Human reproduction

• Fertilisation involves the fusion of a male and female gamete to produce a zygote that undergoes cell division and develops into an embryo
• How the structure of the male reproductive systems are adapted for their functions
• How the glands are adapted/function


  Produces liquid which contains nutriente for the sperm to make semen/
• How the testes are adapted/function


  Sperm are produced here
• How the foreskin is adapted/function


  A layer of skin that covers/protects the penis
• How the scrotum is adapted/function


  Sack of skin which contains the testes
• How the urethra is adapted/function (M)


  Tube that both urine and semen leave the body through the penis
• How the penis is adapted/function


  To put the sperm in the vagina
• How the sperm duct is adapted/function


  Tube the sperm travels through when they eat the testes
• The bladder is NOT apart of the male reproductive system
• How the structure of the female reproductive systems are adapted for their functions
• How the bladder is adapted/functions

  A 'sack' that holds urine that holds urine (not part of the female reproductive system).
• How the ovary is adapted/functions


  Where the egg is released, produced hormones (mainly oestrogen).
• How the vagina is adapted/functions


  Receives the sperm.
• How the uterus is adapted/functions


  This is where the fertilisation egg implants and the baby develops.
• How Fallopian tubes are adapted/functions


  Carries the egg to the uterus. It is the site of fertilistaion.
• How the urethra is adapted/functions


  a tube through which urine leaves the body (not part of the female reproductive system).
• How the cervix is adapted/functions


  A ring of muscles, holds the baby in place.
• The role of oestrogen in the menstrual cycle


  To cause the uterus lining to developed and stimulate the release of LH (secreted by the ovary)
• Role of progesterone in the menstrual cycle


  To maintain the uterus lining and to inhibit the release of LH (secreted by the empty egg follicle in ovary)
• Role of placenta in the nutrition of the developing embryo


  Substances may pass from the mothers blood to the babys blood by diffusion. These substances include oxygen, glucose, antibodies, drugs, alcohol, carbon dioxide, urea.
• How the developing embryo is protected by amniotic fluid


  It protects the embryo against knocks and bumps
• The role of oestrogen in the development of secondary sexual characteristics

  The primary function of estrogens is development of female secondary sexual characteristics, including...

  -extra hair on underarms and pubic area

  -hips to widen

  -development of breasts

  -ovum release and start of periods
• The role of testosterone in the development of secondary sexual characteristics

  It triggers he secondary sexual characteristics including...

  -extra hair on face and body

  -muscles to develop

  -penis and testicles to enlarge

  -sperm production

  -deepening of voice