Human Reproduction

Question 0

Asexual reproduction produces

Answer 0

Genetically identical offspring to parents
He number of chromosomes in the cell stay the same
Reproduction guaranteed

Question 1

Asexual reproduction (Martin smart)

Answer 1

One parent organism
No special sex cells
Involves mitosis

Question 2

Problems of asexual reproduction

Answer 2

Lack of genetic material means weakness to changing environments

Question 3

Sexual reproduction involves

Answer 3

The joining of two gametes produced by meiosis
Chromosome number halved when gametes produced
Two gametes from different parents

Question 4

Gametes

Answer 4

Specialised sex cells

Produced by meiosis

Question 5

Sexual reproduction produces

Answer 5

Genetic variety
Ovules - ova
Pollen -sperm

Question 6

Fertilisation

Answer 6

Sex cells fuse to form a zygote

Zygote undergoes cell division and develops into an embryo

Question 7

Pituitary hormones

Answer 7

Follicle stimulating hormone (FSH)
Lutcinising hormone (LH)

Question 8

Follicle stimulating hormone (FSH)

Answer 8

Stimulates ova in the follicles of the ovary to develop

Stimulates the ovary to make oestrogen

Question 9

Lutcinising hormone (LH)

Answer 9

Stimulates the release of a mature egg from the ovary

Stimulates the ovary to make progesterone

Question 10

Hormones from the ovaries

Answer 10

Oestrogen

Progesterone

Question 11

Oestrogen

Answer 11

Stimulates the lining of the uterus to build up
Reduces the levels of FSH produced by the pituitary
Pin creases the levels of LH

Question 12

Progesterone

Answer 12

Stimulates the growth of blood vessels in the uterus for pregnancy
Helps to keep pregnancy going

Question 13

FSH peak

Answer 13

Slight peak at 14/28

Question 14

LH peak

Answer 14

Massive peak at 14/28

Question 15

Oestrogen peak

Answer 15

Gradual built up massive peak 7-10

Question 16

Progesterone peak

Answer 16

Slight mound from 16-26

Question 17

Growth of follicle

Answer 17

0-14

Question 18

Ovulation

Answer 18

14

Question 19

Corpus luteum grows and breaks down

Answer 19

28/28

Question 20

Menstruation

Answer 20

5/28

Question 21

Growth of lining

Answer 21

17

Question 22

Menstruated cycle starts

Answer 22

Following puberty

Question 23

Menstrual cycle occurs

Answer 23

Once a month

Because of hormones

Question 24

Me struck cycle stops

Answer 24

``` When pregnant (starts again after birth of baby) After menopause ```

Question 25

Fertilisation

Answer 25

Sperm fertilises an ovum | A zygote is formed in the Fallopian tube

Question 26

Uterus

Answer 26

The developing uterus moves into here to develop | Implants itself into the uterus lining

Question 27

Placenta

Answer 27

``` Develops as the embryo does Gives food+oxygen to the foetus Takes urea+carbon dioxide Secretes progesterone Connected to foetus by umbilical chord ```

Question 28

Uterus contains

Answer 28

Amniotic fluid Membranes Sustains and protects the baby

Question 29

Pregnancy duration

Answer 29

40 weeks

Question 30

Week 12 of pregnancy

Answer 30

Some organs start to function | Bones start to harden

Question 31

Week 20 of pregnancy

Answer 31

Muscles are more developed | Foetus is more active

Question 32

Week 24 of pregnancy

Answer 32

Air sacs form in the lungs | Eyes are developed

Question 33

Week 36 of pregnancy

Answer 33

Nervous system developing rapidly | Lungs are nearly mature