Reproduction In Humans

Question 1

What is the difference between sexual and asexual reproduction?

Answer 1

Asexual reproduction only requires one cell, which splits into 2 (mitosis)
Sexual reproduction requires two sex cells (gametes)

Question 2

What is fertilisation?

Answer 2

When a male gamete move to the female gamete and fuse together

Question 3

What is the function of oestrogen in the menstrual cycle?

Answer 3

Rebuilds the uterus lining
Inhibits FSH production
Stimulates LH production

Question 4

What is the function of progesterone in the menstrual cycle?

Answer 4

Maintains the uterus lining
Inhibits the release of FSH and LH

Question 5

What is the function of FSH in the menstrual cycle?

Answer 5

Stimulates ovary to release oestrogen
Stimulates the maturation of a follicle which contains an egg

Question 6

What is the function of LH in the menstrual cycle?

Answer 6

Stimulates follicle to burst and release the mature egg cell (ovulation)

Question 7

What is the embryo protected by during pregnancy?

Answer 7

Amniotic fluid protects the fetus from physical bumps and knocks during pregnancy

Question 8

What is the function of the placenta?

Answer 8

It’s a barrier between the mum and the baby
It’s important that blood doesn’t mix, potential different blood types
Also differences in blood pressure

Question 9

What diffuses into the fetus from the mum?

Answer 9

Glucose and oxygen

Question 10

What diffuses into the mum from the fetus?

Answer 10

Waste products
CO2, excess water and urea

Question 11

Function of the umbilical vein?

Answer 11

Going towards the baby
Full of oxygen and glucose
Some antibodies from mum, giving a short term immunity for disease

Question 12

What is the function of the umbilical artery?

Answer 12

Blood high in waste products (CO2, urea) and low in O2

Question 13

Which hormones initiate puberty in girls?

Answer 13

Oestrogen

Question 14

Which hormones initiate puberty in boys?

Answer 14

Testosterone

Question 15

What causes these hormones to be produced?

Answer 15

Biological need to reproduce, preparing body for sexual maturity
Pituitary glands plays a key role

Question 16

Male changes during puberty

Answer 16

Development of facial hair
Shoulder broaden
Sperm is produced
Voice breaks

Question 17

Female changes during puberty

Answer 17

Period start
Brest develop

Question 18

Changes in both male and female during puberty

Answer 18

Public hair grow
Hormones change
Reproductive organs develop
Hair under arms

Question 20

What is the adaptation of penis for its function?

Answer 20

Organ which passes semen and urine of the man’s body

Question 21

What is the adaptation of the bladder for its function?

Answer 21

Stores urine

Question 22

What is the adaptation of the sperm duct for its function?

Answer 22

Tube through which sperm travels on the way to the glands

Question 23

What is the adaptation of the urethra for its function? (Male)

Answer 23

The tube inside the penis that carries the urine or semen. A ring of muscles makes sure that there is no chance of urine and semen getting mixed up

Question 25

What is the adaptation of the glands for its function?

Answer 25

Produce fluids that provide the sperm with nutrients. This mixture of sperm and fluid is called semen

Question 26

What is the adaptation of testis for its function?

Answer 26

Organs which make the male gamete, sperm and also the hormone testosterone

Question 27

What is the adaptation of the foreskin for its function?

Answer 27

Skin that protects the end of the penis

Question 28

What is the adaptation of the scrotum for its function?

Answer 28

A bag of skin that holds the testis

Question 29

What is the adaptation of ovary for its function?

Answer 29

Produce the female gamete, the egg

Question 30

What is the adaptation of the oviduct for its function?

Answer 30

A tube lined with tiny hairs called cilia that connects the ovaries to the uterus

Question 31

What is the adaptation of the uterus for its function? (Female)

Answer 31

A muscular bag in which baby develops until birth

Question 32

What is the adaptation of the lining of the uterus for its function?

Answer 32

A part is the uterus is shed during a menstrual period

Question 33

What is the adaptation of the cervix for its function?

Answer 33

A ring of muscle at the neck of the uterus that closes the uterus until the baby is ready to be born

Question 34

What is the adaptation of the vagina for its function?

Answer 34

A muscular tube that leads from the cervix to the outside I’d the woman’s body. A man’s penis goes here during sexual intercourse

Question 35

What is the adaptation of the clitoris for its function?

Answer 35

The button showed bump above the urethra and vagina

Question 36

What is the adaptation of the urethra for its function? (Female)

Answer 36

The tube through which urine travels out of the body from the bladder

Question 37

What is the adaptation of the vulva for its function?

Answer 37

The whole area between a female legs. It includes the opening to the vagina, the opening of the urethra, the clitoris and the labia

Question 38

What is the adaptation of the labia for its function?

Answer 38

The fold of soft skin that cover the openings to the vagina and the urethra