YR2-B6-LSN4

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

HAVE READY

• Your Macbook. (3 desktops)
• #1: sign up to this lessonup
• #2: ready to sign up to Google Classroom
• #3: ready to have your I-book open and ready to go.

BIOLOGY

YEAR 2 

LESSON 4

QUESTIONS ABOUT HOMEWORK/ LAST WEEK?

Where do the ova mature and get ready to be fertilised?

1. in the uterus
2. in the vagina
3. in the oviducts
4. in the ovaries

Where does the embryo develop during pregnancy?

1. in the uterus
2. in the vagina
3. in the oviducts
4. in the ovaries

Where does the ova mostly get fertilised?

1. in the uterus
2. in the vagina
3. in the oviducts
4. in the ovaries

Where does the penis fit in during intercourse (sex)?

1. in the uterus
2. in the vagina
3. in the oviducts
4. in the ovaries

Where are sperm cells produced?

1. in the penis
2. in the testicles
3. in the prostate
4. in the glans

Where is a man's urethra?

1. in the penis
2. in the testicles
3. in the prostate
4. in the glans

Where are liquids produced that are added to the semen?

1. in the penis
2. in the testicles
3. in the prostate
4. in the glans

Where is the most sensitive point of the male reproductive system?

1. in the penis
2. in the testicles
3. in the prostate
4. in the glans

TODAY

• What are primary and secondary sexual characteristics
• The phases of the menstrual cycle
• The stages of pregnancy and birth

PRIMARY SEXUAL CHARACTERISTICS

•  

• Example?

Sex organs a person is born with

SECONDARY SEXUAL CHARACTERISTICS

Sex characteristics appearing at:

• sexual maturity in animals

Other examples of animals?

Name an example of a secondary characteristic in one of the birds

SECONDARY SEXUAL CHARACTERISTICS

Sex characteristics appearing at:

• puberty in humans

Examples of changes during puberty?

MALES

Testostorone causes:

• growth of tesicles and penis
• incease size of muscles, vocal chords (deepening the voice)
• speeds up growth of facial and body hair
• Larger bodies
• sweat

FEMALES

Estrogen causes:

• growth of breasts
• speeds up growth of body hair (pubic area and underarm)
• widening hips
• ovulation and menstruation
• sweat

Primary sexual characteristics

Secondary sexual characteristics

Penis

Breasts

Change in voice

Bigger libia

Vagina

Broader hips

Testicle

Muscle growth

Beardgrow

Booklet 6 Ch. 2 Sections 4 & 5:

• Read pages 20-23 of your I-Book.
• Take some quick notes as you are reading.
• Discuss the notes you have taken in your groups.

• 4 minutes of silence and 2 minutes of talking.

• !!!! INSIDE VOICES AND ENGLISH PLEASE !!!!

Key Questions

Look at the key questions on  I-Book page 17, can you answer them?

What is the menstrual
cycle for?

MENSTRUAL CYLE

Phase 1 (days 1-5)

Uterus lining lets go of the uterus and comes out through the vagina with blood. 

The ''nest was not used and is removed by the woman's body to replace it. 

Phase 2 ( days 6-12)

Uterus is building a net layer of mucus (lining) the ovaries start ripening and getting ready to release a new ovum

Phase 3 ( days 13-15)

A new ova is released and set to move down the oviducts

Phase 4 ( days 16-28)

The ova move down the oviduct towards the uterus ready for fertilization. the lining of the uterus continues to grow and thicken to form the ''nest'' for the fertilized ova.

FERTILIZATION & PREGNANCY

Ova + sperm = zygote

Zygote copies = embryo

Embryo mitosis or meiosis?

Embryo in uterus = PREGNANT!

IVF in vitro fertilisation:

• Egg cells are removed from the woman.
• Spermcells are injected under a microscope.
• The zygote is left to divide into an embryo.
• The embryo's are placed back into the uterus. 

Miscarriage / Abortion:

• With a miscarriage the pregnancy is ended because the baby dies or the woman's body can't handle the pregnancy.

• With an abortion the woman chooses to end the pregnancy. (12 weeks or 20 weeks).

Homework for lesson 5

• Complete and hand in the hw for lesson 5 before class please:

- Complete the hw for lesson 5 to at least level 2 please.

- Make sure you have 100% on Flashcards, Learn & Match on the Glossary on Quizlet.

Please be honest, what did you think of this lesson?