TT2 4.2 Puberty

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

Program

• Learning objectives
  
• Video hormones --> 1.5 min.
  
• Explanation basic material 2 --> Puberty
  
• Making assignments
  
• Closing --> checking learning objectives

Settle down and get your laptop 

Sleep de onderstaande secundaire geslachtskenmerken naar het juiste vak (zie boven).

Secondary sex characteristics boy

Secondary sex characteristics both

Secondary sex characteristics girls

Breasts

growthspurt

lower voice

wider hips

armpit hair

more muscle growth 

pubic hair r

facial hair 

growth labias 

What type of reproduction involves two parents?

1. Asexual reproduction
2. Binary fission
3. Budding
4. Sexual reproduction

external sexual organs woman

1

2

3

4

5

outer labia

inner labia

vagina opening

clitoris

urethra opening

Term vulva

Sensitive for stimuli.
Development of egg cells
Development embryo
Hier komt het sperma bij de geslachtsgemeenschap.
Transport egg cells
Excretion fluid during sexual arousal

Elk orgaan van het vrouwelijke voortplantingsstelsel heeft zijn eigen taak.

Kies bij elke taak het juiste orgaan.

Ovaries

Inner labia

Uterus

clitoris

Fallopian tube

vagina

unit  4 reproduction

• 4.1 Genitals 
• 4.2 Puberty
  
• 4.3 Becoming fertile
  
• 4.4 Getting pregnant
  
• 4.5 Sexuality
  
• 4.6 Safe sex
  
• 4.7 More contraceptives
  
• 4.8 The birth

Learning objectives 4.2 

• You can explain what the function of hormones is
  
• You can describe the physical and mental changes during puberty

Stages of life

Puberty = the transition from child to adult.

Development = change

• physical development
• Intellectual development

Sex characteristics

• Primary: present and visible from birth 
• Secondary:  develops during puberty 

Hormones

• Hormones = substances that regulate the functioning of organs
• Flow through the bloodstream --> only work in places where the organ/tissue is sensitive to it.
• Produced in hormone glands

Pituitary gland

• Hormone gland
  
• produces hormones that ensure:
• - growth spurt
• - production of sperm cells /
  
• maturation of eggs
  
• - activates ovaries / testes to produce sex hormones -> secondary sexual characteristics

The beginning of puberty

Pituitary gland (hormone gland) activates the

sex organs --> make sex hormones

Testosterone = 

male  sex hormone

Oestrogen =

female sex hormone

What are sexual characteristics?

• Primary sexual characteristics are present from birth
  
• Secondary sexual characteristics are developed from puberty
  

You become fertile during puberty

Boy - sperm production starts

Girl - menstruation (egg maturation)

When are you a teenager?

The mental and physical changes that you go through during puberty are caused by hormones.

The pituitary gland is a hormone gland that produces hormones that regulate the functioning of the hormone glands in the testicles and ovaries. 

These produce the sex hormones estrogen and testosterone.

Testicles produce testosterone --> sperm cells

Ovaries produce estrogen --> egg cells

Emotional changes

• Social
  
• More independent
  
• Insecure
  
• Sexuality

Homework

Reading 4.2

Complete assignments 1 to 3 and 5 to 8

You can explain what the function of hormones is

You can describe the physical and mental changes during puberty

Klaar: puzzel laten maken

Leerdoelen 4.2 

• You can explain what the function of hormones is
  
• You can describe the physical and mental changes during puberty

What are hormones?

1. A certain type of blood cell
2. Substances that regulate processes in your body
3. Substances that act on hormone glands
4. Odorants that are excreted

What is the function of hormones?

1. Hormones provide nutrition to many hormone glands
2. Hormones ensure the production of oxygen
3. Hormones regulate the functioning of organs that are the target organ of this hormone
4. Hormones ensure rapid responses to certain stimuli

Blood contains hormones.
Which blood product contains the most hormones?

1. platelets
2. blood plasma
3. red blood cells
4. white blood cells

What is mental development?

1. The growth and weight of an organism
2. Changing your mind
3. When an organism learns new things
4. Change in the structure of an organism