reproductive system

• what is a zygote?


  is a fertilized egg.
• what is fertilization?

  fertilization is when the egg cell and sperm fuse together
• give the definition of a gamete

  are reproductive cells or sex cells found in living organisms
• explain what reproduction is

  process in which sex cells are used to continue a species
• what are the female sex cells?

  the egg or ovum
• what are the male sex cells?

  sperm cells
• name the two types of reproduction

  sexual reproduction

  asexual reproduction
• what is sexual reproduction

  when there are two parents who reproduce by means of sexual intercourse
• what is asexual reproduction?

  a type of reproduction that only requires one parent that creates offspring that are genetrically identical to the parent
• what is fertilisation 


  fusion of the egg and the sperm
• what is puberty

  a stage in which sexual organs mature for reproduction
• Hormone that is responsible for puberty in males

  Testosterone
• Hormone that is responsible for puberty in females

  Oestrogen
• Function of menstrual system

  To prepare the uterus for implantation of a fertilised egg
• Function of female reproductive system

  Make egg cells

  Provide suitable conditions for the growth of a baby
• Function of male reproductive system

  Make and store sperm

  Place the sperm inside the female
• How long does the menstrual cycle last

  28 days
• Stages in the menstrual cycle

  Menstruation

  Ovulation

  Movement of the egg
• Methods of contraception

  Condom

  IUD

  Tieing of fallopian tubes

  Vasectomy

  Contraceptive pill
• Changes that happen to Females during puberty

  Breasts start to enlarge

  Pubic hair grows

  Menstruation starts

  Hips become wider

  Hair starts to grow on armpits
• Changes that happen to males during puberty

  Testes start to produce sperm

  Deepening of voice

  Penis enlarges

  Broadening of shoulders

  Body becomes muscular
• how long does menstruation last

  from 1 to day 7 of the menstrual cycle
• when does ovulation start

  day 7 to day 14
• name the structures of a sperm cell and explain


  THE HEAD - is used to penetrate the protective jelly layer of the egg cell and is where the DNA is found

  THE MIDDLE PIECE - is where mitochondria is found to give the sperm energy to swim.

  THE TAIL - is used to help the sperm swim