Human Reproduction And Genetics Flashcards
The Fallopian tubes
Carry the egg to the uterus, fertilisation occurs here
Ovaries
Store and release eggs
The uterus (womb)
Is where the fertilised egg becomes implanted and finds nourishment
The Vagina
Holds the male penis during sexual inter rose, forms the birth canal during childbirth
Gametes
Is a sex cell
Male gamete
Sperm
Female gamete
Egg/ovum
Ovulation
An egg is released from the ovary an average of every 28 days
Fertile period
The days of the menstural cycle when a woman is most likely to become pregnant
Testes
Produce sperm
Sperm duct
Brings the sperm from the testis to the penis
Glands and vesicles
Produces seminal fluid which mixes with sperm to form semen
Penis
Enters the female and ejaculates semen
Puberty
When the body starts becoming sexually mature ( normally happens between the ages of 10 and 15 )
Puberty in males
Sex hormones ( testosterone ) are released causing the voice to deepen, hair grows around the sex organs, face, chest and underarms, the testes and penis grows bigger and start to produce sperm
Puberty in females
The sex hormones ( oestrogen and progesterone ) are released the breasts develop, hips widen, and hair begins to grow on the body
Copulation
Is another name name for sexual intercorse
Implantation
Occurs when the fertilised egg lodges itself on the lining of the uterus
Zygote
Egg and sperm fuse to form a single cell
Embryo
Division of the zygote occurs and growth which attaches to the lining of the uterus (implantation) grows more, and after 8 weeks looks like a human
Foetus
After 8 weeks looks like a human
Pregnancy
The average length of pregnancy is 40 weeks
Amniotic fluid
This fluid provides a cushion for the embryo, this bursts during the delivery of the baby “waters breaking”
Umbilical cord
A tube joining the embryo to the placenta