Biology Flashcards
Ovaries
Store and release eggs
Fallopian Tubes
The Fallopian tubes carry the egg to the uterus, fertilisation occurs here
Uterus
The uterus (womb) is where the fertilised egg becomes implanted and finds nourishment
Cervix
The cervix leads the vagina to the uterus
Vagina
The vagina holds the male penis during sexual inter course
Ovulation
An egg is released from the ovary approximately every 28 days
Menstruation
The uterus becomes thicker and rich in blood vessels to be ready to receive the egg, if the egg is not fertilised by a sperm the thickened uterus lining is not needed and breaks away. The lining and a small amount of blood pass out through the vagina
The Fertile Period
These are the days of the menstrual cycle when the woman is most likely to become pregnant, intercourse 2 or 3 days before, during or after ovulation could lead to fertilisation because sperm cells can survive for this long
Menopause
Signals the end of a females ability to reproduce and also the end of her menstrual cycle. It happens at different ages for different people, typically in the late 40s to early 50s.
Testes
The testes produce sperm
Scrotum
The scrotum is where the testes are, it is located outside the body to ensure the temperature is lower than body temperature for healthy sperm
Epididymis
The epididymis is a coiled tube on the outside of each testis that stores sperm and allows them to mature fully
Vas déférents
The vas déférées (sperm duct) brings the sperm from the testes to the penis
Seminal vesicles, prostate gland and Cowper’s gland
The seminal vesicles, prostate gland and Cowper’s gland produce seminal fluid which mixes with sperm to form semen, It nourishes the sperm and allow them to swim
Penis
The penis enters the female and ejaculates semen
Puberty
Puberty describes when the body starts becoming sexually mature( reproductive organs develop). It normally happens between the ages of 10 and 16
Male puberty
Male 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 grow bigger and start to produce sperm
Female puberty
In females when the sex hormones (oestrogen and progesterone) are released the breasts develop, hips widen, and hair begins to grow on the body
Fertilisation
If an egg is present in the Fallopian tube, and a couple have sexual intercourse, then one of the sperm cells may fuse with it
Embryo
The fertilised egg then divides a number of times and the tiny group of cells moves down the Fallopian tubes to the uterus
Zygote->Embryo->Foetus->
Egg and sperm fuse to form a single
->zygote
Cell division occurs and growth
->Embryo, which attachaches to the lining of
Pregnancy
The average
Umbilical cord
A tube called the umbilical cord joins the embryo to the placenta
Placenta
Where the food and oxygen from the mother joins the baby
