question de remorquage

Learning goals 4.3
You will learn..
  • What are hormones?
  • Which hormone glands are present in the human body and which hormones do they produce?
  • Which hormones affect the reproductive system and how?

Slide 6 - Diapositive

What are hormones?
  • Function: growth, glucose level, heart rate etc.
  • Made by: glands
  • Transportation: by blood
  • Transmits the message

key-lock mechanism

Slide 7 - Diapositive

Slide 8 - Diapositive

Hormones
= regulatory substances that control processes in the body
  • They do that by giving signals to organs (messengers)
  • Produced by hormone glands from the endocrine system
  • Transported by the circulatory system to get them where they need to be
  • Effect can have a duration of hours up until months/years
Dutch for glands = klieren
Messengers
Hormones are messengers. However, that was the task of the nervous system, right? The difference: the nervous system is for the fast messages (to help you feel and move), the hormones are for the slower messages (to help you grow and change). 

Slide 9 - Diapositive

What is puberty?

  • Experiencing
  • starts 8-13 
  • pituitary gland

Slide 10 - Diapositive

Physical changes

  • primary sexual characteristics = visible from birth


  • secondary sexual characteristsic = develops between the ages of 10 and 16 (puberty)

Slide 11 - Diapositive

Sex hormones
  • Hormones that work in the reproductive system are called sex hormones
  • Different amounts are produced in males and females
  • Production of these leads to the physical change of male and female bodies
  • This production happens in many stages of life!

Slide 12 - Diapositive

How and which hormones affect puberty?
  • Changes of puberty
  • Gonadrotropin-releasing hormone
  • LH and FSH
  • Both
  • For guys --> testes, production
  • In girls --> stimulate, ovaries, oestrogen
  • Pregancy 

Slide 13 - Diapositive

Doing work 
Make exercises 10-13, pg. 110 -112. Done? Read chapter 4.4!

Slide 14 - Diapositive