Reproduction

Terms related to human reproduction.
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Chromosomes
Located in the nucleus, they are made of DNA and protein, contain genetic information.
Gamete
Sex cells (e.g. egg or sperm)
Fertilization
When two gametes join together.
Zygote
The new cell formed after fertilization.
Hermaphrodite
An organism which produces both the male and female gametes.
Ova
Egg
Ovaries
Where the eggs are stored.
Oviducts
Fallopian tubes where the egg travels down to the uterus.
Uterus
A thick, walled organ made of muscle, where a baby can grow. Another word for it is womb.
Cervix
The neck of the womb that leads to the vagina.
Vagina
Muscular tube leading from the uterus to the outside.
Urethra
Opening of the bladder that leads to the front of the female genitals. Opens separately to the outside.
Rectum
Opening from the colon that is behind the vagina. Opens separately to the outside.
Spermatozoa
Male gametes also called sperm.
Testes
Where the sperm is made in males.
Scrotum
The two sacs of skin which hold the testes and are outside the body.
Vas Deferens
A tube which carries away sperm from the testes to join the urethra
Urethra (male)
Tube which carries urine and sperm from the penis. This happens at different times.
Prostrate Gland
A gland within the male reproductive system that is located just below the bladder.
Seminal Vesicles
It makes the fluid for sperm to swim in.
Follicle
It is a small space, filled with liquid, that surrounds the egg cell.
Graafian Follicle
The follicle grows bigger and moves to the edge of the ovary.
Ovulation
When the Graafian follicle bursts and the egg leaves the ovary.
Tubules
The tiny tubes where sperm are made. These are located in the testes.
Ejaculation
Process where sperm is pushed out of the penis by contracting the muscles along the penis.
Embryo
After fertilization occurs, the zygote divides to make a ball of cells that is called the embryo.
Implantation
When the embryo sinks into the thick, spongy lining of the uterus.
Placenta
It provides nutrients and oxygen from the mother to the baby through the umbilical cord.
Umbilical Cord
Joins the embryo (baby) to the placenta
Amnion
It is a fluid that surrounds the embryo to support and protect it.
Gestation Period
The length of time between fertilization and the birth.
Labor
When the muscle walls of the uterus contract.
Afterbirth
When the placenta rips away from the uterus wall and passes out through the vagina after the baby has been born.
Menstruation
When the lining of the uterus breaks up and slowly moves out the vagina. This process takes about 5 days and occurs every 28 days in females.