human reproduction

Question 1

testes function

Answer 1

where sperm cells and testosterone are produced

Question 2

scrotum function

Answer 2

contains the testicles

Question 3

sperm ducts function

Answer 3

tubes that carry sperm from the testes to the urethra

Question 4

prostate gland function

Answer 4

secretes nutritive fluid that combines with sperm to form semen

Question 5

urethra function

Answer 5

tube which allows excretion of urine and semen from body

Question 6

ovaries function

Answer 6

develop egg cells

Question 7

oviducts function

Answer 7

connects ovaries to uterus and contain cilia to transport egg cells through tube. where fertilization occurs

Question 8

uterus function

Answer 8

where fetus develops

Question 9

cervix function

Answer 9

separates vagina from uterus and hold baby in place during pregnancy. made of muscular tissue

Question 10

vagina function

Answer 10

receives penis during intercourse.

Question 11

what is fertilisation

Answer 11

the fusion of the nuclei from a male gamete (sperm cell) and a female gamete (egg cell)

Question 12

what are the adaptive features of a sperm cell

Answer 12

• flagellum
• mitochondria
• enzymes in achrosome

Question 13

what are the adaptive features of egg cells

Answer 13

• energy stores
• jelly coat that changes after fertilisation

Question 14

explain the adaptive features of a sperm cell

Answer 14

-flagellum allows movement to egg cell
- many mitochondria to provide energy for movement
- enzymes in acrosome to digest through the jelly coat

Question 15

explain the adaptive features of an egg cell

Answer 15

• energy stores to provide nutrients during early development of zygote
• jelly coat changes at fertilisation to ensure that only one sperm cell can enter

Question 16

what does the zygote do in early development?

Answer 16

in early development, the zygote forms an embryo which is a cluster of cells that implants into the lining of the uterus

Question 17

umbilical cord function

Answer 17

allows the exchange of substances between the mother and the foetus through the cord

Question 18

placenta function

Answer 18

connects to the umbilical cord and allows the exchange of substances. also produces hormones such as progesterone and oestrogen

Question 19

amniotic sac function

Answer 19

surrounds the foetus and produces amniotic fluid

Question 20

amniotic fluid function

Answer 20

protects the foetus

Question 21

Describe the function of the placenta and umbilical cord in relation to the exchange of dissolved nutrients, gases and excretory products between the blood of the mother and the blood of the fetus

Answer 21

mother passes essential nutrients to foetus through umbilical cord (amino acids, oxygen, glucose) as well as antibodies to allow foetus to develop resistance against pathogens. waste products diffuse out of foetus to be excreted out of mothers body.

Question 22

is the foetus completely safe from disease?

Answer 22

no, as some pathogens and toxins can pass across the placenta and affect the foetus