KA1 Gametes And Fertilisation

Question 1

Gamete production in the testes

Answer 1

The prostate gland and seminal vesicles secrete fluids that maintain the mobility and viability of the sperm.

Question 2

Semen

Answer 2

Contains sperm from the testes, and fluid secretions from the seminal vesicles and prostate gland

Question 3

Gamete production in the ovaries

Answer 3

Ovaries contain immature ova in various stages of development.
Each ovum is surrounded by a follicle that protects the developing ovum and secretes hormones.

Question 4

Oestrogen

Answer 4

Important for 1st half of cycle
Produced by:
Immature follicle
Follicle developing
Egg cell (ovum)
Follicular liquid

Question 5

Ovary

Answer 5

Site of ovum production
Produce progesterone

Question 6

Fertilisation

Answer 6

Mature ova are released into the oviduct where they may be fertilised by sperm to form a zygote

Question 7

Steps of fertilisation

Answer 7

1 egg released during ovulation day 0
2 fertilisation
3 as fertilised egg moves fallopian tube it divides day 1-4
4 pregnancy begins when fertilised egg implants in womb day 6-12
5 embryo