THE MENSTRUAL CYCLE AND PREGNANCY

Question 1

THE MENSTRUAL CYCLE INVOLVES THE BODY (…)

Answer 1

PREPARING THE UTERUS IN CASE IT RECEIVES A FERTILISED OVUM

Question 2

THE MENSTRUAL CYCLE HAVE (…) STAGES

Answer 2

4

Question 3

WHAT IS THE STAGE ONE OF THE MENSTRUAL CYCLE

Answer 3

IN DAY ONE THE MENSTRUAL CYCLE STARTS, THE UTERUS LINING B REAKS DOWN FOR ABOUT FOUR DAYS

Question 4

WHAT IS THE STAGE TWO OF THE MENSTRUAL CYCLE

Answer 4

THE UTERUS LINING BUILDS UP AGAIN, FROM DAY 4 TO DAY 14 INTO A THICK SPONGY LAYER FULL OF BLOOD VESSELS, READY TO RECIEVE A FERTILISED EGG

Question 5

WHAT IS THE STAGE THREE OF THE MENSTRUAL CYCLE

Answer 5

AN EGG DEVELOPS AND IS RELEASED FROM THE OVARY AT DAY 14 (THIS IS CALLED OVULATION)

Question 6

WHAT IS THE STAGE FOUR OF THE MENSTRUAL CYCLE

Answer 6

THE WALL IS THEN MAINTAINED FOR ABOUT 14 DAYS UNTIL DAY 28, IF NO FERTILISED EGG HAS LANDED ON THE UTERUS WALL BY DAY 28, THE SPONGY LINING STARTS TO BREAK DOWN AND THE WHOLE CYCLE STARTS AGAIN

Question 7

THE MENSTRUAL CYCLE IS CONTROLED BY (…)

Answer 7

FOUR HORMONES

Question 8

WHAT DOES THE FSH (FOLLICLE-STIMULATING HORMONE) DOES

Answer 8

1) PRODUCED IN THE PITUITARY GLAND
2) CAUSES AN EGG TO MATURE IN ONE OF THE OVARIES IN A STRUCTURE CALLED FOLLICLE
3) STRIMULATES THE OVARY TO PRODUCE OESTROGEN
4) OESTROGEN THEN INHIBITS THE RELEASE OF FSH

Question 9

WHAT DOES THE OESTROGEN HORMONE DO

Answer 9

1) PRODUCED IN THE OVARIES
2) CAUSES LINING OF THE UTERUS TO GROW
3) STIMULATES THE RELEASE OF LH (WHICH CAUSES THE RELEASE OF AN EGG)

Question 10

WHAT DOES THE LH (LUTEINISING HORMONE) DOES

Answer 10

1) PRODUCED BY THE PITUITARY GLAND
2) STIMULATES THE RELEASE OF AN EGG AT DAY 14 (OVULATION)

Question 11

WHAT DOES THE PROGESTERONE HORMONE DOES

Answer 11

1) PRODUCED IN THE OVARIES BY THE REMAINS OF THE FOLLICLE AFTER OVULATION
2) MAINTAINS THE LINING OF THE UTERUS DURING THE SECOND HALF OF THE CYCLE, WHEN THE LEVEL OF PROGESTERONE FALLS THE LINING BREAKS DOWN
3) INHIBITS THE RELEASE OF LH AND FSH

Question 12

THE EMBRYO DEVELOPS DURING (…)

Answer 12

PREGNANCY

Question 13

ONCE AN OVUYM HAS BEEN FERTELISED, IKT DEVELMOPS INTO AN (…)

Answer 13

EMBRYO AND IMPLANTS IN THE UTERUS

Question 14

WHEN THE EMBRYO STARTS TO LOOK HUMAN IS CALLED A (…)

Answer 14

FETUS

Question 15

ONCE THE EMBRYO HAS IMPLANTED, THE PLACENTA DEVELOPS THIS LETS THE (…)

Answer 15

BLOOD OF THE EMBRYO AND MOTHER GET VERY CLOSE TO ALLOW THE EXCHANGE OF FOOD, OXYGEN AND WASTE

Question 16

WHEN THE AMMONIOM MEMBRANE FORMS, IT SURROUNDS THE EMBRYO AND IT MAKES IT FULL OF (…)

Answer 16

AMNIOTIC FLUID

Question 17

AMNIOTIC FLUID PROTECTS THE EMBRYO AGAINST (…)

Answer 17

KNOCKS AND BUMPS