menstruation and menstrual cycle

menstruation

&

Menstrualcycle

Menstruation&

Menstrual Cycle

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

MENSTRUATION & MENSTRUAL CYCLE

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

MENSTRUATION & MENSTRUAL CYCLE

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

• What is menstruation?

The breakdown of uterine lining (endometrium) that will be discharge/shed through the vagina with a small amount of blood and some cells

• When does it begin?

When a girl reaches puberty (11 to 15 years)

• How long does this process occur?

5 to 7 days

MENSTRUATION & MENSTRUAL CYCLE

1 LO1: Students should be able to describe what is menstruation

2 LO3: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

THE MENSTRUAL CYCLE EXPLAINED BY DAY

MENSTRUATION & MENSTRUAL CYCLE

MENSTRUAL CYCLE

DAY 1MENSTRUATION

Blood & tissue

MENSTRUAL CYCLE

DAY 2MENSTRUATION

MENSTRUAL CYCLE

DAY 3MENSTRUATION

MENSTRUAL CYCLE

DAY 4MENSTRUATION

MENSTRUAL CYCLE

DAY 5MENSTRUATION

Bleeding last for about 5 days

MENSTRUAL CYCLE

DAY 6

Hormones

MENSTRUAL CYCLE

DAY 7

Follicle

MENSTRUAL CYCLE

DAY 8

Development of follicles

MENSTRUAL CYCLE

DAY 9

Development & maturation

MENSTRUAL CYCLE

DAY 10

MENSTRUAL CYCLE

DAY 11

Uterine lining thicken

MENSTRUAL CYCLE

DAY 12

Ready for embryo implantation

MENSTRUAL CYCLE

DAY 13

Blood and nutrient

MENSTRUAL CYCLE

DAY 14OVULATION

Hormones

MENSTRUAL CYCLE

DAY 14OVULATION

MENSTRUAL CYCLE

DAY 14OVULATION

MENSTRUAL CYCLE

DAY 14OVULATION

An egg is release!

MENSTRUAL CYCLE

DAY 14

Egg travel to the upper part of Fallopian tube

MENSTRUAL CYCLE

DAY 18

SPERM

MENSTRUAL CYCLE

DAY 19

SPERM

FERTILIZATION

MENSTRUAL CYCLE

DAY 20

ZYGOTE

MENSTRUAL CYCLE

DAY 21

ZYGOTE

MENSTRUAL CYCLE

DAY 22

ZYGOTE DEVELOP INTO EMBRYO

MENSTRUAL CYCLE

DAY 23

ZYGOTE DEVELOP INTO EMBRYO

MENSTRUAL CYCLE

DAY 24

EMBRYO IMPLANT ITSELF ON THE UTERINE LINING

MENSTRUAL CYCLE

DAY 27

IMPLANTATION IS COMPLETE!

WHAT IF THE EGG IS UNFERTILIZED?

MENSTRUAL CYCLE

DAY 14

Unfertilized egg

Hormones

MENSTRUAL CYCLE

DAY 25

Hormones

MENSTRUAL CYCLE

DAY 28

Hormones

AND SO THE CYCLE GOES ON …

MENSTRUAL CYCLE

DAY 1MENSTRUATION

Blood & tissue

MENSTRUAL CYCLE

DAY 2MENSTRUATION

AND ON …

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assesment

For further explanation, click

MENSTRUATION & MENSTRUAL CYCLE

The Menstrual CycleFertilization ovum meets sperm in oviduct - no menstruation occurs (uterine lining will not break down) Day 0-5

Menstruation occurs - uterine lining break down - the unfertilized ovum is discharged through the vagina

Day 5-14 Before ovulation: uterine lining starts to thicken ( blood supply--> food & O2) prepare for fertilized ovum

Day 14 Ovulation occurs - not occur during pregnancy

Day 14-28 (or Day 0)

Uterine lining becomes very thick - ready to receive fertilized ovum

Fertilization ?

Yes

No

MENSTRUAL CYCLE

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

2 groups of hormone

Group 1Control

changes in the ovary

(development of ovum)

Group 2Control

changes in the uterus

(thickening of endometrium)

MENSTRUATION & MENSTRUAL CYCLE

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

GROUP 1

• Gonadotrophin releasing hormone (GnRH)

•Follicle stimulating hormone (FSH)

•Luteinising hormone (LH)

MENSTRUATION & MENSTRUAL CYCLE

Ova

rian

even

tH

orm

one

leve

lsOvarian cycle

Days

FSH

LH

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

GROUP 2

• Oestrogen

•Progesteron

MENSTRUATION & MENSTRUAL CYCLE

1 LO1: Students should be able to describe what is menstruation

2 LO2: Relate menstruation with the menstrual cycle

3 LO3: State the hormones involve in the menstrual cycle

4 Assessment

MENSTRUATION & MENSTRUAL CYCLE

For more assessment, click

Match the hormones with the right functions:

Stimulate growth of follicle in the ovary

Promotes repair and growth of the endometrium lining

Causes ovulation to occur

High levels inhibit FSH secretion and induce the endometrium to thicken and vascularise

Progesterone

LH

FSH

Oestrogen

TIMES (DAY) IN THE OVARY IN THE UTERUS

1-5 Primary Follicle develop

6-13 Graafian Follicle matures

14 Endometrium Continues To Thickens

15-24 Corpus Luteum develops

25-28 Endometrium begins to breakdown

Menstruation occur

Corpus Luteum degenerates if no

fertilisation

Endometrium become thicker. Many blood vessel is develop

in it

Ovulation occurs

Endometrium repaires and thickens

Click on the image according to the arrangement of follicle development from day 1 to day 28 of menstrual cycle

FOLLICLEDEVELOPMENT

End of assessment